in.h revision 12003
155714Skris/* 255714Skris * Copyright (c) 1982, 1986, 1990, 1993 355714Skris * The Regents of the University of California. All rights reserved. 455714Skris * 555714Skris * Redistribution and use in source and binary forms, with or without 655714Skris * modification, are permitted provided that the following conditions 755714Skris * are met: 855714Skris * 1. Redistributions of source code must retain the above copyright 955714Skris * notice, this list of conditions and the following disclaimer. 1055714Skris * 2. Redistributions in binary form must reproduce the above copyright 1155714Skris * notice, this list of conditions and the following disclaimer in the 1255714Skris * documentation and/or other materials provided with the distribution. 1355714Skris * 3. All advertising materials mentioning features or use of this software 1455714Skris * must display the following acknowledgement: 1555714Skris * This product includes software developed by the University of 1655714Skris * California, Berkeley and its contributors. 1755714Skris * 4. Neither the name of the University nor the names of its contributors 1855714Skris * may be used to endorse or promote products derived from this software 1955714Skris * without specific prior written permission. 2055714Skris * 2155714Skris * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2255714Skris * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2355714Skris * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2455714Skris * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2555714Skris * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2655714Skris * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2755714Skris * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2855714Skris * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2955714Skris * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3055714Skris * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3155714Skris * SUCH DAMAGE. 3255714Skris * 3355714Skris * @(#)in.h 8.3 (Berkeley) 1/3/94 3455714Skris * $Id: in.h,v 1.11 1995/07/18 09:56:42 peter Exp $ 3555714Skris */ 3655714Skris 3755714Skris#ifndef _NETINET_IN_H_ 3855714Skris#define _NETINET_IN_H_ 3955714Skris 4055714Skris/* 4155714Skris * Constants and structures defined by the internet system, 4255714Skris * Per RFC 790, September 1981, and numerous additions. 4355714Skris */ 4455714Skris 4555714Skris/* 4655714Skris * Protocols 4755714Skris */ 4855714Skris#define IPPROTO_IP 0 /* dummy for IP */ 4955714Skris#define IPPROTO_ICMP 1 /* control message protocol */ 5055714Skris#define IPPROTO_IGMP 2 /* group mgmt protocol */ 5155714Skris#define IPPROTO_GGP 3 /* gateway^2 (deprecated) */ 5255714Skris#define IPPROTO_IPIP 4 /* IP encapsulation in IP */ 5355714Skris#define IPPROTO_TCP 6 /* tcp */ 5455714Skris#define IPPROTO_EGP 8 /* exterior gateway protocol */ 5555714Skris#define IPPROTO_PUP 12 /* pup */ 5655714Skris#define IPPROTO_UDP 17 /* user datagram protocol */ 5755714Skris#define IPPROTO_IDP 22 /* xns idp */ 5855714Skris#define IPPROTO_TP 29 /* tp-4 w/ class negotiation */ 5955714Skris#define IPPROTO_RSVP 46 /* resource reservation */ 6055714Skris#define IPPROTO_EON 80 /* ISO cnlp */ 6155714Skris#define IPPROTO_ENCAP 98 /* encapsulation header */ 6255714Skris 6355714Skris#define IPPROTO_RAW 255 /* raw IP packet */ 6455714Skris#define IPPROTO_MAX 256 6555714Skris 6655714Skris 6755714Skris/* 6855714Skris * Local port number conventions: 6955714Skris * Ports < IPPORT_RESERVED are reserved for 7055714Skris * privileged processes (e.g. root). 7155714Skris * Ports > IPPORT_USERRESERVED are reserved 7255714Skris * for servers, not necessarily privileged. 7355714Skris */ 7455714Skris#define IPPORT_RESERVED 1024 7555714Skris#define IPPORT_USERRESERVED 5000 7655714Skris 7755714Skris/* 7855714Skris * Internet address (a structure for historical reasons) 7955714Skris */ 8055714Skrisstruct in_addr { 8155714Skris u_long s_addr; 8255714Skris}; 8355714Skris 8455714Skris/* 8555714Skris * Definitions of bits in internet address integers. 8655714Skris * On subnets, the decomposition of addresses to host and net parts 8755714Skris * is done according to subnet mask, not the masks here. 8855714Skris */ 8955714Skris#define IN_CLASSA(i) (((long)(i) & 0x80000000) == 0) 9055714Skris#define IN_CLASSA_NET 0xff000000 9155714Skris#define IN_CLASSA_NSHIFT 24 9255714Skris#define IN_CLASSA_HOST 0x00ffffff 9355714Skris#define IN_CLASSA_MAX 128 9455714Skris 9555714Skris#define IN_CLASSB(i) (((long)(i) & 0xc0000000) == 0x80000000) 9655714Skris#define IN_CLASSB_NET 0xffff0000 9755714Skris#define IN_CLASSB_NSHIFT 16 9855714Skris#define IN_CLASSB_HOST 0x0000ffff 9955714Skris#define IN_CLASSB_MAX 65536 10055714Skris 10155714Skris#define IN_CLASSC(i) (((long)(i) & 0xe0000000) == 0xc0000000) 10255714Skris#define IN_CLASSC_NET 0xffffff00 10355714Skris#define IN_CLASSC_NSHIFT 8 10455714Skris#define IN_CLASSC_HOST 0x000000ff 10555714Skris 10655714Skris#define IN_CLASSD(i) (((long)(i) & 0xf0000000) == 0xe0000000) 10755714Skris#define IN_CLASSD_NET 0xf0000000 /* These ones aren't really */ 10855714Skris#define IN_CLASSD_NSHIFT 28 /* net and host fields, but */ 10955714Skris#define IN_CLASSD_HOST 0x0fffffff /* routing needn't know. */ 11055714Skris#define IN_MULTICAST(i) IN_CLASSD(i) 11155714Skris 11255714Skris#define IN_EXPERIMENTAL(i) (((long)(i) & 0xf0000000) == 0xf0000000) 11355714Skris#define IN_BADCLASS(i) (((long)(i) & 0xf0000000) == 0xf0000000) 11455714Skris 11555714Skris#define INADDR_ANY (u_long)0x00000000 11655714Skris#define INADDR_BROADCAST (u_long)0xffffffff /* must be masked */ 11755714Skris#ifndef KERNEL 11855714Skris#define INADDR_NONE 0xffffffff /* -1 return */ 11955714Skris#endif 12055714Skris 12155714Skris#define INADDR_UNSPEC_GROUP (u_long)0xe0000000 /* 224.0.0.0 */ 12255714Skris#define INADDR_ALLHOSTS_GROUP (u_long)0xe0000001 /* 224.0.0.1 */ 12355714Skris#define INADDR_MAX_LOCAL_GROUP (u_long)0xe00000ff /* 224.0.0.255 */ 12455714Skris 12555714Skris#define IN_LOOPBACKNET 127 /* official! */ 12655714Skris 12755714Skris/* 12855714Skris * Socket address, internet style. 12955714Skris */ 13055714Skrisstruct sockaddr_in { 13155714Skris u_char sin_len; 13255714Skris u_char sin_family; 13355714Skris u_short sin_port; 13455714Skris struct in_addr sin_addr; 13555714Skris char sin_zero[8]; 13655714Skris}; 13755714Skris 13855714Skris/* 13955714Skris * Structure used to describe IP options. 14055714Skris * Used to store options internally, to pass them to a process, 14155714Skris * or to restore options retrieved earlier. 14255714Skris * The ip_dst is used for the first-hop gateway when using a source route 14355714Skris * (this gets put into the header proper). 14455714Skris */ 14555714Skrisstruct ip_opts { 14655714Skris struct in_addr ip_dst; /* first hop, 0 w/o src rt */ 14755714Skris char ip_opts[40]; /* actually variable in size */ 14855714Skris}; 14955714Skris 15055714Skris/* 15155714Skris * Options for use with [gs]etsockopt at the IP level. 15255714Skris * First word of comment is data type; bool is stored in int. 15355714Skris */ 15455714Skris#define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */ 15555714Skris#define IP_HDRINCL 2 /* int; header is included with data */ 15655714Skris#define IP_TOS 3 /* int; IP type of service and preced. */ 15755714Skris#define IP_TTL 4 /* int; IP time to live */ 15855714Skris#define IP_RECVOPTS 5 /* bool; receive all IP opts w/dgram */ 15955714Skris#define IP_RECVRETOPTS 6 /* bool; receive IP opts for response */ 16055714Skris#define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/dgram */ 16155714Skris#define IP_RETOPTS 8 /* ip_opts; set/get IP options */ 16255714Skris#define IP_MULTICAST_IF 9 /* u_char; set/get IP multicast i/f */ 16355714Skris#define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */ 16455714Skris#define IP_MULTICAST_LOOP 11 /* u_char; set/get IP multicast loopback */ 16555714Skris#define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */ 16655714Skris#define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */ 16755714Skris#define IP_MULTICAST_VIF 14 /* set/get IP mcast virt. iface */ 16855714Skris#define IP_RSVP_ON 15 /* enable RSVP in kernel */ 16955714Skris#define IP_RSVP_OFF 16 /* disable RSVP in kernel */ 17055714Skris#define IP_RSVP_VIF_ON 17 /* set RSVP per-vif socket */ 17155714Skris#define IP_RSVP_VIF_OFF 18 /* unset RSVP per-vif socket */ 17255714Skris 17355714Skris/* 17455714Skris * Defaults and limits for options 17555714Skris */ 17655714Skris#define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */ 17755714Skris#define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */ 17855714Skris#define IP_MAX_MEMBERSHIPS 20 /* per socket */ 17955714Skris 18055714Skris/* 18155714Skris * Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP. 18255714Skris */ 18355714Skrisstruct ip_mreq { 18455714Skris struct in_addr imr_multiaddr; /* IP multicast address of group */ 18555714Skris struct in_addr imr_interface; /* local IP address of interface */ 18655714Skris}; 18755714Skris 18855714Skris/* 18955714Skris * Definitions for inet sysctl operations. 19055714Skris * 19155714Skris * Third level is protocol number. 19255714Skris * Fourth level is desired variable within that protocol. 19355714Skris */ 19455714Skris#define IPPROTO_MAXID (IPPROTO_IDP + 1) /* don't list to IPPROTO_MAX */ 19555714Skris 19655714Skris#define CTL_IPPROTO_NAMES { \ 19755714Skris { "ip", CTLTYPE_NODE }, \ 19855714Skris { "icmp", CTLTYPE_NODE }, \ 19955714Skris { "igmp", CTLTYPE_NODE }, \ 20055714Skris { "ggp", CTLTYPE_NODE }, \ 20155714Skris { 0, 0 }, \ 20255714Skris { 0, 0 }, \ 20355714Skris { "tcp", CTLTYPE_NODE }, \ 20455714Skris { 0, 0 }, \ 20555714Skris { "egp", CTLTYPE_NODE }, \ 20655714Skris { 0, 0 }, \ 20755714Skris { 0, 0 }, \ 20855714Skris { 0, 0 }, \ 20955714Skris { "pup", CTLTYPE_NODE }, \ 21055714Skris { 0, 0 }, \ 21155714Skris { 0, 0 }, \ 21255714Skris { 0, 0 }, \ 21355714Skris { 0, 0 }, \ 21455714Skris { "udp", CTLTYPE_NODE }, \ 21555714Skris { 0, 0 }, \ 21655714Skris { 0, 0 }, \ 21755714Skris { 0, 0 }, \ 21855714Skris { 0, 0 }, \ 21955714Skris { "idp", CTLTYPE_NODE }, \ 22055714Skris} 22155714Skris 22255714Skris/* 22355714Skris * Names for IP sysctl objects 22455714Skris */ 22555714Skris#define IPCTL_FORWARDING 1 /* act as router */ 22655714Skris#define IPCTL_SENDREDIRECTS 2 /* may send redirects when forwarding */ 22755714Skris#define IPCTL_DEFTTL 3 /* default TTL */ 22855714Skris#ifdef notyet 22955714Skris#define IPCTL_DEFMTU 4 /* default MTU */ 23055714Skris#endif 23155714Skris#define IPCTL_RTEXPIRE 5 /* cloned route expiration time */ 23255714Skris#define IPCTL_RTMINEXPIRE 6 /* min value for expiration time */ 23355714Skris#define IPCTL_RTMAXCACHE 7 /* trigger level for dynamic expire */ 23455714Skris#define IPCTL_SOURCEROUTE 8 /* may perform source routes */ 23555714Skris#define IPCTL_DIRECTEDBROADCAST 9 /* may re-broadcast received packets */ 23655714Skris#define IPCTL_INTRQMAXLEN 10 /* max length of netisr queue */ 23755714Skris#define IPCTL_INTRQDROPS 11 /* number of netisr q drops */ 23855714Skris#define IPCTL_MAXID 12 23955714Skris 24055714Skris#define IPCTL_NAMES { \ 24155714Skris { 0, 0 }, \ 24255714Skris { "forwarding", CTLTYPE_INT }, \ 24355714Skris { "redirect", CTLTYPE_INT }, \ 24455714Skris { "ttl", CTLTYPE_INT }, \ 24555714Skris { "mtu", CTLTYPE_INT }, \ 24655714Skris { "rtexpire", CTLTYPE_INT }, \ 24755714Skris { "rtminexpire", CTLTYPE_INT }, \ 24855714Skris { "rtmaxcache", CTLTYPE_INT }, \ 24955714Skris { "sourceroute", CTLTYPE_INT }, \ 25055714Skris { "directed-broadcast", CTLTYPE_INT }, \ 25155714Skris { "intr-queue-maxlen", CTLTYPE_INT }, \ 25255714Skris { "intr-queue-drops", CTLTYPE_INT }, \ 25355714Skris} 25455714Skris 25555714Skris 25655714Skris#ifdef KERNEL 25755714Skrisstruct ifnet; struct mbuf; /* forward declarations for Standard C */ 25855714Skris 25955714Skrisint in_broadcast __P((struct in_addr, struct ifnet *)); 26055714Skrisint in_canforward __P((struct in_addr)); 26155714Skrisint in_cksum __P((struct mbuf *, int)); 26255714Skrisint in_localaddr __P((struct in_addr)); 26355714Skrisu_long in_netof __P((struct in_addr)); 26455714Skrisvoid in_socktrim __P((struct sockaddr_in *)); 26555714Skrischar *inet_ntoa __P((struct in_addr)); /* in libkern */ 26655714Skris#endif 26755714Skris 26855714Skris#endif 269 270