1 /* $FreeBSD: src/sys/netinet6/scope6_var.h,v 1.4 2005/01/07 02:30:35 imp Exp $ */ 2 /* $KAME: scope6_var.h,v 1.4 2000/05/18 15:03:27 jinmei Exp $ */ 3 4 /*- 5 * Copyright (C) 2000 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 _NETINET6_SCOPE6_VAR_H_ 34 #define _NETINET6_SCOPE6_VAR_H_ 35 36 #ifdef _KERNEL 37 38 /* 39 * IPv6 Core Protocols Implementation 40 * By Qing Li, Tatuya Jinmei, Keiichi Shima 41 * 42 * Some information from Chapter 2.9 (Handling Scope Zones) Figure 2.12, p.56 43 * 44 * User Space 45 * 46 * Normal App Statistics/Mgmt App Routing App 47 * /---------------\ /-------------------\ /------------------\ 48 * | sin6_scope_id | | embedded form | | embedded form | 49 * | only | | (+ sin6_scope_id) | | or sin6_scope_id | 50 * \---------------/ \-------------------/ \------------------/ 51 * ^ ^ ^ | 52 * | | | | 53 * no conversion parse parse embed 54 * | embedded embedded ID 55 * | ID ID (if necessary) 56 * | | | | 57 * v | | v 58 * /---------------\ /-------------------\ /------------------\ 59 * ------ | AF_INET6 | | kvm | | Routing | 60 * Kernel | socket | | interface | | socket | 61 * \---------------/ \-------------------/ \------------------/ 62 * ^ | ^ ^ 63 * | | | | 64 * clear embed no conversion | 65 * embedded ID | no conversion 66 * ID | ---------------------------------- | 67 * | V | | v 68 * /---------------\ /--------------------\ 69 * | |---- clear sin_scope_id --->| embedded form only | 70 * | |<--- set sin_scope_id ----| | 71 * | | \--------------------/ 72 * | embedded form | ^ 73 * | + | | 74 * | sin_scope_id | no conversion 75 * | | | 76 * | | V 77 * | | /--------------------\ 78 * | |---- clear sin_scope_id --->| embedded form only | 79 * | |<--- set sin_scope_id ----| | 80 * \---------------/ \--------------------/ 81 * -------- ^ | 82 * Physical | clear 83 * Network embed ID, embedded 84 * set ID 85 * sin_scope_id | 86 * | v 87 * /---------------\ 88 * | 128-bit IPv6 | 89 * | address | 90 * | (ID not | 91 * | included) | 92 * \---------------/ 93 */ 94 95 96 struct scope6_id { 97 /* 98 * 16 is correspondent to 4bit multicast scope field. 99 * i.e. from interface-local to global with some 100 * reserved/unassigned types. 101 */ 102 uint32_t s6id_list[16]; 103 }; 104 105 void scope6_init(void); 106 struct scope6_id *scope6_ifattach(struct ifnet *); 107 void scope6_ifdetach(struct scope6_id *); 108 uint32_t scope6_in6_addrscope(struct in6_addr *); 109 uint32_t scope6_addr2default(const struct in6_addr *); 110 int sa6_embedscope(struct sockaddr_in6 *, int); 111 int sa6_recoverscope(struct sockaddr_in6 *); 112 int in6_setzoneid(struct in6_addr *, uint32_t); 113 int in6_setscope(struct in6_addr *, const struct ifnet *, u_int32_t *); 114 int in6_clearscope(struct in6_addr *); 115 const char *in6_getscopename(const struct in6_addr *); 116 #endif /* _KERNEL */ 117 118 #endif /* _NETINET6_SCOPE6_VAR_H_ */ 119