The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/net/if_etherip.h

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    1 /*      $NetBSD: if_etherip.h,v 1.1 2006/11/23 04:07:07 rpaulo 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 #if defined(_KERNEL) && !defined(_LKM)
   38 #include "opt_inet.h"
   39 #endif
   40 
   41 #include <netinet/in.h>
   42 
   43 LIST_HEAD(, etherip_softc) etherip_softc_list;
   44 
   45 struct etherip_softc {
   46         struct device   sc_dev;
   47         struct ifmedia  sc_im;
   48         struct ethercom sc_ec;
   49         struct sockaddr *sc_src;                /* tunnel source address      */
   50         struct sockaddr *sc_dst;                /* tunnel destination address */
   51         union {
   52 #ifdef INET
   53                 struct route     scr_ro;        /* cached inet route          */
   54 #endif
   55 #ifdef INET6
   56                 struct route_in6 scr_ro6;       /* cached inet6 route         */
   57 #endif
   58         } sc_scr;
   59         long sc_route_expire;
   60 #ifdef __HAVE_GENERIC_SOFT_INTERRUPTS
   61         void *sc_si;                            /* softintr handle            */
   62 #endif
   63         LIST_ENTRY(etherip_softc) etherip_list; /* list of etherip tunnels    */
   64 };
   65 #define sc_ro  sc_scr.scr_ro
   66 #define sc_ro6 sc_scr.scr_ro6
   67 
   68 struct etherip_header {
   69         u_int8_t eip_ver;       /* version/reserved */
   70         u_int8_t eip_pad;       /* required padding byte */
   71 };
   72 
   73 #define ETHERIP_VER_VERS_MASK   0x0f
   74 #define ETHERIP_VER_RSVD_MASK   0xf0
   75 #define ETHERIP_VERSION         0x03
   76 
   77 #define ETHERIP_TTL 30
   78 #define ETHERIP_ROUTE_TTL 10
   79 
   80 #endif /* !_NET_IF_ETHERIP_H_ */

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