119 lines
5.6 KiB
C
119 lines
5.6 KiB
C
/* $FreeBSD: src/sys/netinet6/scope6_var.h,v 1.4 2005/01/07 02:30:35 imp Exp $ */
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/* $KAME: scope6_var.h,v 1.4 2000/05/18 15:03:27 jinmei Exp $ */
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/*-
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* Copyright (C) 2000 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _NETINET6_SCOPE6_VAR_H_
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#define _NETINET6_SCOPE6_VAR_H_
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#ifdef _KERNEL
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/*
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* IPv6 Core Protocols Implementation
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* By Qing Li, Tatuya Jinmei, Keiichi Shima
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*
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* Some information from Chapter 2.9 (Handling Scope Zones) Figure 2.12, p.56
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*
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* User Space
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*
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* Normal App Statistics/Mgmt App Routing App
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* /---------------\ /-------------------\ /------------------\
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* | sin6_scope_id | | embedded form | | embedded form |
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* | only | | (+ sin6_scope_id) | | or sin6_scope_id |
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* \---------------/ \-------------------/ \------------------/
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* ^ ^ ^ |
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* | | | |
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* no conversion parse parse embed
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* | embedded embbeded ID
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* | ID ID (if necessary)
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* | | | |
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* v | | v
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* /---------------\ /-------------------\ /------------------\
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* ------ | AF_INET6 | | kvm | | Routing |
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* Kernel | socket | | interface | | socket |
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* \---------------/ \-------------------/ \------------------/
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* ^ | ^ ^
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* | | | |
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* clear embed no conversion |
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* embedded ID | no conversion
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* ID | ---------------------------------- |
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* | V | | v
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* /---------------\ /--------------------\
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* | |---- clear sin_scope_id --->| embedded form only |
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* | |<--- set sin_scope_id ----| |
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* | | \--------------------/
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* | embedded form | ^
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* | + | |
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* | sin_scope_id | no conversion
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* | | |
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* | | V
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* | | /--------------------\
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* | |---- clear sin_scope_id --->| embedded form only |
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* | |<--- set sin_scope_id ----| |
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* \---------------/ \--------------------/
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* -------- ^ |
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* Physical | clear
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* Network embed ID, embedded
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* set ID
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* sin_scope_id |
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* | v
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* /---------------\
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* | 128-bit IPv6 |
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* | address |
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* | (ID not |
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* | included) |
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* \---------------/
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*/
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struct scope6_id {
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/*
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* 16 is correspondent to 4bit multicast scope field.
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* i.e. from interface-local to global with some
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* reserved/unassigned types.
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*/
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uint32_t s6id_list[16];
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};
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void scope6_init(void);
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struct scope6_id *scope6_ifattach(struct ifnet *);
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void scope6_ifdetach(struct scope6_id *);
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uint32_t scope6_in6_addrscope(struct in6_addr *);
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uint32_t scope6_addr2default(const struct in6_addr *);
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int sa6_embedscope(struct sockaddr_in6 *, int);
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int sa6_recoverscope(struct sockaddr_in6 *);
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int in6_setzoneid(struct in6_addr *, uint32_t);
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int in6_setscope(struct in6_addr *, const struct ifnet *, u_int32_t *);
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int in6_clearscope(struct in6_addr *);
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const char *in6_getscopename(const struct in6_addr *);
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#endif /* _KERNEL */
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#endif /* _NETINET6_SCOPE6_VAR_H_ */
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