1 /* $OpenBSD: ip_gre.h,v 1.20 2025/01/01 13:44:22 bluhm Exp $ */ 2 /* $NetBSD: ip_gre.h,v 1.3 1998/10/07 23:33:02 thorpej Exp $ */ 3 4 /* 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Heiko W.Rupp <hwr@pilhuhn.de> 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #ifndef _NETINET_IP_GRE_H_ 34 #define _NETINET_IP_GRE_H_ 35 36 /* Protocol number for Cisco's WCCP 37 * The Internet Draft is: 38 * draft-forster-wrec-wccp-v1-00.txt 39 */ 40 #define GREPROTO_WCCP 0x883e 41 42 /* 43 * Names for GRE sysctl objects 44 */ 45 #define GRECTL_ALLOW 1 /* accept incoming GRE packets */ 46 #define GRECTL_WCCP 2 /* accept WCCPv1-style GRE packets */ 47 #define GRECTL_MAXID 3 48 49 #define GRECTL_NAMES { \ 50 { 0, 0 }, \ 51 { "allow", CTLTYPE_INT }, \ 52 { "wccp", CTLTYPE_INT }, \ 53 } 54 55 #ifdef _KERNEL 56 57 extern const struct pr_usrreqs gre_usrreqs; 58 59 int gre_send(struct socket *, struct mbuf *, struct mbuf *, 60 struct mbuf *); 61 #endif /* _KERNEL */ 62 #endif /* _NETINET_IP_GRE_H_ */ 63