inet6_getscopeid.3 revision 1.2 $NetBSD: inet6_getscopeid.3,v 1.2 2013/10/19 23:34:48 wiz Exp $
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Copyright (c) 2003 The NetBSD Foundation, Inc.
All rights reserved.
This code is derived from software contributed to The NetBSD Foundation
by Christos Zoulas.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
.Dd October 19, 2013 .Dt INET6_GETSCOPEID 3 .Os
.Sh NAME .Nm inet6_getscopeid , .Nm inet6_putscopeid .Nd IPv6 scope id encoding and decoding functions
.Sh SYNOPSIS n netinet/in.h .Ft void .Fn inet6_getscopeid "struct sockaddr_in6 *sin6" "int flags" .Ft void .Fn inet6_putscopeid "struct sockaddr_in6 *sin6" "int flags"
.Sh DESCRIPTION These functions implement a KAME-specific extension that encodes and decodes the scope id inside in the 3rd and 4th byte of the address, for link-local, site-local, and multicast-link-local addresses. Typically those two bytes are .Dv 0 for these kinds of addresses. The scope id is stored in network byte order.
-
Copyright (c) 2003 The NetBSD Foundation, Inc.
All rights reserved.
This code is derived from software contributed to The NetBSD Foundation
by Christos Zoulas.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
.Dd October 19, 2013 .Dt INET6_GETSCOPEID 3 .Os
.Sh NAME .Nm inet6_getscopeid , .Nm inet6_putscopeid .Nd IPv6 scope id encoding and decoding functions
.Sh SYNOPSIS n netinet/in.h .Ft void .Fn inet6_getscopeid "struct sockaddr_in6 *sin6" "int flags" .Ft void .Fn inet6_putscopeid "struct sockaddr_in6 *sin6" "int flags"
.Sh DESCRIPTION These functions implement a KAME-specific extension that encodes and decodes the scope id inside in the 3rd and 4th byte of the address, for link-local, site-local, and multicast-link-local addresses. Typically those two bytes are .Dv 0 for these kinds of addresses. The scope id is stored in network byte order.
p The .Fn inet6_getscopeid function retrieves the scope id from the 3rd and the 4th address bytes, and sets the .Ft sin6_scope_id from them. It then clears the two address bytes.
p The .Fn inet6putscopeid function stores the scope id found in .Ft sin6_scope_id into the 3rd and 4th byte of the address. It then clears the .Ft sin6_scope_id .
p The .Fa flags argument controls for which addresses this action is performed. It can be a combination of: l -tag -width "INET6_IS_ADDR_MC_LINKLOCAL" t Dv INET6_IS_ADDR_LINKLOCAL t Dv INET6_IS_ADDR_MC_LINKLOCAL t Dv INET6_IS_ADDR_SITELOCAL .El .Sh HISTORY These functions first appeared in .Nx 7.0 .
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