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.
3:
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.
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: Library General Public License for more details.
13:
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. */
18:
19: #ifndef _NETINET_IN_H
20: #define _NETINET_IN_H 1
21:
22: #include <features.h>
23: #include <stdint.h>
24:
25: #include <sys/types.h>
26: #include <bits/socket.h>
27:
28:
29: __BEGIN_DECLS
30:
31: /* Standard well-defined IP protocols. */
32: enum
33: {
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_IPV6 = 41, /* IPv6 header. */
45: IPPROTO_ROUTING = 43, /* IPv6 routing header. */
46: IPPROTO_FRAGMENT = 44, /* IPv6 fragmentation header. */
47: IPPROTO_RSVP = 46, /* RSVP Protocol. */
48: IPPROTO_GRE = 47, /* Cisco tunneling protocol. */
49: IPPROTO_ESP = 50, /* encapsulating security payload. */
50: IPPROTO_AH = 51, /* authentication header. */
51: IPPROTO_ICMPV6 = 58, /* ICMPv6. */
52: IPPROTO_NONE = 59, /* IPv6 no next header. */
53: IPPROTO_DSTOPTS = 60, /* IPv6 destination options. */
54: IPPROTO_PIM = 103, /* Protocol Independent Multicast. */
55: IPPROTO_RAW = 255, /* Raw IP packets. */
56: IPPROTO_MAX
57: };
58:
59: /* Standard well-known ports. */
60: enum
61: {
62: IPPORT_ECHO = 7, /* Echo service. */
63: IPPORT_DISCARD = 9, /* Discard transmissions service. */
64: IPPORT_SYSTAT = 11, /* System status service. */
65: IPPORT_DAYTIME = 13, /* Time of day service. */
66: IPPORT_NETSTAT = 15, /* Network status service. */
67: IPPORT_FTP = 21, /* File Transfer Protocol. */
68: IPPORT_TELNET = 23, /* Telnet protocol. */
69: IPPORT_SMTP = 25, /* Simple Mail Transfer Protocol. */
70: IPPORT_TIMESERVER = 37, /* Timeserver service. */
71: IPPORT_NAMESERVER = 42, /* Domain Name Service. */
72: IPPORT_WHOIS = 43, /* Internet Whois service. */
73: IPPORT_MTP = 57,
74:
75: IPPORT_TFTP = 69, /* Trivial File Transfer Protocol. */
76: IPPORT_RJE = 77,
77: IPPORT_FINGER = 79, /* Finger service. */
78: IPPORT_TTYLINK = 87,
79: IPPORT_SUPDUP = 95, /* SUPDUP protocol. */
80:
81:
82: IPPORT_EXECSERVER = 512, /* execd service. */
83: IPPORT_LOGINSERVER = 513, /* rlogind service. */
84: IPPORT_CMDSERVER = 514,
85: IPPORT_EFSSERVER = 520,
86:
87: /* UDP ports. */
88: IPPORT_BIFFUDP = 512,
89: IPPORT_WHOSERVER = 513,
90: IPPORT_ROUTESERVER = 520,
91:
92: /* Ports less than this value are reserved for privileged processes. */
93: IPPORT_RESERVED = 1024,
94:
95: /* Ports greater this value are reserved for (non-privileged) servers. */
96: IPPORT_USERRESERVED = 5000
97: };
98:
99:
100: /* Internet address. */
101: struct in_addr
102: {
103: uint32_t s_addr;
104: };
105:
106:
107: /* Definitions of the bits in an Internet address integer.
108:
109: On subnets, host and network parts are found according to
110: the subnet mask, not these masks. */
111:
112: #define IN_CLASSA(a) ((((uint32_t) (a)) & 0x80000000) == 0)
113: #define IN_CLASSA_NET 0xff000000
114: #define IN_CLASSA_NSHIFT 24
115: #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
116: #define IN_CLASSA_MAX 128
117:
118: #define IN_CLASSB(a) ((((uint32_t) (a)) & 0xc0000000) == 0x80000000)
119: #define IN_CLASSB_NET 0xffff0000
120: #define IN_CLASSB_NSHIFT 16
121: #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
122: #define IN_CLASSB_MAX 65536
123:
124: #define IN_CLASSC(a) ((((uint32_t) (a)) & 0xe0000000) == 0xc0000000)
125: #define IN_CLASSC_NET 0xffffff00
126: #define IN_CLASSC_NSHIFT 8
127: #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
128:
129: #define IN_CLASSD(a) ((((uint32_t) (a)) & 0xf0000000) == 0xe0000000)
130: #define IN_MULTICAST(a) IN_CLASSD(a)
131:
132: #define IN_EXPERIMENTAL(a) ((((uint32_t) (a)) & 0xe0000000) == 0xe0000000)
133: #define IN_BADCLASS(a) ((((uint32_t) (a)) & 0xf0000000) == 0xf0000000)
134:
135: /* Address to accept any incoming messages. */
136: #define INADDR_ANY ((uint32_t) 0x00000000)
137: /* Address to send to all hosts. */
138: #define INADDR_BROADCAST ((uint32_t) 0xffffffff)
139: /* Address indicating an error return. */
140: #define INADDR_NONE ((uint32_t) 0xffffffff)
141:
142: /* Network number for local host loopback. */
143: #define IN_LOOPBACKNET 127
144: /* Address to loopback in software to local host. */
145: #ifndef INADDR_LOOPBACK
146: # define INADDR_LOOPBACK ((uint32_t) 0x7f000001) /* Inet 127.0.0.1. */
147: #endif
148:
149: /* Defines for Multicast INADDR. */
150: #define INADDR_UNSPEC_GROUP ((uint32_t) 0xe0000000) /* 224.0.0.0 */
151: #define INADDR_ALLHOSTS_GROUP ((uint32_t) 0xe0000001) /* 224.0.0.1 */
152: #define INADDR_ALLRTRS_GROUP ((uint32_t) 0xe0000002) /* 224.0.0.2 */
153: #define INADDR_MAX_LOCAL_GROUP ((uint32_t) 0xe00000ff) /* 224.0.0.255 */
154:
155:
156: /* IPv6 address */
157: struct in6_addr
158: {
159: union
160: {
161: uint8_t u6_addr8[16];
162: uint16_t u6_addr16[8];
163: uint32_t u6_addr32[4];
164: #if (~0UL) > 0xffffffff
165: uint64_t u6_addr64[2];
166: #endif
167: } in6_u;
168: #define s6_addr in6_u.u6_addr8
169: #define s6_addr16 in6_u.u6_addr16
170: #define s6_addr32 in6_u.u6_addr32
171: #define s6_addr64 in6_u.u6_addr64
172: };
173:
174: extern const struct in6_addr in6addr_any; /* :: */
175: extern const struct in6_addr in6addr_loopback; /* ::1 */
176: #define IN6ADDR_ANY_INIT { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }
177: #define IN6ADDR_LOOPBACK_INIT { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }
178:
179: #define INET_ADDRSTRLEN 16
180: #define INET6_ADDRSTRLEN 46
181:
182: /* Get the definition of the macro to define the common sockaddr members. */
183: #include <bits/sockaddr.h>
184:
185:
186: /* Structure describing an Internet socket address. */
187: struct sockaddr_in
188: {
189: __SOCKADDR_COMMON (sin_);
190: uint16_t sin_port; /* Port number. */
191: struct in_addr sin_addr; /* Internet address. */
192:
193: /* Pad to size of `struct sockaddr'. */
194: unsigned char sin_zero[sizeof (struct sockaddr) -
195: __SOCKADDR_COMMON_SIZE -
196: sizeof (uint16_t) -
197: sizeof (struct in_addr)];
198: };
199:
200: /* Ditto, for IPv6. */
201: struct sockaddr_in6
202: {
203: __SOCKADDR_COMMON (sin6_);
204: uint16_t sin6_port; /* Transport layer port # */
205: uint32_t sin6_flowinfo; /* IPv6 flow information */
206: struct in6_addr sin6_addr; /* IPv6 address */
207: };
208:
209: /* IPv6 multicast request. */
210: struct ipv6_mreq
211: {
212: /* IPv6 multicast address of group */
213: struct in6_addr ipv6mr_multiaddr;
214:
215: /* local interface */
216: unsigned int ipv6mr_ifindex;
217: };
218:
219: /* Get system-specific definitions. */
220: #include <bits/in.h>
221:
222: /* Functions to convert between host and network byte order.
223:
224: Please note that these functions normally take `unsigned long int' or
225: `unsigned short int' values as arguments and also return them. But
226: this was a short-sighted decision since on different systems the types
227: may have different representations but the values are always the same. */
228:
229: extern uint32_t ntohl __P ((uint32_t __netlong));
230: extern uint16_t ntohs __P ((uint16_t __netshort));
231: extern uint32_t htonl __P ((uint32_t __hostlong));
232: extern uint16_t htons __P ((uint16_t __hostshort));
233:
234: #include <endian.h>
235:
236: /* Get machine dependent optimized versions of byte swapping functions. */
237: #include <bits/byteswap.h>
238:
239: #if __BYTE_ORDER == __BIG_ENDIAN && defined __OPTIMIZE__
240: /* The host byte order is the same as network byte order,
241: so these functions are all just identity. */
242: # define ntohl(x) (x)
243: # define ntohs(x) (x)
244: # define htonl(x) (x)
245: # define htons(x) (x)
246: #else
247: # if __BYTE_ORDER == __LITTLE_ENDIAN && defined __OPTIMIZE__
248: # define ntohl(x) __bswap_32 (x)
249: # define ntohs(x) __bswap_16 (x)
250: # define htonl(x) __bswap_32 (x)
251: # define htons(x) __bswap_16 (x)
252: # endif
253: #endif
254:
255: #define IN6_IS_ADDR_UNSPECIFIED(a) \
256: (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
257: ((uint32_t *) (a))[2] == 0 && ((uint32_t *) (a))[3] == 0)
258:
259: #define IN6_IS_ADDR_LOOPBACK(a) \
260: (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
261: ((uint32_t *) (a))[2] == 0 && ((uint32_t *) (a))[3] == htonl (1))
262:
263: #define IN6_IS_ADDR_MULTICAST(a) (((u_int8_t *) (a))[0] == 0xff)
264:
265: #define IN6_IS_ADDR_LINKLOCAL(a) \
266: ((((uint32_t *) (a))[0] & htonl (0xffc00000)) == htonl (0xfe800000))
267:
268: #define IN6_IS_ADDR_SITELOCAL(a) \
269: ((((uint32_t *) (a))[0] & htonl (0xffc00000)) == htonl (0xfec00000))
270:
271: #define IN6_IS_ADDR_V4MAPPED(a) \
272: ((((uint32_t *) (a))[0] == 0) && (((uint32_t *) (a))[1] == 0) && \
273: (((uint32_t *) (a))[2] == htonl (0xffff)))
274:
275: #define IN6_IS_ADDR_V4COMPAT(a) \
276: ((((uint32_t *) (a))[0] == 0) && (((uint32_t *) (a))[1] == 0) && \
277: (((uint32_t *) (a))[2] == 0) && (ntohl (((uint32_t *) (a))[3]) > 1))
278:
279: #define IN6_ARE_ADDR_EQUAL(a,b) \
280: ((((uint32_t *) (a))[0] == ((uint32_t *) (b))[0]) && \
281: (((uint32_t *) (a))[1] == ((uint32_t *) (b))[2]) && \
282: (((uint32_t *) (a))[2] == ((uint32_t *) (b))[1]) && \
283: (((uint32_t *) (a))[3] == ((uint32_t *) (b))[3]))
284:
285: /* Bind socket to a privileged IP port. */
286: extern int bindresvport __P ((int __sockfd, struct sockaddr_in *__sock_in));
287:
288:
289:
290: #define IN6_IS_ADDR_MC_NODELOCAL(a) \
291: (IN6_IS_ADDR_MULTICAST(a) && ((((u_int8_t *) (a))[1] & 0xf) == 0x1))
292:
293: #define IN6_IS_ADDR_MC_LINKLOCAL(a) \
294: (IN6_IS_ADDR_MULTICAST(a) && ((((u_int8_t *) (a))[1] & 0xf) == 0x2))
295:
296: #define IN6_IS_ADDR_MC_SITELOCAL(a) \
297: (IN6_IS_ADDR_MULTICAST(a) && ((((u_int8_t *) (a))[1] & 0xf) == 0x5))
298:
299: #define IN6_IS_ADDR_MC_ORGLOCAL(a) \
300: (IN6_IS_ADDR_MULTICAST(a) && ((((u_int8_t *) (a))[1] & 0xf) == 0x8))
301:
302: #define IN6_IS_ADDR_MC_GLOBAL(a) \
303: (IN6_IS_ADDR_MULTICAST(a) && ((((u_int8_t *) (a))[1] & 0xf) == 0xe))
304:
305: /* IPv6 packet information. */
306: struct in6_pktinfo
307: {
308: struct in6_addr ipi6_addr; /* src/dst IPv6 address */
309: unsigned int ipi6_ifindex; /* send/recv interface index */
310: };
311:
312: __END_DECLS
313:
314: #endif /* netinet/in.h */
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