1 | /* $FreeBSD: src/sys/netinet/ip_ecn.h,v 1.5 2002/03/19 21:25:46 alfred Exp $ */ |
---|
2 | /* $KAME: ip_ecn.h,v 1.6 2001/05/03 14:51:48 itojun Exp $ */ |
---|
3 | |
---|
4 | /* |
---|
5 | * Copyright (C) 1999 WIDE Project. |
---|
6 | * All rights reserved. |
---|
7 | * |
---|
8 | * Redistribution and use in source and binary forms, with or without |
---|
9 | * modification, are permitted provided that the following conditions |
---|
10 | * are met: |
---|
11 | * 1. Redistributions of source code must retain the above copyright |
---|
12 | * notice, this list of conditions and the following disclaimer. |
---|
13 | * 2. Redistributions in binary form must reproduce the above copyright |
---|
14 | * notice, this list of conditions and the following disclaimer in the |
---|
15 | * documentation and/or other materials provided with the distribution. |
---|
16 | * 3. Neither the name of the project nor the names of its contributors |
---|
17 | * may be used to endorse or promote products derived from this software |
---|
18 | * without specific prior written permission. |
---|
19 | * |
---|
20 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND |
---|
21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
---|
22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
---|
23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE |
---|
24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
---|
25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
---|
26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
---|
27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
---|
28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
---|
29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
---|
30 | * SUCH DAMAGE. |
---|
31 | * |
---|
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(_KERNEL) && !defined(_LKM) |
---|
39 | #include "opt_inet.h" |
---|
40 | #endif |
---|
41 | |
---|
42 | #define ECN_ALLOWED 1 /* ECN allowed */ |
---|
43 | #define ECN_FORBIDDEN 0 /* ECN forbidden */ |
---|
44 | #define ECN_NOCARE (-1) /* no consideration to ECN */ |
---|
45 | |
---|
46 | #ifdef _KERNEL |
---|
47 | extern void ip_ecn_ingress(int, u_int8_t *, const u_int8_t *); |
---|
48 | extern void ip_ecn_egress(int, const u_int8_t *, u_int8_t *); |
---|
49 | #endif |
---|