Commit | Line | Data |
---|---|---|
8ae0e4b4 | 1 | /* |
bab61b5b | 2 | * Copyright (c) 1982, 1986, 1990 Regents of the University of California. |
2b6b6284 | 3 | * All rights reserved. |
8ae0e4b4 | 4 | * |
dbf0c423 | 5 | * %sccs.include.redist.c% |
2b6b6284 | 6 | * |
45889c65 | 7 | * @(#)in.h 7.11 (Berkeley) %G% |
8ae0e4b4 | 8 | */ |
8958351e BJ |
9 | |
10 | /* | |
11 | * Constants and structures defined by the internet system, | |
12 | * Per RFC 790, September 1981. | |
13 | */ | |
14 | ||
15 | /* | |
16 | * Protocols | |
17 | */ | |
55f549b4 | 18 | #define IPPROTO_IP 0 /* dummy for IP */ |
8958351e | 19 | #define IPPROTO_ICMP 1 /* control message protocol */ |
8114dc67 | 20 | #define IPPROTO_GGP 3 /* gateway^2 (deprecated) */ |
8958351e | 21 | #define IPPROTO_TCP 6 /* tcp */ |
c49e68cc | 22 | #define IPPROTO_EGP 8 /* exterior gateway protocol */ |
8958351e BJ |
23 | #define IPPROTO_PUP 12 /* pup */ |
24 | #define IPPROTO_UDP 17 /* user datagram protocol */ | |
55f549b4 | 25 | #define IPPROTO_IDP 22 /* xns idp */ |
b4dc7708 KS |
26 | #define IPPROTO_TP 29 /* tp-4 w/ class negotiation */ |
27 | #define IPPROTO_EON 80 /* ISO cnlp */ | |
8958351e | 28 | |
13ab51b7 | 29 | #define IPPROTO_RAW 255 /* raw IP packet */ |
eb44bfb2 BJ |
30 | #define IPPROTO_MAX 256 |
31 | ||
becdab37 BJ |
32 | |
33 | /* | |
bab61b5b | 34 | * Local port number conventions: |
becdab37 BJ |
35 | * Ports < IPPORT_RESERVED are reserved for |
36 | * privileged processes (e.g. root). | |
f44e5691 MK |
37 | * Ports > IPPORT_USERRESERVED are reserved |
38 | * for servers, not necessarily privileged. | |
becdab37 | 39 | */ |
1aa87517 | 40 | #define IPPORT_RESERVED 1024 |
f44e5691 | 41 | #define IPPORT_USERRESERVED 5000 |
1aa87517 | 42 | |
8958351e | 43 | /* |
e4dfb782 | 44 | * Internet address (a structure for historical reasons) |
8958351e | 45 | */ |
2b4b57cd | 46 | struct in_addr { |
e4dfb782 | 47 | u_long s_addr; |
8958351e | 48 | }; |
2b4b57cd | 49 | |
ae34128e | 50 | /* |
a8d3bf7f | 51 | * Definitions of bits in internet address integers. |
14c6a3d7 MK |
52 | * On subnets, the decomposition of addresses to host and net parts |
53 | * is done according to subnet mask, not the masks here. | |
ae34128e | 54 | */ |
8011f5df | 55 | #define IN_CLASSA(i) (((long)(i) & 0x80000000) == 0) |
a8d3bf7f BJ |
56 | #define IN_CLASSA_NET 0xff000000 |
57 | #define IN_CLASSA_NSHIFT 24 | |
58 | #define IN_CLASSA_HOST 0x00ffffff | |
3adde5ac | 59 | #define IN_CLASSA_MAX 128 |
a8d3bf7f | 60 | |
8011f5df | 61 | #define IN_CLASSB(i) (((long)(i) & 0xc0000000) == 0x80000000) |
a8d3bf7f BJ |
62 | #define IN_CLASSB_NET 0xffff0000 |
63 | #define IN_CLASSB_NSHIFT 16 | |
64 | #define IN_CLASSB_HOST 0x0000ffff | |
3adde5ac | 65 | #define IN_CLASSB_MAX 65536 |
ae34128e | 66 | |
b4f9e9c7 | 67 | #define IN_CLASSC(i) (((long)(i) & 0xe0000000) == 0xc0000000) |
a8d3bf7f BJ |
68 | #define IN_CLASSC_NET 0xffffff00 |
69 | #define IN_CLASSC_NSHIFT 8 | |
70 | #define IN_CLASSC_HOST 0x000000ff | |
ae34128e | 71 | |
b4f9e9c7 MK |
72 | #define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000) |
73 | #define IN_MULTICAST(i) IN_CLASSD(i) | |
74 | ||
75 | #define IN_EXPERIMENTAL(i) (((long)(i) & 0xe0000000) == 0xe0000000) | |
76 | #define IN_BADCLASS(i) (((long)(i) & 0xf0000000) == 0xf0000000) | |
77 | ||
8011f5df MK |
78 | #define INADDR_ANY (u_long)0x00000000 |
79 | #define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */ | |
b410e761 MK |
80 | #ifndef KERNEL |
81 | #define INADDR_NONE 0xffffffff /* -1 return */ | |
82 | #endif | |
3adde5ac | 83 | |
b4f9e9c7 MK |
84 | #define IN_LOOPBACKNET 127 /* official! */ |
85 | ||
2b4b57cd BJ |
86 | /* |
87 | * Socket address, internet style. | |
88 | */ | |
89 | struct sockaddr_in { | |
b4dc7708 KS |
90 | u_char sin_len; |
91 | u_char sin_family; | |
2b4b57cd BJ |
92 | u_short sin_port; |
93 | struct in_addr sin_addr; | |
94 | char sin_zero[8]; | |
95 | }; | |
eb2e4af9 | 96 | |
bab61b5b MK |
97 | /* |
98 | * Structure used to describe IP options. | |
99 | * Used to store options internally, to pass them to a process, | |
100 | * or to restore options retrieved earlier. | |
101 | * The ip_dst is used for the first-hop gateway when using a source route | |
102 | * (this gets put into the header proper). | |
103 | */ | |
104 | struct ip_opts { | |
105 | struct in_addr ip_dst; /* first hop, 0 w/o src rt */ | |
106 | char ip_opts[40]; /* actually variable in size */ | |
107 | }; | |
108 | ||
55f549b4 MK |
109 | /* |
110 | * Options for use with [gs]etsockopt at the IP level. | |
bab61b5b | 111 | * First word of comment is data type; bool is stored in int. |
55f549b4 | 112 | */ |
bab61b5b MK |
113 | #define IP_OPTIONS 1 /* buf/ip_opts; set/get IP per-packet options */ |
114 | #define IP_HDRINCL 2 /* int; header is included with data (raw) */ | |
115 | #define IP_TOS 3 /* int; IP type of service and precedence */ | |
116 | #define IP_TTL 4 /* int; IP time to live */ | |
117 | #define IP_RECVOPTS 5 /* bool; receive all IP options w/datagram */ | |
118 | #define IP_RECVRETOPTS 6 /* bool; receive IP options for response */ | |
119 | #define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/datagram */ | |
120 | #define IP_RETOPTS 8 /* ip_opts; set/get IP per-packet options */ | |
55f549b4 | 121 | |
59965020 | 122 | #ifdef KERNEL |
e4dfb782 | 123 | struct in_addr in_makeaddr(); |
8011f5df | 124 | u_long in_netof(), in_lnaof(); |
59965020 | 125 | #endif |