NetBSD/sys/net/if_etherip.h

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/* $NetBSD: if_etherip.h,v 1.10 2008/11/12 12:36:28 ad Exp $ */
/*
* Copyright (c) 2006, Hans Rosenfeld <rosenfeld@grumpf.hope-2000.org>
* 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. Neither the name of Hans Rosenfeld nor the names of his
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*/
#ifndef _NET_IF_ETHERIP_H_
#define _NET_IF_ETHERIP_H_
#include <sys/queue.h>
#ifdef _KERNEL_OPT
#include "opt_inet.h"
#endif
#include <netinet/in.h>
struct etherip_softc {
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struct ifmedia sc_im;
device_t sc_dev;
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struct ethercom sc_ec;
struct sockaddr *sc_src; /* tunnel source address */
struct sockaddr *sc_dst; /* tunnel destination address */
struct route sc_ro; /* cached inet route */
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void *sc_si; /* softintr handle */
LIST_ENTRY(etherip_softc) etherip_list; /* list of etherip tunnels */
};
LIST_HEAD(, etherip_softc) etherip_softc_list;
struct etherip_header {
uint8_t eip_ver; /* version/reserved */
uint8_t eip_pad; /* required padding byte */
};
#define ETHERIP_VER_VERS_MASK 0x0f
#define ETHERIP_VER_RSVD_MASK 0xf0
#define ETHERIP_VERSION 0x03
#define ETHERIP_TTL 30
#define ETHERIP_ROUTE_TTL 10
#endif /* !_NET_IF_ETHERIP_H_ */