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249 lines
7.8 KiB
C
249 lines
7.8 KiB
C
/*
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* Copyright (c) 1982, 1986, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* [¤3 Deleted as of 22Jul99, see
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* ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
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* for details]
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)in.h 8.3 (Berkeley) 1/3/94
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*/
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/* Adapted for GUSI by Matthias Neeracher <neeri@iis.ee.ethz.ch> */
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#ifndef _NETINET_IN_H_
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#define _NETINET_IN_H_
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/* xtonx() mandated available by XNS -- neeri */
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#include <machine/endian.h>
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/*
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* Constants and structures defined by the internet system,
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* Per RFC 790, September 1981, and numerous additions.
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*/
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/*
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* Protocols
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*/
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#define IPPROTO_IP 0 /* dummy for IP */
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#define IPPROTO_ICMP 1 /* control message protocol */
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#define IPPROTO_IGMP 2 /* group mgmt protocol */
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#define IPPROTO_GGP 3 /* gateway^2 (deprecated) */
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#define IPPROTO_TCP 6 /* tcp */
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#define IPPROTO_EGP 8 /* exterior gateway protocol */
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#define IPPROTO_PUP 12 /* pup */
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#define IPPROTO_UDP 17 /* user datagram protocol */
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#define IPPROTO_IDP 22 /* xns idp */
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#define IPPROTO_TP 29 /* tp-4 w/ class negotiation */
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#define IPPROTO_EON 80 /* ISO cnlp */
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#define IPPROTO_ENCAP 98 /* encapsulation header */
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#define IPPROTO_RAW 255 /* raw IP packet */
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#define IPPROTO_MAX 256
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/*
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* Local port number conventions:
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* Ports < IPPORT_RESERVED are reserved for
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* privileged processes (e.g. root).
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* Ports > IPPORT_USERRESERVED are reserved
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* for servers, not necessarily privileged.
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*/
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#define IPPORT_RESERVED 1024
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#define IPPORT_USERRESERVED 5000
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/* Types mandated by XNS -- neeri */
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typedef uint16_t in_port_t;
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typedef uint32_t in_addr_t;
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/*
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* Internet address (a structure for historical reasons)
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*/
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struct in_addr {
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in_addr_t s_addr;
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};
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/*
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* Definitions of bits in internet address integers.
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* On subnets, the decomposition of addresses to host and net parts
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* is done according to subnet mask, not the masks here.
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*/
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#define IN_CLASSA(i) (((long)(i) & 0x80000000) == 0)
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#define IN_CLASSA_NET 0xff000000
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#define IN_CLASSA_NSHIFT 24
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#define IN_CLASSA_HOST 0x00ffffff
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#define IN_CLASSA_MAX 128
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#define IN_CLASSB(i) (((long)(i) & 0xc0000000) == 0x80000000)
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#define IN_CLASSB_NET 0xffff0000
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#define IN_CLASSB_NSHIFT 16
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#define IN_CLASSB_HOST 0x0000ffff
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#define IN_CLASSB_MAX 65536
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#define IN_CLASSC(i) (((long)(i) & 0xe0000000) == 0xc0000000)
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#define IN_CLASSC_NET 0xffffff00
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#define IN_CLASSC_NSHIFT 8
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#define IN_CLASSC_HOST 0x000000ff
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#define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000)
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#define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */
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#define IN_CLASSD_NSHIFT 28 /* net and host fields, but */
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#define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */
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#define IN_MULTICAST(i) IN_CLASSD(i)
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#define IN_EXPERIMENTAL(i) (((long)(i) & 0xf0000000) == 0xf0000000)
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#define IN_BADCLASS(i) (((long)(i) & 0xf0000000) == 0xf0000000)
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#define INADDR_ANY (u_long)0x00000000
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#define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */
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#define INADDR_NONE 0xffffffff /* -1 return */
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#define INADDR_UNSPEC_GROUP (u_long)0xe0000000 /* 224.0.0.0 */
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#define INADDR_ALLHOSTS_GROUP (u_long)0xe0000001 /* 224.0.0.1 */
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#define INADDR_MAX_LOCAL_GROUP (u_long)0xe00000ff /* 224.0.0.255 */
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#define IN_LOOPBACKNET 127 /* official! */
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/* Mandated by XNS -- neeri */
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#ifndef _SA_FAMILY_T_DEFINED
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#define _SA_FAMILY_T_DEFINED
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typedef uint16_t sa_family_t;
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#endif
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/*
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* Socket address, internet style.
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*/
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struct sockaddr_in {
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sa_family_t sin_family;
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in_port_t sin_port;
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struct in_addr sin_addr;
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unsigned char sin_zero[8];
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};
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/*
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* Structure used to describe IP options.
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* Used to store options internally, to pass them to a process,
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* or to restore options retrieved earlier.
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* The ip_dst is used for the first-hop gateway when using a source route
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* (this gets put into the header proper).
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*/
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typedef struct {
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struct in_addr ip_dst; /* first hop, 0 w/o src rt */
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char ip_opts[40]; /* actually variable in size */
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} ip_opts;
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/*
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* Options for use with [gs]etsockopt at the IP level.
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* First word of comment is data type; bool is stored in int.
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*/
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#define IP_OPTIONS 0x01
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#define IP_TOS 0x02
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#define IP_TTL 0x03
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#define IP_REUSEADDR 0x04
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#define IP_DONTROUTE 0x10
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#define IP_BROADCAST 0x20
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#define IP_HDRINCL 0x1002
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#define IP_RCVOPTS 0x1005
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#define IP_RCVDSTADDR 0x1007
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#define IP_MULTICAST_IF 0x1010 /* set/get IP multicast interface */
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#define IP_MULTICAST_TTL 0x1011 /* set/get IP multicast timetolive */
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#define IP_MULTICAST_LOOP 0x1012 /* set/get IP multicast loopback */
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#define IP_ADD_MEMBERSHIP 0x1013 /* add an IP group membership */
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#define IP_DROP_MEMBERSHIP 0x1014 /* drop an IP group membership */
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#define IP_BROADCAST_IF 0x1015 /* Set interface for broadcasts */
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#define IP_RCVIFADDR 0x1016 /* Set interface for broadcasts */
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/*
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* Defaults and limits for options
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*/
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#define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */
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#define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
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#define IP_MAX_MEMBERSHIPS 20 /* per socket; must fit in one mbuf */
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/*
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* Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
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*/
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struct ip_mreq {
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struct in_addr imr_multiaddr; /* IP multicast address of group */
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struct in_addr imr_interface; /* local IP address of interface */
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};
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/*
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* Definitions for inet sysctl operations.
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*
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* Third level is protocol number.
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* Fourth level is desired variable within that protocol.
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*/
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#define IPPROTO_MAXID (IPPROTO_IDP + 1) /* don't list to IPPROTO_MAX */
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#define CTL_IPPROTO_NAMES { \
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{ "ip", CTLTYPE_NODE }, \
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{ "icmp", CTLTYPE_NODE }, \
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{ "igmp", CTLTYPE_NODE }, \
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{ "ggp", CTLTYPE_NODE }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ "tcp", CTLTYPE_NODE }, \
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{ 0, 0 }, \
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{ "egp", CTLTYPE_NODE }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ "pup", CTLTYPE_NODE }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ "udp", CTLTYPE_NODE }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ "idp", CTLTYPE_NODE }, \
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}
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/*
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* Names for IP sysctl objects
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*/
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#define IPCTL_FORWARDING 1 /* act as router */
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#define IPCTL_SENDREDIRECTS 2 /* may send redirects when forwarding */
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#define IPCTL_DEFTTL 3 /* default TTL */
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#ifdef notyet
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#define IPCTL_DEFMTU 4 /* default MTU */
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#endif
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#define IPCTL_MAXID 5
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#define IPCTL_NAMES { \
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{ 0, 0 }, \
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{ "forwarding", CTLTYPE_INT }, \
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{ "redirect", CTLTYPE_INT }, \
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{ "ttl", CTLTYPE_INT }, \
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{ "mtu", CTLTYPE_INT }, \
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}
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#endif /* _NETINET_IN_H_ */
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