1 /* $FreeBSD: src/sys/netinet/ip_ecn.h,v 1.2.2.2 2001/07/03 11:01:46 ume Exp $ */ 2 /* $DragonFly: src/sys/netinet/ip_ecn.h,v 1.4 2006/05/20 02:42:12 dillon Exp $ */ 3 /* $KAME: ip_ecn.h,v 1.6 2001/05/03 14:51:48 itojun Exp $ */ 4 5 /* 6 * Copyright (C) 1999 WIDE Project. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the project nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 */ 34 /* 35 * ECN consideration on tunnel ingress/egress operation. 36 * http://www.aciri.org/floyd/papers/draft-ipsec-ecn-00.txt 37 */ 38 39 #ifndef _NETINET_IP_ECN_H_ 40 #define _NETINET_IP_ECN_H_ 41 42 #ifndef _SYS_TYPES_H_ 43 #include <sys/types.h> 44 #endif 45 46 #if defined(_KERNEL) && !defined(_LKM) 47 #include "opt_inet.h" 48 #endif 49 50 #define ECN_ALLOWED 1 /* ECN allowed */ 51 #define ECN_FORBIDDEN 0 /* ECN forbidden */ 52 #define ECN_NOCARE (-1) /* no consideration to ECN */ 53 54 #ifdef _KERNEL 55 extern void ip_ecn_ingress (int, u_int8_t *, const u_int8_t *); 56 extern void ip_ecn_egress (int, const u_int8_t *, u_int8_t *); 57 #endif 58 59 #endif 60