Annotation of embedaddon/pimdd/include/netbsd/netinet/in.h, revision 1.1.1.1
1.1 misho 1: /* $NetBSD: in.h,v 1.28 1997/10/18 21:18:29 kml Exp $ */
2:
3: /*
4: * Copyright (c) 1982, 1986, 1990, 1993
5: * The Regents of the University of California. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by the University of
18: * California, Berkeley and its contributors.
19: * 4. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: *
35: * @(#)in.h 8.3 (Berkeley) 1/3/94
36: */
37:
38: /*
39: * Constants and structures defined by the internet system,
40: * Per RFC 790, September 1981, and numerous additions.
41: */
42:
43: #ifndef _NETINET_IN_H_
44: #define _NETINET_IN_H_
45:
46: /*
47: * Protocols
48: */
49: #define IPPROTO_IP 0 /* dummy for IP */
50: #define IPPROTO_ICMP 1 /* control message protocol */
51: #define IPPROTO_IGMP 2 /* group mgmt protocol */
52: #define IPPROTO_GGP 3 /* gateway^2 (deprecated) */
53: #define IPPROTO_IPIP 4 /* IP inside IP */
54: #define IPPROTO_TCP 6 /* tcp */
55: #define IPPROTO_EGP 8 /* exterior gateway protocol */
56: #define IPPROTO_PUP 12 /* pup */
57: #define IPPROTO_UDP 17 /* user datagram protocol */
58: #define IPPROTO_IDP 22 /* xns idp */
59: #define IPPROTO_TP 29 /* tp-4 w/ class negotiation */
60: #define IPPROTO_ESP 50 /* encap. security payload */
61: #define IPPROTO_AH 51 /* authentication header */
62: #define IPPROTO_EON 80 /* ISO cnlp */
63: #define IPPROTO_ENCAP 98 /* encapsulation header */
64: #define IPPROTO_PIM 103 /* Protocol Independent Mcast */
65:
66: #define IPPROTO_RAW 255 /* raw IP packet */
67: #define IPPROTO_MAX 256
68:
69:
70: /*
71: * Local port number conventions:
72: * Ports < IPPORT_RESERVED are reserved for
73: * privileged processes (e.g. root).
74: * Ports > IPPORT_USERRESERVED are reserved
75: * for servers, not necessarily privileged.
76: */
77: #define IPPORT_RESERVED 1024
78: #define IPPORT_USERRESERVED 5000
79:
80: /*
81: * Internet address (a structure for historical reasons)
82: */
83: struct in_addr {
84: u_int32_t s_addr;
85: };
86:
87: /*
88: * Definitions of bits in internet address integers.
89: * On subnets, the decomposition of addresses to host and net parts
90: * is done according to subnet mask, not the masks here.
91: *
92: * By byte-swapping the constants, we avoid ever having to byte-swap IP
93: * addresses inside the kernel. Unfortunately, user-level programs rely
94: * on these macros not doing byte-swapping.
95: */
96: #ifdef _KERNEL
97: #define __IPADDR(x) ((u_int32_t) htonl((u_int32_t)(x)))
98: #else
99: #define __IPADDR(x) ((u_int32_t)(x))
100: #endif
101:
102: #define IN_CLASSA(i) (((u_int32_t)(i) & __IPADDR(0x80000000)) == \
103: __IPADDR(0x00000000))
104: #define IN_CLASSA_NET __IPADDR(0xff000000)
105: #define IN_CLASSA_NSHIFT 24
106: #define IN_CLASSA_HOST __IPADDR(0x00ffffff)
107: #define IN_CLASSA_MAX 128
108:
109: #define IN_CLASSB(i) (((u_int32_t)(i) & __IPADDR(0xc0000000)) == \
110: __IPADDR(0x80000000))
111: #define IN_CLASSB_NET __IPADDR(0xffff0000)
112: #define IN_CLASSB_NSHIFT 16
113: #define IN_CLASSB_HOST __IPADDR(0x0000ffff)
114: #define IN_CLASSB_MAX 65536
115:
116: #define IN_CLASSC(i) (((u_int32_t)(i) & __IPADDR(0xe0000000)) == \
117: __IPADDR(0xc0000000))
118: #define IN_CLASSC_NET __IPADDR(0xffffff00)
119: #define IN_CLASSC_NSHIFT 8
120: #define IN_CLASSC_HOST __IPADDR(0x000000ff)
121:
122: #define IN_CLASSD(i) (((u_int32_t)(i) & __IPADDR(0xf0000000)) == \
123: __IPADDR(0xe0000000))
124: /* These ones aren't really net and host fields, but routing needn't know. */
125: #define IN_CLASSD_NET __IPADDR(0xf0000000)
126: #define IN_CLASSD_NSHIFT 28
127: #define IN_CLASSD_HOST __IPADDR(0x0fffffff)
128: #define IN_MULTICAST(i) IN_CLASSD(i)
129:
130: #define IN_EXPERIMENTAL(i) (((u_int32_t)(i) & __IPADDR(0xf0000000)) == \
131: __IPADDR(0xf0000000))
132: #define IN_BADCLASS(i) (((u_int32_t)(i) & __IPADDR(0xf0000000)) == \
133: __IPADDR(0xf0000000))
134:
135: #define IN_LOCAL_GROUP(i) (((u_int32_t)(i) & __IPADDR(0xffffff00)) == \
136: __IPADDR(0xe0000000))
137:
138: #define INADDR_ANY __IPADDR(0x00000000)
139: #define INADDR_LOOPBACK __IPADDR(0x7f000001)
140: #define INADDR_BROADCAST __IPADDR(0xffffffff) /* must be masked */
141: #ifndef _KERNEL
142: #define INADDR_NONE __IPADDR(0xffffffff) /* -1 return */
143: #endif
144:
145: #define INADDR_UNSPEC_GROUP __IPADDR(0xe0000000) /* 224.0.0.0 */
146: #define INADDR_ALLHOSTS_GROUP __IPADDR(0xe0000001) /* 224.0.0.1 */
147:
148: #define IN_LOOPBACKNET 127 /* official! */
149:
150: /*
151: * Socket address, internet style.
152: */
153: struct sockaddr_in {
154: u_int8_t sin_len;
155: u_int8_t sin_family;
156: u_int16_t sin_port;
157: struct in_addr sin_addr;
158: int8_t 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: int8_t 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 /* in_addr; 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: #define IP_RECVIF 20 /* bool; receive reception if w/dgram */
191: #define IP_ERRORMTU 21 /* int; get MTU of last xmit = EMSGSIZE */
192:
193: /*
194: * Defaults and limits for options
195: */
196: #define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */
197: #define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
198: #define IP_MAX_MEMBERSHIPS 20 /* per socket; must fit in one mbuf */
199:
200: /*
201: * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
202: */
203: struct ip_mreq {
204: struct in_addr imr_multiaddr; /* IP multicast address of group */
205: struct in_addr imr_interface; /* local IP address of interface */
206: };
207:
208: /*
209: * Definitions for inet sysctl operations.
210: *
211: * Third level is protocol number.
212: * Fourth level is desired variable within that protocol.
213: */
214: #define IPPROTO_MAXID (IPPROTO_IDP + 1) /* don't list to IPPROTO_MAX */
215:
216: #define CTL_IPPROTO_NAMES { \
217: { "ip", CTLTYPE_NODE }, \
218: { "icmp", CTLTYPE_NODE }, \
219: { "igmp", CTLTYPE_NODE }, \
220: { "ggp", CTLTYPE_NODE }, \
221: { 0, 0 }, \
222: { 0, 0 }, \
223: { "tcp", CTLTYPE_NODE }, \
224: { 0, 0 }, \
225: { "egp", CTLTYPE_NODE }, \
226: { 0, 0 }, \
227: { 0, 0 }, \
228: { 0, 0 }, \
229: { "pup", CTLTYPE_NODE }, \
230: { 0, 0 }, \
231: { 0, 0 }, \
232: { 0, 0 }, \
233: { 0, 0 }, \
234: { "udp", CTLTYPE_NODE }, \
235: { 0, 0 }, \
236: { 0, 0 }, \
237: { 0, 0 }, \
238: { 0, 0 }, \
239: { "idp", CTLTYPE_NODE }, \
240: { 0, 0 }, \
241: { 0, 0 }, \
242: { 0, 0 }, \
243: { 0, 0 }, \
244: { 0, 0 }, \
245: { 0, 0 }, \
246: { 0, 0 }, \
247: { 0, 0 }, \
248: { 0, 0 }, \
249: { 0, 0 }, \
250: { 0, 0 }, \
251: { 0, 0 }, \
252: { 0, 0 }, \
253: { 0, 0 }, \
254: { 0, 0 }, \
255: { 0, 0 }, \
256: { 0, 0 }, \
257: { 0, 0 }, \
258: { 0, 0 }, \
259: { 0, 0 }, \
260: { 0, 0 }, \
261: { 0, 0 }, \
262: { 0, 0 }, \
263: { 0, 0 }, \
264: { 0, 0 }, \
265: { 0, 0 }, \
266: { 0, 0 }, \
267: { 0, 0 }, \
268: { 0, 0 }, \
269: { 0, 0 }, \
270: { 0, 0 }, \
271: { 0, 0 }, \
272: { 0, 0 }, \
273: { 0, 0 }, \
274: { 0, 0 }, \
275: { 0, 0 }, \
276: { 0, 0 }, \
277: { 0, 0 }, \
278: { 0, 0 }, \
279: { 0, 0 }, \
280: { 0, 0 }, \
281: { 0, 0 }, \
282: { 0, 0 }, \
283: { 0, 0 }, \
284: { 0, 0 }, \
285: { 0, 0 }, \
286: { 0, 0 }, \
287: { 0, 0 }, \
288: { 0, 0 }, \
289: { 0, 0 }, \
290: { 0, 0 }, \
291: { 0, 0 }, \
292: { 0, 0 }, \
293: { 0, 0 }, \
294: { 0, 0 }, \
295: { 0, 0 }, \
296: { 0, 0 }, \
297: { 0, 0 }, \
298: { 0, 0 }, \
299: { 0, 0 }, \
300: { 0, 0 }, \
301: { 0, 0 }, \
302: { 0, 0 }, \
303: { 0, 0 }, \
304: { 0, 0 }, \
305: { 0, 0 }, \
306: { 0, 0 }, \
307: { 0, 0 }, \
308: { 0, 0 }, \
309: { 0, 0 }, \
310: { 0, 0 }, \
311: { 0, 0 }, \
312: { 0, 0 }, \
313: { 0, 0 }, \
314: { 0, 0 }, \
315: { 0, 0 }, \
316: { 0, 0 }, \
317: { 0, 0 }, \
318: { 0, 0 }, \
319: { 0, 0 }, \
320: { "pim", CTLTYPE_NODE }, \
321: }
322:
323: /*
324: * Names for IP sysctl objects
325: */
326: #define IPCTL_FORWARDING 1 /* act as router */
327: #define IPCTL_SENDREDIRECTS 2 /* may send redirects when forwarding */
328: #define IPCTL_DEFTTL 3 /* default TTL */
329: #ifdef notyet
330: #define IPCTL_DEFMTU 4 /* default MTU */
331: #endif
332: #define IPCTL_FORWSRCRT 5 /* forward source-routed packets */
333: #define IPCTL_DIRECTEDBCAST 6 /* default broadcast behavior */
334: #define IPCTL_ALLOWSRCRT 7 /* allow/drop all source-routed pkts */
335: #define IPCTL_SUBNETSARELOCAL 8 /* treat subnets as local addresses */
336: #define IPCTL_MTUDISC 9 /* allow path MTU discovery */
337: #define IPCTL_MAXID 10
338:
339: #define IPCTL_NAMES { \
340: { 0, 0 }, \
341: { "forwarding", CTLTYPE_INT }, \
342: { "redirect", CTLTYPE_INT }, \
343: { "ttl", CTLTYPE_INT }, \
344: { "mtu", CTLTYPE_INT }, \
345: { "forwsrcrt", CTLTYPE_INT }, \
346: { "directed-broadcast", CTLTYPE_INT }, \
347: { "allowsrcrt", CTLTYPE_INT }, \
348: { "subnetsarelocal", CTLTYPE_INT }, \
349: { "mtudisc", CTLTYPE_INT }, \
350: }
351:
352:
353: #ifdef _KERNEL
354: extern struct in_addr zeroin_addr;
355:
356: int in_broadcast __P((struct in_addr, struct ifnet *));
357: int in_canforward __P((struct in_addr));
358: int in_cksum __P((struct mbuf *, int));
359: int in_localaddr __P((struct in_addr));
360: void in_socktrim __P((struct sockaddr_in *));
361:
362: #define in_hosteq(s,t) ((s).s_addr == (t).s_addr)
363: #define in_nullhost(x) ((x).s_addr == INADDR_ANY)
364:
365: #define satosin(sa) ((struct sockaddr_in *)(sa))
366: #define sintosa(sin) ((struct sockaddr *)(sin))
367: #define ifatoia(ifa) ((struct in_ifaddr *)(ifa))
368: #endif
369: #endif /* !_NETINET_IN_H_ */
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