#!/usr/bin/perl
#
# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005 Yokogawa Electric Corporation,
# IPA (Information-technology Promotion Agency, Japan).
# 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. However, using this software for the 
# purpose of testing or evaluating any products including merchantable 
# products may be permitted without any notification to the copyrighters.
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# 
# 
# 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.
#
# $TAHI: ct/spec/FH_Big65535.seq,v 1.20 2003/04/07 10:31:24 ozoe Exp $
#
######################################################################
BEGIN {
	$V6evalTool::TestVersion = '$Name: REL_2_1_2 $';
}

use V6evalTool;

%pktdesc = (
	echo_request	=> 'Send Echo Request (Preparation)',
	echo_reply	=> 'Recv Echo Reply',
	ns		=> 'Recv Neighbor Solicitation',
	na		=> 'Send Neighbor Advertisement',
);

$frag_num = 46;
for ($seq = 1; $seq <= $frag_num; $seq++) {
	$pktdesc{"echo_request_" . $seq} = "Send Echo Request fragment " . $seq ;
	$pktdesc{"echo_reply_" . $seq} = "Recv Echo Reply fragment " . $seq ;
	$done[$seq - 1] = "echo_reply_$seq";
}

$IF = Link0;

vCapture($IF);

#----- preparation

vLogHTML('<B>Begin Preparation</B>');

vSend($IF, echo_request);

%ret = vRecv($IF, 5, 0, 0, ns, echo_reply);
if ($ret{status} != 0) {
	vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
	exit $V6evalTool::exitFail;
}
if ($ret{recvFrame} eq 'ns') {
	vSend($IF, na);
	%ret = vRecv($IF, 5, 0, 0, echo_reply);
	if ($ret{status} != 0) {
		vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
		exit $V6evalTool::exitFail;
	}
}
if ($ret{recvFrame} ne 'echo_reply') {
	vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
	exit $V6evalTool::exitFail;
}

vSend($IF, na);

vLogHTML('<B>End Preparation</B>');

#----- main test

for ($seq = 1; $seq <= $frag_num; $seq++) {
	vSend($IF, "echo_request_$seq");
}

$rest = $frag_num;
while ($rest > 0) {
	%ret = vRecv($IF, 5, 0, 1, @done);
	if ($ret{status} == 2) {
		vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
		vSleep(65, "Discard Unexpected 'ICMP Time Exceeded' message (60+5 sec)");
		exit $V6evalTool::exitFail;
	}
	if ($ret{status} != 0) {
		if ($rest == $frag_num) {
			vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
			vSleep(65, "Discard Unexpected 'ICMP Time Exceeded' message (60+5 sec)");
			exit $V6evalTool::exitFail;
		}
		vLogHTML("Warning: [@done] not received, maybe dropped<BR>");
		vLogHTML('<FONT COLOR="#00FF00">WARN</FONT>');
		exit $V6evalTool::exitWarn;
	}
	for ($seq = 1; $seq <= $frag_num; $seq++) {
		if ($ret{recvFrame} eq $done[$seq - 1]) {
			$done[$seq - 1] = "";
			$rest--;
			break;
		}
	}
}

vLogHTML('OK');
exit $V6evalTool::exitPass;

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

=head1 NAME

FH_Big65535.seq - check Fragment Reassembly (Payload Size = 65535)

=head1 TARGET

Host and Router

=head1 SYNOPSIS

=begin html
<PRE>
  <A HREF="./FH_Big65535.seq">FH_Big65535.seq</A> [-tooloption ...] -pkt <A HREF="./FH_Big65535.def">FH_Big65535.def</A>
    -tooloption : v6eval tool option
  See also <A HREF="./FH_BigPayload.def">FH_BigPayload.def</A>
</PRE>

=end html

=head1 INITIALIZATION

  1. Ping to Target (create Neighbor Cache Entries, if not exist)
  2. Override Neighbor Cache Entries

=head1 TEST PROCEDURE

  Tester                      Target
    |                           |
    |-------------------------->| 
    |   Echo Request            |  * 46 fragments
    |                           |
    |                           |
    |<--------------------------|
    |   Echo Reply              |  * 46 fragments
    |                           |
    |                           |
    v                           v


  1. Send Echo Request (46 fragments)
  2. Receive Echo Reply (46 fragments)

  This test assumes MTU is 1500 (Ethernet Default).
  Each fragment packet's Payload Length is 1456 octets.
  Received fragment packets' Fragment ID are ignored.

=head1 JUDGMENT

  PASS: All fragment packet of Echo Reply Received

  WARN: Any fragment packet of Echo Reply Received

        Maybe some packets are not captured by bpf.

=head1 SEE ALSO

  perldoc V6evalTool

=cut