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a1f7e5f8ee
- most of the kernel code will not care about the actual encoding of
scope zone IDs and won't touch "s6_addr16[1]" directly.
- similarly, most of the kernel code will not care about link-local
scoped addresses as a special case.
- scope boundary check will be stricter. For example, the current
*BSD code allows a packet with src=::1 and dst=(some global IPv6
address) to be sent outside of the node, if the application do:
s = socket(AF_INET6);
bind(s, "::1");
sendto(s, some_global_IPv6_addr);
This is clearly wrong, since ::1 is only meaningful within a single
node, but the current implementation of the *BSD kernel cannot
reject this attempt.
Submitted by: JINMEI Tatuya <jinmei__at__isl.rdc.toshiba.co.jp>
Obtained from: KAME
61 lines
2.6 KiB
C
61 lines
2.6 KiB
C
/* $FreeBSD$ */
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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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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 node-local to global with some reserved/unassigned types.
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*/
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u_int32_t s6id_list[16];
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};
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void scope6_init __P((void));
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struct scope6_id *scope6_ifattach __P((struct ifnet *));
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void scope6_ifdetach __P((struct scope6_id *));
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int scope6_set __P((struct ifnet *, struct scope6_id *));
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int scope6_get __P((struct ifnet *, struct scope6_id *));
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void scope6_setdefault __P((struct ifnet *));
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int scope6_get_default __P((struct scope6_id *));
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u_int32_t scope6_in6_addrscope __P((struct in6_addr *));
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u_int32_t scope6_addr2default __P((struct in6_addr *));
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int sa6_embedscope __P((struct sockaddr_in6 *, int));
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int sa6_recoverscope __P((struct sockaddr_in6 *));
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int in6_setscope __P((struct in6_addr *, struct ifnet *, u_int32_t *));
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int in6_clearscope __P((struct in6_addr *));
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#endif /* _KERNEL */
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#endif /* _NETINET6_SCOPE6_VAR_H_ */
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