513 lines
16 KiB
C
513 lines
16 KiB
C
/* $NetBSD: in.h,v 1.86 2009/09/14 10:36:50 degroote Exp $ */
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/*
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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. 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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/*
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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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#ifndef _NETINET_IN_H_
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#define _NETINET_IN_H_
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#include <machine/int_types.h>
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#ifndef uint8_t
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typedef __uint8_t uint8_t;
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#define uint8_t __uint8_t
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#endif
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#ifndef uint32_t
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typedef __uint32_t uint32_t;
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#define uint32_t __uint32_t
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#endif
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#include <sys/ansi.h>
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#ifndef in_addr_t
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typedef __in_addr_t in_addr_t;
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#define in_addr_t __in_addr_t
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#endif
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#ifndef in_port_t
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typedef __in_port_t in_port_t;
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#define in_port_t __in_port_t
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#endif
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#ifndef sa_family_t
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typedef __sa_family_t sa_family_t;
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#define sa_family_t __sa_family_t
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#endif
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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_HOPOPTS 0 /* IP6 hop-by-hop options */
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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_IPV4 4 /* IP header */
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#define IPPROTO_IPIP 4 /* IP inside IP */
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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_IPV6 41 /* IP6 header */
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#define IPPROTO_ROUTING 43 /* IP6 routing header */
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#define IPPROTO_FRAGMENT 44 /* IP6 fragmentation header */
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#define IPPROTO_RSVP 46 /* resource reservation */
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#define IPPROTO_GRE 47 /* GRE encaps RFC 1701 */
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#define IPPROTO_ESP 50 /* encap. security payload */
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#define IPPROTO_AH 51 /* authentication header */
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#define IPPROTO_MOBILE 55 /* IP Mobility RFC 2004 */
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#define IPPROTO_IPV6_ICMP 58 /* IPv6 ICMP */
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#define IPPROTO_ICMPV6 58 /* ICMP6 */
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#define IPPROTO_NONE 59 /* IP6 no next header */
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#define IPPROTO_DSTOPTS 60 /* IP6 destination option */
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#define IPPROTO_EON 80 /* ISO cnlp */
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#define IPPROTO_ETHERIP 97 /* Ethernet-in-IP */
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#define IPPROTO_ENCAP 98 /* encapsulation header */
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#define IPPROTO_PIM 103 /* Protocol indep. multicast */
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#define IPPROTO_IPCOMP 108 /* IP Payload Comp. Protocol */
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#define IPPROTO_VRRP 112 /* VRRP RFC 2338 */
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#define IPPROTO_CARP 112 /* Common Address Resolution Protocol */
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#define IPPROTO_PFSYNC 240 /* PFSYNC */
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#define IPPROTO_RAW 255 /* raw IP packet */
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#define IPPROTO_MAX 256
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/* last return value of *_input(), meaning "all job for this pkt is done". */
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#define IPPROTO_DONE 257
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/* sysctl placeholder for (FAST_)IPSEC */
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#define CTL_IPPROTO_IPSEC 258
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/*
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* Local port number conventions:
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*
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* Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root),
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* unless a kernel is compiled with IPNOPRIVPORTS defined.
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*
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* When a user does a bind(2) or connect(2) with a port number of zero,
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* a non-conflicting local port address is chosen.
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*
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* The default range is IPPORT_ANONMIN to IPPORT_ANONMAX, although
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* that is settable by sysctl(3); net.inet.ip.anonportmin and
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* net.inet.ip.anonportmax respectively.
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*
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* A user may set the IPPROTO_IP option IP_PORTRANGE to change this
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* default assignment range.
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*
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* The value IP_PORTRANGE_DEFAULT causes the default behavior.
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*
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* The value IP_PORTRANGE_HIGH is the same as IP_PORTRANGE_DEFAULT,
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* and exists only for FreeBSD compatibility purposes.
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*
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* The value IP_PORTRANGE_LOW changes the range to the "low" are
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* that is (by convention) restricted to privileged processes.
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* This convention is based on "vouchsafe" principles only.
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* It is only secure if you trust the remote host to restrict these ports.
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* The range is IPPORT_RESERVEDMIN to IPPORT_RESERVEDMAX.
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*/
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#define IPPORT_RESERVED 1024
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#define IPPORT_ANONMIN 49152
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#define IPPORT_ANONMAX 65535
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#define IPPORT_RESERVEDMIN 600
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#define IPPORT_RESERVEDMAX (IPPORT_RESERVED-1)
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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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} __packed;
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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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* By byte-swapping the constants, we avoid ever having to byte-swap IP
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* addresses inside the kernel. Unfortunately, user-level programs rely
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* on these macros not doing byte-swapping.
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*/
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#ifdef _KERNEL
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#define __IPADDR(x) ((uint32_t) htonl((uint32_t)(x)))
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#else
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#define __IPADDR(x) ((uint32_t)(x))
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#endif
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#define IN_CLASSA(i) (((uint32_t)(i) & __IPADDR(0x80000000)) == \
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__IPADDR(0x00000000))
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#define IN_CLASSA_NET __IPADDR(0xff000000)
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#define IN_CLASSA_NSHIFT 24
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#define IN_CLASSA_HOST __IPADDR(0x00ffffff)
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#define IN_CLASSA_MAX 128
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#define IN_CLASSB(i) (((uint32_t)(i) & __IPADDR(0xc0000000)) == \
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__IPADDR(0x80000000))
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#define IN_CLASSB_NET __IPADDR(0xffff0000)
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#define IN_CLASSB_NSHIFT 16
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#define IN_CLASSB_HOST __IPADDR(0x0000ffff)
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#define IN_CLASSB_MAX 65536
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#define IN_CLASSC(i) (((uint32_t)(i) & __IPADDR(0xe0000000)) == \
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__IPADDR(0xc0000000))
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#define IN_CLASSC_NET __IPADDR(0xffffff00)
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#define IN_CLASSC_NSHIFT 8
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#define IN_CLASSC_HOST __IPADDR(0x000000ff)
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#define IN_CLASSD(i) (((uint32_t)(i) & __IPADDR(0xf0000000)) == \
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__IPADDR(0xe0000000))
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/* These ones aren't really net and host fields, but routing needn't know. */
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#define IN_CLASSD_NET __IPADDR(0xf0000000)
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#define IN_CLASSD_NSHIFT 28
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#define IN_CLASSD_HOST __IPADDR(0x0fffffff)
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#define IN_MULTICAST(i) IN_CLASSD(i)
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#define IN_EXPERIMENTAL(i) (((uint32_t)(i) & __IPADDR(0xf0000000)) == \
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__IPADDR(0xf0000000))
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#define IN_BADCLASS(i) (((uint32_t)(i) & __IPADDR(0xf0000000)) == \
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__IPADDR(0xf0000000))
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#define IN_LINKLOCAL(i) (((uint32_t)(i) & __IPADDR(0xffff0000)) == \
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__IPADDR(0xa9fe0000))
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#define IN_PRIVATE(i) ((((uint32_t)(i) & __IPADDR(0xff000000)) == \
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__IPADDR(0x0a000000)) || \
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(((uint32_t)(i) & __IPADDR(0xfff00000)) == \
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__IPADDR(0xac100000)) || \
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(((uint32_t)(i) & __IPADDR(0xffff0000)) == \
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__IPADDR(0xc0a80000)))
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#define IN_LOCAL_GROUP(i) (((uint32_t)(i) & __IPADDR(0xffffff00)) == \
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__IPADDR(0xe0000000))
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#define IN_ANY_LOCAL(i) (IN_LINKLOCAL(i) || IN_LOCAL_GROUP(i))
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#define INADDR_ANY __IPADDR(0x00000000)
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#define INADDR_LOOPBACK __IPADDR(0x7f000001)
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#define INADDR_BROADCAST __IPADDR(0xffffffff) /* must be masked */
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#define INADDR_NONE __IPADDR(0xffffffff) /* -1 return */
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#define INADDR_UNSPEC_GROUP __IPADDR(0xe0000000) /* 224.0.0.0 */
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#define INADDR_ALLHOSTS_GROUP __IPADDR(0xe0000001) /* 224.0.0.1 */
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#define INADDR_ALLRTRS_GROUP __IPADDR(0xe0000002) /* 224.0.0.2 */
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#define INADDR_CARP_GROUP __IPADDR(0xe0000012) /* 224.0.0.18 */
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#define INADDR_MAX_LOCAL_GROUP __IPADDR(0xe00000ff) /* 224.0.0.255 */
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#define IN_LOOPBACKNET 127 /* official! */
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/*
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* Socket address, internet style.
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*/
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#ifdef __minix
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struct sockaddr_in
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{
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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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};
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#else /* !__minix */
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struct sockaddr_in {
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uint8_t sin_len;
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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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__int8_t sin_zero[8];
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};
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#endif /* !__minix */
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#define INET_ADDRSTRLEN 16
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#ifndef __minix
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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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struct ip_opts {
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struct in_addr ip_dst; /* first hop, 0 w/o src rt */
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#if defined(__cplusplus)
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__int8_t Ip_opts[40]; /* actually variable in size */
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#else
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__int8_t ip_opts[40]; /* actually variable in size */
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#endif
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};
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#endif /* __minix */
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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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#ifndef __minix
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#define IP_OPTIONS 1 /* buf/ip_opts; set/get IP options */
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#define IP_HDRINCL 2 /* int; header is included with data */
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#define IP_TOS 3 /* int; IP type of service and preced. */
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#define IP_TTL 4 /* int; IP time to live */
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#define IP_RECVOPTS 5 /* bool; receive all IP opts w/dgram */
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#define IP_RECVRETOPTS 6 /* bool; receive IP opts for response */
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#define IP_RECVDSTADDR 7 /* bool; receive IP dst addr w/dgram */
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#define IP_RETOPTS 8 /* ip_opts; set/get IP options */
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#define IP_MULTICAST_IF 9 /* in_addr; set/get IP multicast i/f */
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#define IP_MULTICAST_TTL 10 /* u_char; set/get IP multicast ttl */
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#define IP_MULTICAST_LOOP 11 /* u_char; set/get IP multicast loopback */
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#endif /* !__minix */
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#define IP_ADD_MEMBERSHIP 12 /* ip_mreq; add an IP group membership */
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#define IP_DROP_MEMBERSHIP 13 /* ip_mreq; drop an IP group membership */
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#ifndef __minix
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#define IP_PORTRANGE 19 /* int; range to use for ephemeral port */
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#define IP_RECVIF 20 /* bool; receive reception if w/dgram */
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#define IP_ERRORMTU 21 /* int; get MTU of last xmit = EMSGSIZE */
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#if 1 /*IPSEC*/
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#define IP_IPSEC_POLICY 22 /* struct; get/set security policy */
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#endif
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#define IP_RECVTTL 23 /* bool; receive IP TTL w/dgram */
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#define IP_MINTTL 24 /* minimum TTL for packet or drop */
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#endif /* !__minix */
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#ifndef __minix
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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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#endif /* !__minix */
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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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#ifndef __minix
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/*
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* Argument for IP_PORTRANGE:
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* - which range to search when port is unspecified at bind() or connect()
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*/
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#define IP_PORTRANGE_DEFAULT 0 /* default range */
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#define IP_PORTRANGE_HIGH 1 /* same as DEFAULT (FreeBSD compat) */
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#define IP_PORTRANGE_LOW 2 /* use privileged range */
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#if defined(_NETBSD_SOURCE)
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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_AH + 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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{ 0, 0 }, \
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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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{ 0, 0 }, \
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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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{ 0, 0 }, \
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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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{ 0, 0 }, \
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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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{ 0, 0 }, \
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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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{ 0, 0 }, \
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{ 0, 0 }, \
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{ 0, 0 }, \
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{ "ipsec", 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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{ 0, 0 }, \
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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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{ 0, 0 }, \
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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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{ 0, 0 }, \
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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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{ 0, 0 }, \
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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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{ 0, 0 }, \
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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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{ 0, 0 }, \
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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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{ 0, 0 }, \
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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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{ 0, 0 }, \
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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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{ 0, 0 }, \
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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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{ 0, 0 }, \
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{ 0, 0 }, \
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{ "pim", 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_FORWSRCRT 5 /* forward source-routed packets */
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#define IPCTL_DIRECTEDBCAST 6 /* default broadcast behavior */
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#define IPCTL_ALLOWSRCRT 7 /* allow/drop all source-routed pkts */
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#define IPCTL_SUBNETSARELOCAL 8 /* treat subnets as local addresses */
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#define IPCTL_MTUDISC 9 /* allow path MTU discovery */
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#define IPCTL_ANONPORTMIN 10 /* minimum ephemeral port */
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#define IPCTL_ANONPORTMAX 11 /* maximum ephemeral port */
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#define IPCTL_MTUDISCTIMEOUT 12 /* allow path MTU discovery */
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#define IPCTL_MAXFLOWS 13 /* maximum ip flows allowed */
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#define IPCTL_HOSTZEROBROADCAST 14 /* is host zero a broadcast addr? */
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#define IPCTL_GIF_TTL 15 /* default TTL for gif encap packet */
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#define IPCTL_LOWPORTMIN 16 /* minimum reserved port */
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|
#define IPCTL_LOWPORTMAX 17 /* maximum reserved port */
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#define IPCTL_MAXFRAGPACKETS 18 /* max packets reassembly queue */
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#define IPCTL_GRE_TTL 19 /* default TTL for gre encap packet */
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#define IPCTL_CHECKINTERFACE 20 /* drop pkts in from 'wrong' iface */
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|
#define IPCTL_IFQ 21 /* ipintrq node */
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|
#define IPCTL_RANDOMID 22 /* use random IP ids (if configured) */
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|
#define IPCTL_LOOPBACKCKSUM 23 /* do IP checksum on loopback */
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|
#define IPCTL_STATS 24 /* IP statistics */
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|
#define IPCTL_MAXID 25
|
|
|
|
#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 }, \
|
|
{ "mtu", CTLTYPE_INT }, \
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|
{ "forwsrcrt", CTLTYPE_INT }, \
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|
{ "directed-broadcast", CTLTYPE_INT }, \
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|
{ "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 */
|
|
#endif /* __minix */
|
|
|
|
/* INET6 stuff */
|
|
#define __KAME_NETINET_IN_H_INCLUDED_
|
|
#include <netinet6/in6.h>
|
|
#undef __KAME_NETINET_IN_H_INCLUDED_
|
|
|
|
#endif /* !_NETINET_IN_H_ */
|