284 lines
9.5 KiB
C
284 lines
9.5 KiB
C
/* $NetBSD: in.h,v 1.26 1997/10/14 00:52:39 matt Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1982, 1986, 1990, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)in.h 8.3 (Berkeley) 1/3/94
|
|
*/
|
|
|
|
/*
|
|
* Constants and structures defined by the internet system,
|
|
* Per RFC 790, September 1981, and numerous additions.
|
|
*/
|
|
|
|
#ifndef _NETINET_IN_H_
|
|
#define _NETINET_IN_H_
|
|
|
|
/*
|
|
* Protocols
|
|
*/
|
|
#define IPPROTO_IP 0 /* dummy for IP */
|
|
#define IPPROTO_ICMP 1 /* control message protocol */
|
|
#define IPPROTO_IGMP 2 /* group mgmt protocol */
|
|
#define IPPROTO_GGP 3 /* gateway^2 (deprecated) */
|
|
#define IPPROTO_IPIP 4 /* IP inside IP */
|
|
#define IPPROTO_TCP 6 /* tcp */
|
|
#define IPPROTO_EGP 8 /* exterior gateway protocol */
|
|
#define IPPROTO_PUP 12 /* pup */
|
|
#define IPPROTO_UDP 17 /* user datagram protocol */
|
|
#define IPPROTO_IDP 22 /* xns idp */
|
|
#define IPPROTO_TP 29 /* tp-4 w/ class negotiation */
|
|
#define IPPROTO_ESP 50 /* encap. security payload */
|
|
#define IPPROTO_AH 51 /* authentication header */
|
|
#define IPPROTO_EON 80 /* ISO cnlp */
|
|
#define IPPROTO_ENCAP 98 /* encapsulation header */
|
|
|
|
#define IPPROTO_RAW 255 /* raw IP packet */
|
|
#define IPPROTO_MAX 256
|
|
|
|
|
|
/*
|
|
* Local port number conventions:
|
|
* Ports < IPPORT_RESERVED are reserved for
|
|
* privileged processes (e.g. root).
|
|
* Ports > IPPORT_USERRESERVED are reserved
|
|
* for servers, not necessarily privileged.
|
|
*/
|
|
#define IPPORT_RESERVED 1024
|
|
#define IPPORT_USERRESERVED 5000
|
|
|
|
/*
|
|
* Internet address (a structure for historical reasons)
|
|
*/
|
|
struct in_addr {
|
|
u_int32_t s_addr;
|
|
};
|
|
|
|
/*
|
|
* Definitions of bits in internet address integers.
|
|
* On subnets, the decomposition of addresses to host and net parts
|
|
* is done according to subnet mask, not the masks here.
|
|
*
|
|
* By byte-swapping the constants, we avoid ever having to byte-swap IP
|
|
* addresses inside the kernel. Unfortunately, user-level programs rely
|
|
* on these macros not doing byte-swapping.
|
|
*/
|
|
#ifdef _KERNEL
|
|
#define __IPADDR(x) ((u_int32_t) htonl((u_int32_t)(x)))
|
|
#else
|
|
#define __IPADDR(x) ((u_int32_t)(x))
|
|
#endif
|
|
|
|
#define IN_CLASSA(i) (((u_int32_t)(i) & __IPADDR(0x80000000)) == \
|
|
__IPADDR(0x00000000))
|
|
#define IN_CLASSA_NET __IPADDR(0xff000000)
|
|
#define IN_CLASSA_NSHIFT 24
|
|
#define IN_CLASSA_HOST __IPADDR(0x00ffffff)
|
|
#define IN_CLASSA_MAX 128
|
|
|
|
#define IN_CLASSB(i) (((u_int32_t)(i) & __IPADDR(0xc0000000)) == \
|
|
__IPADDR(0x80000000))
|
|
#define IN_CLASSB_NET __IPADDR(0xffff0000)
|
|
#define IN_CLASSB_NSHIFT 16
|
|
#define IN_CLASSB_HOST __IPADDR(0x0000ffff)
|
|
#define IN_CLASSB_MAX 65536
|
|
|
|
#define IN_CLASSC(i) (((u_int32_t)(i) & __IPADDR(0xe0000000)) == \
|
|
__IPADDR(0xc0000000))
|
|
#define IN_CLASSC_NET __IPADDR(0xffffff00)
|
|
#define IN_CLASSC_NSHIFT 8
|
|
#define IN_CLASSC_HOST __IPADDR(0x000000ff)
|
|
|
|
#define IN_CLASSD(i) (((u_int32_t)(i) & __IPADDR(0xf0000000)) == \
|
|
__IPADDR(0xe0000000))
|
|
/* These ones aren't really net and host fields, but routing needn't know. */
|
|
#define IN_CLASSD_NET __IPADDR(0xf0000000)
|
|
#define IN_CLASSD_NSHIFT 28
|
|
#define IN_CLASSD_HOST __IPADDR(0x0fffffff)
|
|
#define IN_MULTICAST(i) IN_CLASSD(i)
|
|
|
|
#define IN_EXPERIMENTAL(i) (((u_int32_t)(i) & __IPADDR(0xf0000000)) == \
|
|
__IPADDR(0xf0000000))
|
|
#define IN_BADCLASS(i) (((u_int32_t)(i) & __IPADDR(0xf0000000)) == \
|
|
__IPADDR(0xf0000000))
|
|
|
|
#define IN_LOCAL_GROUP(i) (((u_int32_t)(i) & __IPADDR(0xffffff00)) == \
|
|
__IPADDR(0xe0000000))
|
|
|
|
#define INADDR_ANY __IPADDR(0x00000000)
|
|
#define INADDR_LOOPBACK __IPADDR(0x7f000001)
|
|
#define INADDR_BROADCAST __IPADDR(0xffffffff) /* must be masked */
|
|
#ifndef _KERNEL
|
|
#define INADDR_NONE __IPADDR(0xffffffff) /* -1 return */
|
|
#endif
|
|
|
|
#define INADDR_UNSPEC_GROUP __IPADDR(0xe0000000) /* 224.0.0.0 */
|
|
#define INADDR_ALLHOSTS_GROUP __IPADDR(0xe0000001) /* 224.0.0.1 */
|
|
|
|
#define IN_LOOPBACKNET 127 /* official! */
|
|
|
|
/*
|
|
* Socket address, internet style.
|
|
*/
|
|
struct sockaddr_in {
|
|
u_int8_t sin_len;
|
|
u_int8_t sin_family;
|
|
u_int16_t sin_port;
|
|
struct in_addr sin_addr;
|
|
int8_t sin_zero[8];
|
|
};
|
|
|
|
/*
|
|
* Structure used to describe IP options.
|
|
* Used to store options internally, to pass them to a process,
|
|
* or to restore options retrieved earlier.
|
|
* The ip_dst is used for the first-hop gateway when using a source route
|
|
* (this gets put into the header proper).
|
|
*/
|
|
struct ip_opts {
|
|
struct in_addr ip_dst; /* first hop, 0 w/o src rt */
|
|
int8_t ip_opts[40]; /* actually variable in size */
|
|
};
|
|
|
|
/*
|
|
* Options for use with [gs]etsockopt at the IP level.
|
|
* First word of comment is data type; bool is stored in int.
|
|
*/
|
|
#define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */
|
|
#define IP_HDRINCL 2 /* int; header is included with data */
|
|
#define IP_TOS 3 /* int; IP type of service and preced. */
|
|
#define IP_TTL 4 /* int; IP time to live */
|
|
#define IP_RECVOPTS 5 /* bool; receive all IP opts w/dgram */
|
|
#define IP_RECVRETOPTS 6 /* bool; receive IP opts for response */
|
|
#define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/dgram */
|
|
#define IP_RETOPTS 8 /* ip_opts; set/get IP options */
|
|
#define IP_MULTICAST_IF 9 /* in_addr; set/get IP multicast i/f */
|
|
#define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */
|
|
#define IP_MULTICAST_LOOP 11 /* u_char; set/get IP multicast loopback */
|
|
#define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */
|
|
#define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */
|
|
#define IP_RECVIF 20 /* bool; receive reception if w/dgram */
|
|
#define IP_ERRORMTU 21 /* int; get MTU of last xmit = EMSGSIZE */
|
|
|
|
/*
|
|
* Defaults and limits for options
|
|
*/
|
|
#define IP_DEFAULT_MULTICAST_TTL 1 /* normally limit m'casts to 1 hop */
|
|
#define IP_DEFAULT_MULTICAST_LOOP 1 /* normally hear sends if a member */
|
|
#define IP_MAX_MEMBERSHIPS 20 /* per socket; must fit in one mbuf */
|
|
|
|
/*
|
|
* Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
|
|
*/
|
|
struct ip_mreq {
|
|
struct in_addr imr_multiaddr; /* IP multicast address of group */
|
|
struct in_addr imr_interface; /* local IP address of interface */
|
|
};
|
|
|
|
/*
|
|
* Definitions for inet sysctl operations.
|
|
*
|
|
* Third level is protocol number.
|
|
* Fourth level is desired variable within that protocol.
|
|
*/
|
|
#define IPPROTO_MAXID (IPPROTO_IDP + 1) /* don't list to IPPROTO_MAX */
|
|
|
|
#define CTL_IPPROTO_NAMES { \
|
|
{ "ip", CTLTYPE_NODE }, \
|
|
{ "icmp", CTLTYPE_NODE }, \
|
|
{ "igmp", CTLTYPE_NODE }, \
|
|
{ "ggp", CTLTYPE_NODE }, \
|
|
{ 0, 0 }, \
|
|
{ 0, 0 }, \
|
|
{ "tcp", CTLTYPE_NODE }, \
|
|
{ 0, 0 }, \
|
|
{ "egp", CTLTYPE_NODE }, \
|
|
{ 0, 0 }, \
|
|
{ 0, 0 }, \
|
|
{ 0, 0 }, \
|
|
{ "pup", CTLTYPE_NODE }, \
|
|
{ 0, 0 }, \
|
|
{ 0, 0 }, \
|
|
{ 0, 0 }, \
|
|
{ 0, 0 }, \
|
|
{ "udp", CTLTYPE_NODE }, \
|
|
{ 0, 0 }, \
|
|
{ 0, 0 }, \
|
|
{ 0, 0 }, \
|
|
{ 0, 0 }, \
|
|
{ "idp", CTLTYPE_NODE }, \
|
|
}
|
|
|
|
/*
|
|
* Names for IP sysctl objects
|
|
*/
|
|
#define IPCTL_FORWARDING 1 /* act as router */
|
|
#define IPCTL_SENDREDIRECTS 2 /* may send redirects when forwarding */
|
|
#define IPCTL_DEFTTL 3 /* default TTL */
|
|
#ifdef notyet
|
|
#define IPCTL_DEFMTU 4 /* default MTU */
|
|
#endif
|
|
#define IPCTL_FORWSRCRT 5 /* forward source-routed packets */
|
|
#define IPCTL_DIRECTEDBCAST 6 /* default broadcast behavior */
|
|
#define IPCTL_ALLOWSRCRT 7 /* allow/drop all source-routed pkts */
|
|
#define IPCTL_MAXID 8
|
|
|
|
#define IPCTL_NAMES { \
|
|
{ 0, 0 }, \
|
|
{ "forwarding", CTLTYPE_INT }, \
|
|
{ "redirect", CTLTYPE_INT }, \
|
|
{ "ttl", CTLTYPE_INT }, \
|
|
{ "mtu", CTLTYPE_INT }, \
|
|
{ "forwsrcrt", CTLTYPE_INT }, \
|
|
{ "directed-broadcast", CTLTYPE_INT }, \
|
|
{ "allowsrcrt", CTLTYPE_INT }, \
|
|
}
|
|
|
|
|
|
#ifdef _KERNEL
|
|
extern struct in_addr zeroin_addr;
|
|
|
|
int in_broadcast __P((struct in_addr, struct ifnet *));
|
|
int in_canforward __P((struct in_addr));
|
|
int in_cksum __P((struct mbuf *, int));
|
|
int in_localaddr __P((struct in_addr));
|
|
void in_socktrim __P((struct sockaddr_in *));
|
|
|
|
#define in_hosteq(s,t) ((s).s_addr == (t).s_addr)
|
|
#define in_nullhost(x) ((x).s_addr == INADDR_ANY)
|
|
|
|
#define satosin(sa) ((struct sockaddr_in *)(sa))
|
|
#define sintosa(sin) ((struct sockaddr *)(sin))
|
|
#define ifatoia(ifa) ((struct in_ifaddr *)(ifa))
|
|
#endif
|
|
#endif /* !_NETINET_IN_H_ */
|