sys/net/if_etherip.h

   1 /*      $NetBSD: if_etherip.h,v 1.9 2008/10/24 21:41:04 dyoung Exp $        */
   2
   3 /*
   4  *  Copyright (c) 2006, Hans Rosenfeld <rosenfeld@grumpf.hope-2000.org>
   5  *  All rights reserved.
   6  *
   7  *  Redistribution and use in source and binary forms, with or without
   8  *  modification, are permitted provided that the following conditions
   9  *  are met:
  10  *  1. Redistributions of source code must retain the above copyright
  11  *     notice, this list of conditions and the following disclaimer.
  12  *  2. Redistributions in binary form must reproduce the above copyright
  13  *     notice, this list of conditions and the following disclaimer in the
  14  *     documentation and/or other materials provided with the distribution.
  15  *  3. Neither the name of Hans Rosenfeld nor the names of his
  16  *     contributors may be used to endorse or promote products derived
  17  *     from this software without specific prior written permission.
  18  *
  19  *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  20  *  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  *  ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  23  *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  *  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  *  OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  *  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  *  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  *  OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  *  SUCH DAMAGE.
  30  */
  31
  32 #ifndef _NET_IF_ETHERIP_H_
  33 #define _NET_IF_ETHERIP_H_
  34
  35 #include <sys/queue.h>
  36
  37 #ifdef _KERNEL_OPT
  38 #include "opt_inet.h"
  39 #endif
  40
  41 #include <netinet/in.h>
  42
  43 struct etherip_softc {
  44         struct ifmedia  sc_im;
  45         device_t        sc_dev;
  46         struct ethercom sc_ec;
  47         struct sockaddr *sc_src;                /* tunnel source address      */
  48         struct sockaddr *sc_dst;                /* tunnel destination address */
  49         struct route     sc_ro;                 /* cached inet route          */
  50         void *sc_si;                            /* softintr handle            */
  51         LIST_ENTRY(etherip_softc) etherip_list; /* list of etherip tunnels    */
  52 };
  53
  54 LIST_HEAD(, etherip_softc) etherip_softc_list;
  55
  56 struct etherip_header {
  57         uint8_t eip_ver;       /* version/reserved */
  58         uint8_t eip_pad;       /* required padding byte */
  59 };
  60
  61 #define ETHERIP_VER_VERS_MASK   0x0f
  62 #define ETHERIP_VER_RSVD_MASK   0xf0
  63 #define ETHERIP_VERSION         0x03
  64
  65 #define ETHERIP_TTL 30
  66 #define ETHERIP_ROUTE_TTL 10
  67
  68 #endif /* !_NET_IF_ETHERIP_H_ */