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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
26: /*
27: * Copyright (c) 1982, 1986, 1990, 1993
28: * The Regents of the University of California. All rights reserved.
29: *
30: * Redistribution and use in source and binary forms, with or without
31: * modification, are permitted provided that the following conditions
32: * are met:
33: * 1. Redistributions of source code must retain the above copyright
34: * notice, this list of conditions and the following disclaimer.
35: * 2. Redistributions in binary form must reproduce the above copyright
36: * notice, this list of conditions and the following disclaimer in the
37: * documentation and/or other materials provided with the distribution.
38: * 3. All advertising materials mentioning features or use of this software
39: * must display the following acknowledgement:
40: * This product includes software developed by the University of
41: * California, Berkeley and its contributors.
42: * 4. Neither the name of the University nor the names of its contributors
43: * may be used to endorse or promote products derived from this software
44: * without specific prior written permission.
45: *
46: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
47: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
50: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
51: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
52: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
54: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
55: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56: * SUCH DAMAGE.
57: *
58: * @(#)in.h 8.3 (Berkeley) 1/3/94
59: */
60:
61: /*
62: * Constants and structures defined by the internet system,
63: * Per RFC 790, September 1981, and numerous additions.
64: */
65:
66: #ifndef _NETINET_IN_H_
67: #define _NETINET_IN_H_
68:
69: /*
70: * Protocols
71: */
72: #define IPPROTO_IP 0 /* dummy for IP */
73: #define IPPROTO_ICMP 1 /* control message protocol */
74: #define IPPROTO_IGMP 2 /* group mgmt protocol */
75: #define IPPROTO_GGP 3 /* gateway^2 (deprecated) */
76: #define IPPROTO_TCP 6 /* tcp */
77: #define IPPROTO_EGP 8 /* exterior gateway protocol */
78: #define IPPROTO_PUP 12 /* pup */
79: #define IPPROTO_UDP 17 /* user datagram protocol */
80: #define IPPROTO_IDP 22 /* xns idp */
81: #define IPPROTO_TP 29 /* tp-4 w/ class negotiation */
82: #define IPPROTO_EON 80 /* ISO cnlp */
83: #define IPPROTO_ENCAP 98 /* encapsulation header */
84:
85: #define IPPROTO_RAW 255 /* raw IP packet */
86: #define IPPROTO_MAX 256
87:
88:
89: /*
90: * Local port number conventions:
91: * Ports < IPPORT_RESERVED are reserved for
92: * privileged processes (e.g. root).
93: * Ports > IPPORT_USERRESERVED are reserved
94: * for servers, not necessarily privileged.
95: */
96: #define IPPORT_RESERVED 1024
97: #define IPPORT_USERRESERVED 5000
98:
99: /*
100: * Internet address (a structure for historical reasons)
101: */
102: struct in_addr {
103: u_long s_addr;
104: };
105:
106: /*
107: * Definitions of bits in internet address integers.
108: * On subnets, the decomposition of addresses to host and net parts
109: * is done according to subnet mask, not the masks here.
110: */
111: #define IN_CLASSA(i) (((long)(i) & 0x80000000) == 0)
112: #define IN_CLASSA_NET 0xff000000
113: #define IN_CLASSA_NSHIFT 24
114: #define IN_CLASSA_HOST 0x00ffffff
115: #define IN_CLASSA_MAX 128
116:
117: #define IN_CLASSB(i) (((long)(i) & 0xc0000000) == 0x80000000)
118: #define IN_CLASSB_NET 0xffff0000
119: #define IN_CLASSB_NSHIFT 16
120: #define IN_CLASSB_HOST 0x0000ffff
121: #define IN_CLASSB_MAX 65536
122:
123: #define IN_CLASSC(i) (((long)(i) & 0xe0000000) == 0xc0000000)
124: #define IN_CLASSC_NET 0xffffff00
125: #define IN_CLASSC_NSHIFT 8
126: #define IN_CLASSC_HOST 0x000000ff
127:
128: #define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000)
129: #define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */
130: #define IN_CLASSD_NSHIFT 28 /* net and host fields, but */
131: #define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */
132: #define IN_MULTICAST(i) IN_CLASSD(i)
133:
134: #define IN_EXPERIMENTAL(i) (((long)(i) & 0xf0000000) == 0xf0000000)
135: #define IN_BADCLASS(i) (((long)(i) & 0xf0000000) == 0xf0000000)
136:
137: #define INADDR_ANY (u_long)0x00000000
138: #define INADDR_LOOPBACK (u_long)0x7f000001
139: #define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */
140: #ifndef _KERNEL
141: #define INADDR_NONE 0xffffffff /* -1 return */
142: #endif
143:
144: #define INADDR_UNSPEC_GROUP (u_long)0xe0000000 /* 224.0.0.0 */
145: #define INADDR_ALLHOSTS_GROUP (u_long)0xe0000001 /* 224.0.0.1 */
146: #define INADDR_MAX_LOCAL_GROUP (u_long)0xe00000ff /* 224.0.0.255 */
147:
148: #define IN_LOOPBACKNET 127 /* official! */
149:
150: /*
151: * Socket address, internet style.
152: */
153: struct sockaddr_in {
154: u_char sin_len;
155: u_char sin_family;
156: u_short sin_port;
157: struct in_addr sin_addr;
158: char sin_zero[8];
159: };
160:
161: /*
162: * Structure used to describe IP options.
163: * Used to store options internally, to pass them to a process,
164: * or to restore options retrieved earlier.
165: * The ip_dst is used for the first-hop gateway when using a source route
166: * (this gets put into the header proper).
167: */
168: struct ip_opts {
169: struct in_addr ip_dst; /* first hop, 0 w/o src rt */
170: char ip_opts[40]; /* actually variable in size */
171: };
172:
173: /*
174: * Options for use with [gs]etsockopt at the IP level.
175: * First word of comment is data type; bool is stored in int.
176: */
177: #define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */
178: #define IP_HDRINCL 2 /* int; header is included with data */
179: #define IP_TOS 3 /* int; IP type of service and preced. */
180: #define IP_TTL 4 /* int; IP time to live */
181: #define IP_RECVOPTS 5 /* bool; receive all IP opts w/dgram */
182: #define IP_RECVRETOPTS 6 /* bool; receive IP opts for response */
183: #define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/dgram */
184: #define IP_RETOPTS 8 /* ip_opts; set/get IP options */
185: #define IP_MULTICAST_IF 9 /* u_char; set/get IP multicast i/f */
186: #define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */
187: #define IP_MULTICAST_LOOP 11 /* u_char; set/get IP multicast loopback */
188: #define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */
189: #define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */
190:
191: /*
192: * Defaults and limits for options
193: */
194: #define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */
195: #define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
196: #define IP_MAX_MEMBERSHIPS 20 /* per socket; must fit in one mbuf */
197:
198: /*
199: * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
200: */
201: struct ip_mreq {
202: struct in_addr imr_multiaddr; /* IP multicast address of group */
203: struct in_addr imr_interface; /* local IP address of interface */
204: };
205:
206: /*
207: * Definitions for inet sysctl operations.
208: *
209: * Third level is protocol number.
210: * Fourth level is desired variable within that protocol.
211: */
212: #define IPPROTO_MAXID (IPPROTO_IDP + 1) /* don't list to IPPROTO_MAX */
213:
214: #define CTL_IPPROTO_NAMES { \
215: { "ip", CTLTYPE_NODE }, \
216: { "icmp", CTLTYPE_NODE }, \
217: { "igmp", CTLTYPE_NODE }, \
218: { "ggp", CTLTYPE_NODE }, \
219: { 0, 0 }, \
220: { 0, 0 }, \
221: { "tcp", CTLTYPE_NODE }, \
222: { 0, 0 }, \
223: { "egp", CTLTYPE_NODE }, \
224: { 0, 0 }, \
225: { 0, 0 }, \
226: { 0, 0 }, \
227: { "pup", CTLTYPE_NODE }, \
228: { 0, 0 }, \
229: { 0, 0 }, \
230: { 0, 0 }, \
231: { 0, 0 }, \
232: { "udp", CTLTYPE_NODE }, \
233: { 0, 0 }, \
234: { 0, 0 }, \
235: { 0, 0 }, \
236: { 0, 0 }, \
237: { "idp", CTLTYPE_NODE }, \
238: }
239:
240: /*
241: * Names for IP sysctl objects
242: */
243: #define IPCTL_FORWARDING 1 /* act as router */
244: #define IPCTL_SENDREDIRECTS 2 /* may send redirects when forwarding */
245: #define IPCTL_DEFTTL 3 /* default TTL */
246: #ifdef notyet
247: #define IPCTL_DEFMTU 4 /* default MTU */
248: #endif
249: #define IPCTL_MAXID 5
250:
251: #define IPCTL_NAMES { \
252: { 0, 0 }, \
253: { "forwarding", CTLTYPE_INT }, \
254: { "redirect", CTLTYPE_INT }, \
255: { "ttl", CTLTYPE_INT }, \
256: { "mtu", CTLTYPE_INT }, \
257: }
258:
259:
260: #ifdef _KERNEL
261: int in_broadcast __P((struct in_addr, struct ifnet *));
262: int in_canforward __P((struct in_addr));
263: int in_cksum __P((struct mbuf *, int));
264: int in_localaddr __P((struct in_addr));
265: u_long in_netof __P((struct in_addr));
266: void in_socktrim __P((struct sockaddr_in *));
267: #endif
268: #endif /* !_NETINET_IN_H_ */
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