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ip_ecn.h revision 1.2 
      1  1.2  itojun /*
      2  1.2  itojun  * Copyright (C) 1999 WIDE Project.
      3  1.2  itojun  * All rights reserved.
      4  1.2  itojun  *
      5  1.2  itojun  * Redistribution and use in source and binary forms, with or without
      6  1.2  itojun  * modification, are permitted provided that the following conditions
      7  1.2  itojun  * are met:
      8  1.2  itojun  * 1. Redistributions of source code must retain the above copyright
      9  1.2  itojun  *    notice, this list of conditions and the following disclaimer.
     10  1.2  itojun  * 2. Redistributions in binary form must reproduce the above copyright
     11  1.2  itojun  *    notice, this list of conditions and the following disclaimer in the
     12  1.2  itojun  *    documentation and/or other materials provided with the distribution.
     13  1.2  itojun  * 3. Neither the name of the project nor the names of its contributors
     14  1.2  itojun  *    may be used to endorse or promote products derived from this software
     15  1.2  itojun  *    without specific prior written permission.
     16  1.2  itojun  *
     17  1.2  itojun  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
     18  1.2  itojun  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     19  1.2  itojun  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     20  1.2  itojun  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
     21  1.2  itojun  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     22  1.2  itojun  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     23  1.2  itojun  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     24  1.2  itojun  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     25  1.2  itojun  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     26  1.2  itojun  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     27  1.2  itojun  * SUCH DAMAGE.
     28  1.2  itojun  *
     29  1.2  itojun  * $Id: ip_ecn.h,v 1.2 1999/07/01 08:12:50 itojun Exp $
     30  1.2  itojun  */
     31  1.2  itojun /*
     32  1.2  itojun  * ECN consideration on tunnel ingress/egress operation.
     33  1.2  itojun  * http://www.aciri.org/floyd/papers/draft-ipsec-ecn-00.txt
     34  1.2  itojun  */
     35  1.2  itojun 
     36  1.2  itojun #define ECN_ALLOWED	1	/* ECN allowed */
     37  1.2  itojun #define ECN_FORBIDDEN	0	/* ECN forbidden */
     38  1.2  itojun #define ECN_NOCARE	(-1)	/* no consideration to ECN */
     39  1.2  itojun 
     40  1.2  itojun #if defined(KERNEL) || defined(_KERNEL)
     41  1.2  itojun extern void ip_ecn_ingress __P((int, u_int8_t *, u_int8_t *));
     42  1.2  itojun extern void ip_ecn_egress __P((int, u_int8_t *, u_int8_t *));
     43  1.2  itojun #ifdef INET6
     44  1.2  itojun extern void ip6_ecn_ingress __P((int, u_int32_t *, u_int32_t *));
     45  1.2  itojun extern void ip6_ecn_egress __P((int, u_int32_t *, u_int32_t *));
     46  1.2  itojun #endif
     47  1.2  itojun #endif
     48