| 1 | /* $OpenBSD: ip_ecn.h,v 1.7 2018/11/14 23:55:04 dlg Exp $ */ |
| 2 | /* $KAME: ip_ecn.h,v 1.5 2000/03/27 04:58:38 sumikawa 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 | #ifndef _NETINET_IP_ECN_H_ |
| 35 | #define _NETINET_IP_ECN_H_ |
| 36 | |
| 37 | /* |
| 38 | * ECN consideration on tunnel ingress/egress operation. |
| 39 | * http://www.aciri.org/floyd/papers/draft-ipsec-ecn-00.txt |
| 40 | */ |
| 41 | |
| 42 | #define ECN_ALLOWED_IPSEC 2 /* ECN allowed */ |
| 43 | #define ECN_ALLOWED 1 /* ECN allowed */ |
| 44 | #define ECN_FORBIDDEN 0 /* ECN forbidden */ |
| 45 | #define ECN_NOCARE (-1) /* no consideration to ECN */ |
| 46 | |
| 47 | #if defined(_KERNEL) |
| 48 | extern void ip_ecn_ingress(int, u_int8_t *, u_int8_t *); |
| 49 | extern int ip_ecn_egress(int, u_int8_t *, u_int8_t *); |
| 50 | void ip_tos_patch(struct ip *, uint8_t); |
| 51 | #endif /* _KERNEL */ |
| 52 | #endif /* _NETINET_IP_ECN_H_ */ |