1 /* $NetBSD: ip_ecn.h,v 1.7 1999/12/12 16:19:40 itojun Exp $ */ 2 3 /* 4 * Copyright (C) 1999 WIDE Project. 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 the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT 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 PROJECT 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 * KAME Id: ip_ecn.h,v 1.2 1999/08/19 12:57:44 itojun Exp 32 */ 33 /* 34 * ECN consideration on tunnel ingress/egress operation. 35 * http://www.aciri.org/floyd/papers/draft-ipsec-ecn-00.txt 36 */ 37 38 #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__NetBSD__) 39 #if defined(_KERNEL) && !defined(_LKM) 40 #include "opt_inet.h" 41 #endif 42 #endif 43 44 #define ECN_ALLOWED 1 /* ECN allowed */ 45 #define ECN_FORBIDDEN 0 /* ECN forbidden */ 46 #define ECN_NOCARE (-1) /* no consideration to ECN */ 47 48 #if defined(KERNEL) || defined(_KERNEL) 49 extern void ip_ecn_ingress __P((int, u_int8_t *, u_int8_t *)); 50 extern void ip_ecn_egress __P((int, u_int8_t *, u_int8_t *)); 51 #ifdef INET6 52 extern void ip6_ecn_ingress __P((int, u_int32_t *, u_int32_t *)); 53 extern void ip6_ecn_egress __P((int, u_int32_t *, u_int32_t *)); 54 #endif 55 #endif 56