1 /* $KAME: ip_encap.h,v 1.7 2000/03/25 07:23:37 sumikawa Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-3-Clause 5 * 6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 7 * Copyright (c) 2018 Andrey V. Elsukov <ae@FreeBSD.org> 8 * All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the project nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #ifndef _NETINET_IP_ENCAP_H_ 36 #define _NETINET_IP_ENCAP_H_ 37 38 #ifdef _KERNEL 39 40 #include <net/vnet.h> 41 42 int encap4_input(struct mbuf **, int *, int); 43 int encap6_input(struct mbuf **, int *, int); 44 45 typedef int (*encap_lookup_t)(const struct mbuf *, int, int, void **); 46 typedef int (*encap_check_t)(const struct mbuf *, int, int, void *); 47 typedef int (*encap_input_t)(struct mbuf *, int, int, void *); 48 typedef void (*encap_srcaddr_t)(void *, const struct sockaddr *, int); 49 50 struct encap_config { 51 int proto; /* protocol */ 52 int min_length; /* minimum packet length */ 53 int max_hdrsize; /* maximum header size */ 54 int exact_match; /* a packet is exactly matched */ 55 #define ENCAP_DRV_LOOKUP 0x7fffffff 56 57 encap_lookup_t lookup; 58 encap_check_t check; 59 encap_input_t input; 60 61 void *pad[3]; 62 }; 63 64 struct encaptab; 65 struct srcaddrtab; 66 67 const struct encaptab *ip_encap_attach(const struct encap_config *, 68 void *arg, int mflags); 69 const struct encaptab *ip6_encap_attach(const struct encap_config *, 70 void *arg, int mflags); 71 72 const struct srcaddrtab *ip_encap_register_srcaddr(encap_srcaddr_t, 73 void *arg, int mflags); 74 const struct srcaddrtab *ip6_encap_register_srcaddr(encap_srcaddr_t, 75 void *arg, int mflags); 76 77 int ip_encap_unregister_srcaddr(const struct srcaddrtab *); 78 int ip6_encap_unregister_srcaddr(const struct srcaddrtab *); 79 int ip_encap_detach(const struct encaptab *); 80 int ip6_encap_detach(const struct encaptab *); 81 82 VNET_DECLARE(bool, encap_hash_inbound); 83 #define V_encap_hash_inbound VNET(encap_hash_inbound) 84 85 bool encap_set_flowid(struct mbuf *, int); 86 #endif 87 88 #endif /*_NETINET_IP_ENCAP_H_*/ 89