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[dragonfly.git] / sys / netinet / ip_ecn.h
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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 $ */
5 /*
6 * Copyright (C) 1999 WIDE Project.
7 * All rights reserved.
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.
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.
35 * ECN consideration on tunnel ingress/egress operation.
36 * http://www.aciri.org/floyd/papers/draft-ipsec-ecn-00.txt
39 #ifndef _NETINET_IP_ECN_H_
40 #define _NETINET_IP_ECN_H_
42 #ifndef _SYS_TYPES_H_
43 #include <sys/types.h>
44 #endif
46 #if defined(_KERNEL) && !defined(_LKM)
47 #include "opt_inet.h"
48 #endif
50 #define ECN_ALLOWED 1 /* ECN allowed */
51 #define ECN_FORBIDDEN 0 /* ECN forbidden */
52 #define ECN_NOCARE (-1) /* no consideration to ECN */
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
59 #endif