1 /* $NetBSD: ip_encap.h,v 1.13 2008/11/25 18:28:05 pooka Exp $ */ 2 /* $KAME: ip_encap.h,v 1.7 2000/03/25 07:23:37 sumikawa Exp $ */ 3 4 /* 5 * Copyright (C) 1995, 1996, 1997, and 1998 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 #ifndef _NETINET_IP_ENCAP_H_ 34 #define _NETINET_IP_ENCAP_H_ 35 36 #ifdef _KERNEL 37 38 #ifndef RNF_NORMAL 39 #include <net/radix.h> 40 #endif 41 42 struct encaptab { 43 struct radix_node nodes[2]; 44 LIST_ENTRY(encaptab) chain; 45 int af; 46 int proto; /* -1: don't care, I'll check myself */ 47 struct sockaddr *addrpack; /* malloc'ed, for radix lookup */ 48 struct sockaddr *maskpack; /* ditto */ 49 struct sockaddr *src; /* my addr */ 50 struct sockaddr *srcmask; 51 struct sockaddr *dst; /* remote addr */ 52 struct sockaddr *dstmask; 53 int (*func) (struct mbuf *, int, int, void *); 54 const struct protosw *psw; /* only pr_input will be used */ 55 void *arg; /* passed via PACKET_TAG_ENCAP */ 56 }; 57 58 /* to lookup a pair of address using radix tree */ 59 struct sockaddr_pack { 60 u_int8_t sp_len; 61 u_int8_t sp_family; /* not really used */ 62 /* followed by variable-length data */ 63 }; 64 65 struct ip_pack4 { 66 struct sockaddr_pack p; 67 struct sockaddr_in mine; 68 struct sockaddr_in yours; 69 }; 70 struct ip_pack6 { 71 struct sockaddr_pack p; 72 struct sockaddr_in6 mine; 73 struct sockaddr_in6 yours; 74 }; 75 76 void encap_init(void); 77 void encap4_input(struct mbuf *, ...); 78 int encap6_input(struct mbuf **, int *, int); 79 const struct encaptab *encap_attach(int, int, const struct sockaddr *, 80 const struct sockaddr *, const struct sockaddr *, 81 const struct sockaddr *, const struct protosw *, void *); 82 const struct encaptab *encap_attach_func(int, int, 83 int (*)(struct mbuf *, int, int, void *), 84 const struct protosw *, void *); 85 void *encap6_ctlinput(int, const struct sockaddr *, void *); 86 int encap_detach(const struct encaptab *); 87 void *encap_getarg(struct mbuf *); 88 #endif 89 90 #endif /* !_NETINET_IP_ENCAP_H_ */ 91