#!/usr/bin/perl
#
# $Name: V6LC_P2_1_4_6 $
#
# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
# 	Yokogawa Electric Corporation.
# All rights reserved.
# 
# Redistribution and use of this software in source and binary
# forms, with or without modification, are permitted provided that
# the following conditions and disclaimer are agreed and accepted
# by the user:
# 
# 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.
# 
# 3. Neither the names of the copyrighters, the name of the project
#    which is related to this software (hereinafter referred to as
#    "project") nor the names of the contributors may be used to
#    endorse or promote products derived from this software without
#    specific prior written permission.
# 
# 4. No merchantable use may be permitted without prior written
#    notification to the copyrighters.
# 
# 5. The copyrighters, the project and the contributors may prohibit
#    the use of this software at any time.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHTERS, THE PROJECT AND
# CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING
# BUT NOT LIMITED THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE, ARE DISCLAIMED.  IN NO EVENT SHALL THE
# COPYRIGHTERS, THE PROJECT 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.
#
# $Id: EX_HdrProcessingOrder_HDF_10M.seq,v 1.4 2005/04/11 08:27:20 akisada Exp $
#
######################################################################
BEGIN {
	$V6evalTool::TestVersion = '$Name: V6LC_P2_1_4_6 $';
}

use V6evalTool;
use CommonSPEC;

$pktdesc{'echo_request_HDF_10_M'}	= 'Send Echo Request (Dst.hdr precedes Frg.hdr, Error from Dst.hdr)';
$pktdesc{'icmperr'}			= 'Recv ICMP Error (Parameter Problem, unrecognized IPv6 option encountered)';

$endStatus = $V6evalTool::exitPass;
$IF = 'Link0';

vCapture($IF);

#----- test
vSend($IF, 'echo_request_HDF_10_M');
%ret = nd_vRecv_EN($IF, $CommonSPEC::wait_reply, 0, 0, 'icmperr');

if ($ret{'status'} == 0) {
	vLogHTML('OK<BR>');
} else {
	vLogHTML('Cannot receive ICMP Error message<BR>');
	vLogHTML('<FONT COLOR="#FF0000">NG</FONT><BR>');
	$endStatus = $V6evalTool::exitFail;
}
#----- end test

$ret = cleanup($IF);
vStop($IF);
if ($ret == $CommonSPEC::Success) {
	exit($endStatus);
} else {
	exit($V6evalTool::exitFatal);
}


######################################################################
__END__

=head1 NAME

  EX_HdrProcessingOrder_HDF_10M - Extension Header Processing Order (Destination Options Header precedes Fragment Header, Error from Destination Options)

=head1 TARGET

  Host and Router

=head1 SYNOPSIS

=begin html
<PRE>
  <A HREF="./EX_HdrProcessingOrder_HDF_10M.seq">EX_HdrProcessingOrder_HDF_10M.seq</A> [-tooloption ...] -pkt <A HREF="./EX_HdrProcessingOrder_HDF_10M.def">EX_HdrProcessingOrder_HDF_10M.def</A>
    -tooloption : v6eval tool option
</PRE>

=end html

=head1 INITIALIZATION

  None

=head1 TEST PROCEDURE

  Tester                      Target
    |                           |
    |-------------------------->|
    |   Echo Request            |
    |                           |
    |                           |
    |<--------------------------|
    |   Neighbor Solicitation   |
    |                           |
    |                           |
    |-------------------------->|
    |   Neighbor Advertisement  |
    |                           |
    |                           | 
    |<--------------------------|
    |   ICMP Error              |
    |                           |
    v                           v


  1. Send Echo Request
  2. Wait ICMP Error or NS
  3. If NS received then send NA, and wait ICMP Error again
  4. Receive ICMP Error

  Echo Request Data is:

        IPv6 Header
            Version            = 6
            Traffic Class      = 0
            FlowLabel          = 0
            PayloadLength      = 37
            NextHeader         = 0 (Hop-by-Hop Options Header)
            SourceAddress      = Tester Link Local Address
            DestinationAddress = Target Link Local Address

        Hop-by-Hop Options Header
            NextHeader         = 60 (Destination Options Header)
            HeaderExtLength    = 0
            OptionType         = 1 (PadN)
            OptDataLength      = 4
            pad                = {0, 0, 0, 0}

        Destination Options Header
            NextHeader         = 44 (Fragment Header)
            HeaderExtLength    = 0
            OptionType         = 135 (unknown, msb: 10)
            OptDataLength      = 4
            data               = {0, 0, 0, 0}

        Fragment Header
            NextHeader         = 58 (ICMPv6)
            FragmentOffset     = 0
            MFlag              = 1
            FragmentID         = 101

        ICMPv6 Echo Request
            Type           = 128 (Echo Request)
            Code           = 0
            Checksum       = (auto)
            Identifier     = 0xffff
            SequenceNumber = 1
            PayloadData    = {1, 2, 3, 4, 5}

=head1 JUDGEMENT

  PASS: ICMP Error Received

        IPv6 Header
            Version             = 6
            Traffic Class       = 0
            FlowLabel           = 0
            PayloadLength       = 85
            NextHeader          = 58 (ICMPv6)
            SourceAddress       = Target Link Local Address
            Destination Address = Tester Link Local Address

        ICMP Error
            Type           = 4 (Parameter Problem)
            Code           = 2 (unrecognized IPv6 option encountered)
            Checksum       = (auto)
            Pointer        = 50 (Offset to unrecognized option)
            PayloadData    = (Sent Packet)

=cut

# =head1 REFERENCE
# 
# RFC2460
# 
# 4.1  Extension Header Order
# 
#    When more than one extension header is used in the same packet, it is
#    recommended that those headers appear in the following order:
# 
#            IPv6 header
#            Hop-by-Hop Options header
#            Destination Options header (note 1)
#            Routing header
#            Fragment header
#            Authentication header (note 2)
#            Encapsulating Security Payload header (note 2)
#            Destination Options header (note 3)
#            upper-layer header
# 
#            note 1: for options to be processed by the first destination
#                    that appears in the IPv6 Destination Address field
#                    plus subsequent destinations listed in the Routing
#                    header.
# 
#            note 2: additional recommendations regarding the relative
#                    order of the Authentication and Encapsulating
#                    Security Payload headers are given in [RFC-2406].
# 
#            note 3: for options to be processed only by the final
#                    destination of the packet.      
# 
#    Each extension header should occur at most once, except for the
#    Destination Options header which should occur at most twice (once
#    before a Routing header and once before the upper-layer header).
# 
#    If the upper-layer header is another IPv6 header (in the case of IPv6
#    being tunneled over or encapsulated in IPv6), it may be followed by
#    its own extension headers, which are separately subject to the same
#    ordering recommendations.
# 
#    If and when other extension headers are defined, their ordering
#    constraints relative to the above listed headers must be specified.
# 
#    IPv6 nodes must accept and attempt to process extension headers in
#    any order and occurring any number of times in the same packet,
#    except for the Hop-by-Hop Options header which is restricted to
#    appear immediately after an IPv6 header only.  Nonetheless, it is
#    strongly advised that sources of IPv6 packets adhere to the above
#    recommended order until and unless subsequent specifications revise
#    that recommendation.
# 
# 4.2  Options
# 
#    Two of the currently-defined extension headers -- the Hop-by-Hop
#    Options header and the Destination Options header -- carry a variable
#    number of type-length-value (TLV) encoded "options", of the following
#    format:
# 
#       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- - - - - - - - -
#       |  Option Type  |  Opt Data Len |  Option Data
#       +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- - - - - - - - -
# 
#       Option Type          8-bit identifier of the type of option.
# 
#       Opt Data Len         8-bit unsigned integer.  Length of the Option
#                            Data field of this option, in octets.
# 
#       Option Data          Variable-length field.  Option-Type-specific
#                            data.
# 
#    The sequence of options within a header must be processed strictly in
#    the order they appear in the header; a receiver must not, for
#    example, scan through the header looking for a particular kind of
#    option and process that option prior to processing all preceding
#    ones.
# 
#    The Option Type identifiers are internally encoded such that their
#    highest-order two bits specify the action that must be taken if the
#    processing IPv6 node does not recognize the Option Type:
# 
#       00 - skip over this option and continue processing the header.
# 
#       01 - discard the packet.
# 
# =begin html
# <PRE>
#       <B>10 - discard the packet and, regardless of whether or not the
#            packet's Destination Address was a multicast address, send an
#            ICMP Parameter Problem, Code 2, message to the packet's
#            Source Address, pointing to the unrecognized Option Type.</B>
# </PRE>
# 
# =end html
# 
#       11 - discard the packet and, only if the packet's Destination
#            Address was not a multicast address, send an ICMP Parameter
#            Problem, Code 2, message to the packet's Source Address,
#            pointing to the unrecognized Option Type.
# 

=pod

=head1 REFERENCE

=begin html
<BLOCKQUOTE>
<PRE>
RFC 2460 - IPv6 Specification
</PRE>
</BLOCKQUOTE>

=end html

=head1 SEE ALSO

  perldoc V6evalTool

=cut