1 /* Copyright (C) 1991,92,93,94,95,96,97,98 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
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 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If not,
16 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
20 #define _NETINET_IN_H 1
25 #include <sys/types.h>
26 #include <bits/socket.h>
31 /* Standard well-defined IP protocols. */
34 IPPROTO_IP = 0, /* Dummy protocol for TCP. */
35 IPPROTO_HOPOPTS = 0, /* IPv6 Hop-by-Hop options. */
36 IPPROTO_ICMP = 1, /* Internet Control Message Protocol. */
37 IPPROTO_IGMP = 2, /* Internet Group Management Protocol. */
38 IPPROTO_IPIP = 4, /* IPIP tunnels (older KA9Q tunnels use 94). */
39 IPPROTO_TCP = 6, /* Transmission Control Protocol. */
40 IPPROTO_EGP = 8, /* Exterior Gateway Protocol. */
41 IPPROTO_PUP = 12, /* PUP protocol. */
42 IPPROTO_UDP = 17, /* User Datagram Protocol. */
43 IPPROTO_IDP = 22, /* XNS IDP protocol. */
44 IPPROTO_TP = 29, /* SO Transport Protocol Class 4. */
45 IPPROTO_IPV6 = 41, /* IPv6 header. */
46 IPPROTO_ROUTING = 43, /* IPv6 routing header. */
47 IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header. */
48 IPPROTO_RSVP = 46, /* Reservation Protocol. */
49 IPPROTO_GRE = 47, /* General Routing Encapsulation. */
50 IPPROTO_ESP = 50, /* encapsulating security payload. */
51 IPPROTO_AH = 51, /* authentication header. */
52 IPPROTO_ICMPV6 = 58, /* ICMPv6. */
53 IPPROTO_NONE = 59, /* IPv6 no next header. */
54 IPPROTO_DSTOPTS = 60, /* IPv6 destination options. */
55 IPPROTO_MTP = 92, /* Multicast Transport Protocol. */
56 IPPROTO_ENCAP = 98, /* Encapsulation Header. */
57 IPPROTO_PIM = 103, /* Protocol Independent Multicast. */
58 IPPROTO_RAW = 255, /* Raw IP packets. */
62 /* Standard well-known ports. */
65 IPPORT_ECHO = 7, /* Echo service. */
66 IPPORT_DISCARD = 9, /* Discard transmissions service. */
67 IPPORT_SYSTAT = 11, /* System status service. */
68 IPPORT_DAYTIME = 13, /* Time of day service. */
69 IPPORT_NETSTAT = 15, /* Network status service. */
70 IPPORT_FTP = 21, /* File Transfer Protocol. */
71 IPPORT_TELNET = 23, /* Telnet protocol. */
72 IPPORT_SMTP = 25, /* Simple Mail Transfer Protocol. */
73 IPPORT_TIMESERVER = 37, /* Timeserver service. */
74 IPPORT_NAMESERVER = 42, /* Domain Name Service. */
75 IPPORT_WHOIS = 43, /* Internet Whois service. */
78 IPPORT_TFTP = 69, /* Trivial File Transfer Protocol. */
80 IPPORT_FINGER = 79, /* Finger service. */
82 IPPORT_SUPDUP = 95, /* SUPDUP protocol. */
85 IPPORT_EXECSERVER = 512, /* execd service. */
86 IPPORT_LOGINSERVER = 513, /* rlogind service. */
87 IPPORT_CMDSERVER = 514,
88 IPPORT_EFSSERVER = 520,
92 IPPORT_WHOSERVER = 513,
93 IPPORT_ROUTESERVER = 520,
95 /* Ports less than this value are reserved for privileged processes. */
96 IPPORT_RESERVED = 1024,
98 /* Ports greater this value are reserved for (non-privileged) servers. */
99 IPPORT_USERRESERVED = 5000
103 /* Internet address. */
110 /* Definitions of the bits in an Internet address integer.
112 On subnets, host and network parts are found according to
113 the subnet mask, not these masks. */
115 #define IN_CLASSA(a) ((((uint32_t) (a)) & 0x80000000) == 0)
116 #define IN_CLASSA_NET 0xff000000
117 #define IN_CLASSA_NSHIFT 24
118 #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
119 #define IN_CLASSA_MAX 128
121 #define IN_CLASSB(a) ((((uint32_t) (a)) & 0xc0000000) == 0x80000000)
122 #define IN_CLASSB_NET 0xffff0000
123 #define IN_CLASSB_NSHIFT 16
124 #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
125 #define IN_CLASSB_MAX 65536
127 #define IN_CLASSC(a) ((((uint32_t) (a)) & 0xe0000000) == 0xc0000000)
128 #define IN_CLASSC_NET 0xffffff00
129 #define IN_CLASSC_NSHIFT 8
130 #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
132 #define IN_CLASSD(a) ((((uint32_t) (a)) & 0xf0000000) == 0xe0000000)
133 #define IN_MULTICAST(a) IN_CLASSD(a)
135 #define IN_EXPERIMENTAL(a) ((((uint32_t) (a)) & 0xe0000000) == 0xe0000000)
136 #define IN_BADCLASS(a) ((((uint32_t) (a)) & 0xf0000000) == 0xf0000000)
138 /* Address to accept any incoming messages. */
139 #define INADDR_ANY ((uint32_t) 0x00000000)
140 /* Address to send to all hosts. */
141 #define INADDR_BROADCAST ((uint32_t) 0xffffffff)
142 /* Address indicating an error return. */
143 #define INADDR_NONE ((uint32_t) 0xffffffff)
145 /* Network number for local host loopback. */
146 #define IN_LOOPBACKNET 127
147 /* Address to loopback in software to local host. */
148 #ifndef INADDR_LOOPBACK
149 # define INADDR_LOOPBACK ((uint32_t) 0x7f000001) /* Inet 127.0.0.1. */
152 /* Defines for Multicast INADDR. */
153 #define INADDR_UNSPEC_GROUP ((uint32_t) 0xe0000000) /* 224.0.0.0 */
154 #define INADDR_ALLHOSTS_GROUP ((uint32_t) 0xe0000001) /* 224.0.0.1 */
155 #define INADDR_ALLRTRS_GROUP ((uint32_t) 0xe0000002) /* 224.0.0.2 */
156 #define INADDR_MAX_LOCAL_GROUP ((uint32_t) 0xe00000ff) /* 224.0.0.255 */
164 uint8_t u6_addr8[16];
165 uint16_t u6_addr16[8];
166 uint32_t u6_addr32[4];
167 #if (~0UL) > 0xffffffff
168 uint64_t u6_addr64[2];
171 #define s6_addr in6_u.u6_addr8
172 #define s6_addr16 in6_u.u6_addr16
173 #define s6_addr32 in6_u.u6_addr32
174 #define s6_addr64 in6_u.u6_addr64
177 extern const struct in6_addr in6addr_any; /* :: */
178 extern const struct in6_addr in6addr_loopback; /* ::1 */
179 #define IN6ADDR_ANY_INIT { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }
180 #define IN6ADDR_LOOPBACK_INIT { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }
182 #define INET_ADDRSTRLEN 16
183 #define INET6_ADDRSTRLEN 46
185 /* Get the definition of the macro to define the common sockaddr members. */
186 #include <bits/sockaddr.h>
189 /* Structure describing an Internet socket address. */
192 __SOCKADDR_COMMON (sin_);
193 uint16_t sin_port; /* Port number. */
194 struct in_addr sin_addr; /* Internet address. */
196 /* Pad to size of `struct sockaddr'. */
197 unsigned char sin_zero[sizeof (struct sockaddr) -
198 __SOCKADDR_COMMON_SIZE -
200 sizeof (struct in_addr)];
203 /* Ditto, for IPv6. */
206 __SOCKADDR_COMMON (sin6_);
207 uint16_t sin6_port; /* Transport layer port # */
208 uint32_t sin6_flowinfo; /* IPv6 flow information */
209 struct in6_addr sin6_addr; /* IPv6 address */
212 /* IPv6 multicast request. */
215 /* IPv6 multicast address of group */
216 struct in6_addr ipv6mr_multiaddr;
218 /* local interface */
219 unsigned int ipv6mr_ifindex;
222 /* Get system-specific definitions. */
225 /* Functions to convert between host and network byte order.
227 Please note that these functions normally take `unsigned long int' or
228 `unsigned short int' values as arguments and also return them. But
229 this was a short-sighted decision since on different systems the types
230 may have different representations but the values are always the same. */
232 extern uint32_t ntohl __P ((uint32_t __netlong));
233 extern uint16_t ntohs __P ((uint16_t __netshort));
234 extern uint32_t htonl __P ((uint32_t __hostlong));
235 extern uint16_t htons __P ((uint16_t __hostshort));
239 /* Get machine dependent optimized versions of byte swapping functions. */
240 #include <bits/byteswap.h>
242 #if __BYTE_ORDER == __BIG_ENDIAN && defined __OPTIMIZE__
243 /* The host byte order is the same as network byte order,
244 so these functions are all just identity. */
245 # define ntohl(x) (x)
246 # define ntohs(x) (x)
247 # define htonl(x) (x)
248 # define htons(x) (x)
250 # if __BYTE_ORDER == __LITTLE_ENDIAN && defined __OPTIMIZE__
251 # define ntohl(x) __bswap_32 (x)
252 # define ntohs(x) __bswap_16 (x)
253 # define htonl(x) __bswap_32 (x)
254 # define htons(x) __bswap_16 (x)
258 #define IN6_IS_ADDR_UNSPECIFIED(a) \
259 (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
260 ((uint32_t *) (a))[2] == 0 && ((uint32_t *) (a))[3] == 0)
262 #define IN6_IS_ADDR_LOOPBACK(a) \
263 (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
264 ((uint32_t *) (a))[2] == 0 && ((uint32_t *) (a))[3] == htonl (1))
266 #define IN6_IS_ADDR_MULTICAST(a) (((u_int8_t *) (a))[0] == 0xff)
268 #define IN6_IS_ADDR_LINKLOCAL(a) \
269 ((((uint32_t *) (a))[0] & htonl (0xffc00000)) == htonl (0xfe800000))
271 #define IN6_IS_ADDR_SITELOCAL(a) \
272 ((((uint32_t *) (a))[0] & htonl (0xffc00000)) == htonl (0xfec00000))
274 #define IN6_IS_ADDR_V4MAPPED(a) \
275 ((((uint32_t *) (a))[0] == 0) && (((uint32_t *) (a))[1] == 0) && \
276 (((uint32_t *) (a))[2] == htonl (0xffff)))
278 #define IN6_IS_ADDR_V4COMPAT(a) \
279 ((((uint32_t *) (a))[0] == 0) && (((uint32_t *) (a))[1] == 0) && \
280 (((uint32_t *) (a))[2] == 0) && (ntohl (((uint32_t *) (a))[3]) > 1))
282 #define IN6_ARE_ADDR_EQUAL(a,b) \
283 ((((uint32_t *) (a))[0] == ((uint32_t *) (b))[0]) && \
284 (((uint32_t *) (a))[1] == ((uint32_t *) (b))[2]) && \
285 (((uint32_t *) (a))[2] == ((uint32_t *) (b))[1]) && \
286 (((uint32_t *) (a))[3] == ((uint32_t *) (b))[3]))
288 /* Bind socket to a privileged IP port. */
289 extern int bindresvport __P ((int __sockfd, struct sockaddr_in *__sock_in));
293 #define IN6_IS_ADDR_MC_NODELOCAL(a) \
294 (IN6_IS_ADDR_MULTICAST(a) && ((((u_int8_t *) (a))[1] & 0xf) == 0x1))
296 #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
297 (IN6_IS_ADDR_MULTICAST(a) && ((((u_int8_t *) (a))[1] & 0xf) == 0x2))
299 #define IN6_IS_ADDR_MC_SITELOCAL(a) \
300 (IN6_IS_ADDR_MULTICAST(a) && ((((u_int8_t *) (a))[1] & 0xf) == 0x5))
302 #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
303 (IN6_IS_ADDR_MULTICAST(a) && ((((u_int8_t *) (a))[1] & 0xf) == 0x8))
305 #define IN6_IS_ADDR_MC_GLOBAL(a) \
306 (IN6_IS_ADDR_MULTICAST(a) && ((((u_int8_t *) (a))[1] & 0xf) == 0xe))
308 /* IPv6 packet information. */
311 struct in6_addr ipi6_addr; /* src/dst IPv6 address */
312 unsigned int ipi6_ifindex; /* send/recv interface index */
317 #endif /* netinet/in.h */