| 1 | /* |
| 2 | * Copyright (c) 1982, 1986, 1990 Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * 3. All advertising materials mentioning features or use of this software |
| 14 | * must display the following acknowledgement: |
| 15 | * This product includes software developed by the University of |
| 16 | * California, Berkeley and its contributors. |
| 17 | * 4. Neither the name of the University nor the names of its contributors |
| 18 | * may be used to endorse or promote products derived from this software |
| 19 | * without specific prior written permission. |
| 20 | * |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 31 | * SUCH DAMAGE. |
| 32 | * |
| 33 | * from: @(#)in.h 7.11 (Berkeley) 4/20/91 |
| 34 | * $Id: in.h,v 1.3 1993/10/16 18:25:58 rgrimes Exp $ |
| 35 | */ |
| 36 | |
| 37 | #ifndef _NETINET_IN_H_ |
| 38 | #define _NETINET_IN_H_ |
| 39 | |
| 40 | /* |
| 41 | * Constants and structures defined by the internet system, |
| 42 | * Per RFC 790, September 1981. |
| 43 | */ |
| 44 | |
| 45 | /* |
| 46 | * Protocols |
| 47 | */ |
| 48 | #define IPPROTO_IP 0 /* dummy for IP */ |
| 49 | #define IPPROTO_ICMP 1 /* control message protocol */ |
| 50 | #define IPPROTO_GGP 3 /* gateway^2 (deprecated) */ |
| 51 | #define IPPROTO_TCP 6 /* tcp */ |
| 52 | #define IPPROTO_EGP 8 /* exterior gateway protocol */ |
| 53 | #define IPPROTO_PUP 12 /* pup */ |
| 54 | #define IPPROTO_UDP 17 /* user datagram protocol */ |
| 55 | #define IPPROTO_IDP 22 /* xns idp */ |
| 56 | #define IPPROTO_TP 29 /* tp-4 w/ class negotiation */ |
| 57 | #define IPPROTO_EON 80 /* ISO cnlp */ |
| 58 | |
| 59 | #define IPPROTO_RAW 255 /* raw IP packet */ |
| 60 | #define IPPROTO_MAX 256 |
| 61 | |
| 62 | |
| 63 | /* |
| 64 | * Local port number conventions: |
| 65 | * Ports < IPPORT_RESERVED are reserved for |
| 66 | * privileged processes (e.g. root). |
| 67 | * Ports > IPPORT_USERRESERVED are reserved |
| 68 | * for servers, not necessarily privileged. |
| 69 | */ |
| 70 | #define IPPORT_RESERVED 1024 |
| 71 | #define IPPORT_USERRESERVED 5000 |
| 72 | |
| 73 | /* |
| 74 | * Internet address (a structure for historical reasons) |
| 75 | */ |
| 76 | struct in_addr { |
| 77 | u_long s_addr; |
| 78 | }; |
| 79 | |
| 80 | /* |
| 81 | * Definitions of bits in internet address integers. |
| 82 | * On subnets, the decomposition of addresses to host and net parts |
| 83 | * is done according to subnet mask, not the masks here. |
| 84 | */ |
| 85 | #define IN_CLASSA(i) (((u_long)(i) & 0x80000000UL) == 0) |
| 86 | #define IN_CLASSA_NET 0xff000000UL |
| 87 | #define IN_CLASSA_NSHIFT 24 |
| 88 | #define IN_CLASSA_HOST 0x00ffffffUL |
| 89 | #define IN_CLASSA_MAX 128 |
| 90 | |
| 91 | #define IN_CLASSB(i) (((u_long)(i) & 0xc0000000UL) == 0x80000000UL) |
| 92 | #define IN_CLASSB_NET 0xffff0000UL |
| 93 | #define IN_CLASSB_NSHIFT 16 |
| 94 | #define IN_CLASSB_HOST 0x0000ffffUL |
| 95 | #define IN_CLASSB_MAX 65536 |
| 96 | |
| 97 | #define IN_CLASSC(i) (((u_long)(i) & 0xe0000000UL) == 0xc0000000UL) |
| 98 | #define IN_CLASSC_NET 0xffffff00UL |
| 99 | #define IN_CLASSC_NSHIFT 8 |
| 100 | #define IN_CLASSC_HOST 0x000000ffUL |
| 101 | |
| 102 | #define IN_CLASSD(i) (((u_long)(i) & 0xf0000000UL) == 0xe0000000UL) |
| 103 | #define IN_MULTICAST(i) IN_CLASSD(i) |
| 104 | |
| 105 | #define IN_EXPERIMENTAL(i) (((u_long)(i) & 0xe0000000UL) == 0xe0000000UL) |
| 106 | #define IN_BADCLASS(i) (((u_long)(i) & 0xf0000000UL) == 0xf0000000UL) |
| 107 | |
| 108 | #define INADDR_ANY 0x00000000UL |
| 109 | #define INADDR_BROADCAST 0xffffffffUL /* must be masked */ |
| 110 | #ifndef KERNEL |
| 111 | #define INADDR_NONE 0xffffffffUL /* -1 return */ |
| 112 | #endif |
| 113 | |
| 114 | #define IN_LOOPBACKNET 127 /* official! */ |
| 115 | |
| 116 | /* |
| 117 | * Socket address, internet style. |
| 118 | */ |
| 119 | struct sockaddr_in { |
| 120 | u_char sin_len; |
| 121 | u_char sin_family; |
| 122 | u_short sin_port; |
| 123 | struct in_addr sin_addr; |
| 124 | char sin_zero[8]; |
| 125 | }; |
| 126 | |
| 127 | /* |
| 128 | * Structure used to describe IP options. |
| 129 | * Used to store options internally, to pass them to a process, |
| 130 | * or to restore options retrieved earlier. |
| 131 | * The ip_dst is used for the first-hop gateway when using a source route |
| 132 | * (this gets put into the header proper). |
| 133 | */ |
| 134 | struct ip_opts { |
| 135 | struct in_addr ip_dst; /* first hop, 0 w/o src rt */ |
| 136 | char ip_opts[40]; /* actually variable in size */ |
| 137 | }; |
| 138 | |
| 139 | /* |
| 140 | * Options for use with [gs]etsockopt at the IP level. |
| 141 | * First word of comment is data type; bool is stored in int. |
| 142 | */ |
| 143 | #define IP_OPTIONS 1 /* buf/ip_opts; set/get IP per-packet options */ |
| 144 | #define IP_HDRINCL 2 /* int; header is included with data (raw) */ |
| 145 | #define IP_TOS 3 /* int; IP type of service and precedence */ |
| 146 | #define IP_TTL 4 /* int; IP time to live */ |
| 147 | #define IP_RECVOPTS 5 /* bool; receive all IP options w/datagram */ |
| 148 | #define IP_RECVRETOPTS 6 /* bool; receive IP options for response */ |
| 149 | #define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/datagram */ |
| 150 | #define IP_RETOPTS 8 /* ip_opts; set/get IP per-packet options */ |
| 151 | |
| 152 | #ifdef KERNEL |
| 153 | /* From in.c: */ |
| 154 | extern struct in_addr in_makeaddr(u_long, u_long); |
| 155 | extern u_long in_netof(struct in_addr); |
| 156 | extern void in_sockmaskof(struct in_addr, struct sockaddr_in *); |
| 157 | extern u_long in_lnaof(struct in_addr); |
| 158 | extern int in_localaddr(struct in_addr); |
| 159 | extern int in_canforward(struct in_addr); |
| 160 | struct socket; struct ifnet; |
| 161 | extern int in_control(struct socket *, int, caddr_t, struct ifnet *); |
| 162 | struct in_ifaddr; |
| 163 | extern int in_broadcast(struct in_addr); |
| 164 | |
| 165 | #endif /* KERNEL */ |
| 166 | |
| 167 | #endif /* _NETINET_IN_H_ */ |