in.h revision 4fd606d1f5abe38e1f42c38de1d2e895166bd0f4
/* $NetBSD: in.h,v 1.77 2006/11/13 05:13:41 dyoung 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
* 3. 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_
#include <machine/int_types.h>
#ifndef uint8_t
#endif
#ifndef uint32_t
typedef __uint32_t uint32_t;
#define uint32_t __uint32_t
#endif
#ifndef in_addr_t
typedef __in_addr_t in_addr_t;
#define in_addr_t __in_addr_t
#endif
#ifndef in_port_t
typedef __in_port_t in_port_t;
#define in_port_t __in_port_t
#endif
#ifndef sa_family_t
typedef __sa_family_t sa_family_t;
#define sa_family_t __sa_family_t
#endif
/*
* Protocols
*/
#define IPPROTO_IP 0 /* dummy for IP */
#define IPPROTO_HOPOPTS 0 /* IP6 hop-by-hop options */
#define IPPROTO_MAX 256
/* last return value of *_input(), meaning "all job for this pkt is done". */
#define IPPROTO_DONE 257
/* sysctl placeholder for (FAST_)IPSEC */
#define CTL_IPPROTO_IPSEC 258
/*
* Local port number conventions:
*
* Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
* unless a kernel is compiled with IPNOPRIVPORTS defined.
*
* When a user does a bind(2) or connect(2) with a port number of zero,
* a non-conflicting local port address is chosen.
*
* The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
* that is settable by sysctl(3); net.inet.ip.anonportmin and
* net.inet.ip.anonportmax respectively.
*
* A user may set the IPPROTO_IP option IP_PORTRANGE to change this
* default assignment range.
*
* The value IP_PORTRANGE_DEFAULT causes the default behavior.
*
* The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
* and exists only for FreeBSD compatibility purposes.
*
* The value IP_PORTRANGE_LOW changes the range to the "low" are
* that is (by convention) restricted to privileged processes.
* This convention is based on "vouchsafe" principles only.
* It is only secure if you trust the remote host to restrict these ports.
* The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
*/
#define IPPORT_RESERVED 1024
#define IPPORT_ANONMIN 49152
#define IPPORT_ANONMAX 65535
#define IPPORT_RESERVEDMIN 600
/*
* Internet address (a structure for historical reasons)
*/
struct in_addr {
} __attribute__((__packed__));
/*
* 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
#else
#endif
__IPADDR(0x00000000))
#define IN_CLASSA_NSHIFT 24
#define IN_CLASSA_MAX 128
__IPADDR(0x80000000))
#define IN_CLASSB_NSHIFT 16
#define IN_CLASSB_MAX 65536
__IPADDR(0xc0000000))
#define IN_CLASSC_NSHIFT 8
__IPADDR(0xe0000000))
/* These ones aren't really net and host fields, but routing needn't know. */
#define IN_CLASSD_NSHIFT 28
#define IN_MULTICAST(i) IN_CLASSD(i)
__IPADDR(0xf0000000))
__IPADDR(0xf0000000))
__IPADDR(0xa9fe0000))
__IPADDR(0x0a000000)) || \
__IPADDR(0xac100000)) || \
__IPADDR(0xc0a80000)))
__IPADDR(0xe0000000))
/*
* Socket address, internet style.
*/
struct sockaddr_in {
};
#define INET_ADDRSTRLEN 16
/*
* 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 {
#if defined(__cplusplus)
#else
#endif
};
/*
* Options for use with [gs]etsockopt at the IP level.
* First word of comment is data type; bool is stored in int.
*/
#if 1 /*IPSEC*/
#endif
/*
* Defaults and limits for options
*/
/*
* Argument structure for IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP.
*/
struct ip_mreq {
};
/*
* Argument for IP_PORTRANGE:
* - which range to search when port is unspecified at bind() or connect()
*/
#define IP_PORTRANGE_DEFAULT 0 /* default range */
#if defined(_NETBSD_SOURCE)
/*
* Definitions for inet sysctl operations.
*
* Third level is protocol number.
* Fourth level is desired variable within that protocol.
*/
#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 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ "ipsec", CTLTYPE_NODE }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ 0, 0 }, \
{ "pim", CTLTYPE_NODE }, \
}
/*
* Names for IP sysctl objects
*/
#ifdef notyet
#endif
#define IPCTL_MAXID 25
#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 }, \
{ "subnetsarelocal", CTLTYPE_INT }, \
{ "mtudisc", CTLTYPE_INT }, \
{ "anonportmin", CTLTYPE_INT }, \
{ "anonportmax", CTLTYPE_INT }, \
{ "mtudisctimeout", CTLTYPE_INT }, \
{ "maxflows", CTLTYPE_INT }, \
{ "hostzerobroadcast", CTLTYPE_INT }, \
{ "gifttl", CTLTYPE_INT }, \
{ "lowportmin", CTLTYPE_INT }, \
{ "lowportmax", CTLTYPE_INT }, \
{ "maxfragpackets", CTLTYPE_INT }, \
{ "grettl", CTLTYPE_INT }, \
{ "checkinterface", CTLTYPE_INT }, \
{ "ifq", CTLTYPE_NODE }, \
{ "random_id", CTLTYPE_INT }, \
{ "do_loopback_cksum", CTLTYPE_INT }, \
{ "stats", CTLTYPE_STRUCT }, \
}
#endif /* _NETBSD_SOURCE */
/* INET6 stuff */
#define __KAME_NETINET_IN_H_INCLUDED_
#ifdef _KERNEL
/*
* in_cksum_phdr:
*
* Compute significant parts of the IPv4 checksum pseudo-header
*
* Args:
*
* src Source IP address
* dst Destination IP address
* lenproto htons(proto-hdr-len + proto-number)
*/
{
if (sum > 0xffff)
sum -= 0xffff;
return (sum);
}
/*
* in_cksum_addword:
*
* Add the two 16-bit network-order values, carry, and return.
*/
{
if (sum > 0xffff)
sum -= 0xffff;
return (sum);
}
extern struct in_addr zeroin_addr;
int in_canforward(struct in_addr);
void in_delayed_cksum(struct mbuf *);
int in_localaddr(struct in_addr);
void in_socktrim(struct sockaddr_in *);
#endif /* _KERNEL */
#endif /* !_NETINET_IN_H_ */