#!/usr/bin/perl
#
# $Copyright$
#
# $TAHI: ct/robust/FloodPing.seq,v 1.4 2001/10/05 06:39:13 masaxmasa Exp $
#
######################################################################
BEGIN {
	$V6evalTool::TestVersion = '$Name:  $';
}

use V6evalTool;
sub ping_one();

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

$IF=Link0;
$nodes=1;

#----- get arguments
foreach (@ARGV) {
	/^times=([0-9]+)/  && do {$times=$1; next; };
	print STDERR "Unknown option $_\n";
}

#----- start Capturing
vCapture($IF);

#----- make NCE
vLog("--- Initialize ---");
vLog("make NCE");
ping_one();

#----- start test
vLog("--- Test ---");
$pktname="echo_request";

for($i=0; $i < $times; $i++){
    $pktnames[$i]="$pktname";
}
vSend($IF, @pktnames);

#----- check NUT
vRecv($IF, 2, 0, 0,);

vLog("--- JUDGME ---");
ping_one();

vLogHTML('Looks OK, Please check whether NUT have crashed.');
exit $V6evalTool::exitPass;
end;

sub ping_one(){
	vSend($IF, echo_request);

	%ret = vRecv($IF, 5, 0, 0, ns, echo_reply);
	if ($ret{status} != 0) {
		vLogHTML('No response from NUT');
		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('Cannot receive Echo Reply<BR>');
			vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
			exit $V6evalTool::exitFail;
		}
	}

	if ($ret{recvFrame} ne 'echo_reply') {
		vLogHTML('Cannot receive Echo Reply<BR>');
		vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
		exit $V6evalTool::exitFail;
	}
}

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

=head1 NAME

FloodPing.seq - Flood ping

=head1 TARGET

Host and Router

=head1 SYNOPSIS

B<FloodPing.seq> [I<times=num>]

=head1 INITIALIZATION

Make neighbor cache entry for TN.

  1. Send echo request.
  2. If TN receive NS, sends NA.
  3. Wait echo reply.


  [TN]  --------------> [NUT]
        echo request

  [TN]  <-------------  [NUT]
            (NS)

  [TN]  --------------> [NUT]
            (NA)

  [TN]  <-------------  [NUT]
         echo reply


=head1 TEST PROCEDURE

TN and NUT is on the same link.

=over 4

    ---+--------+--- Link0
       |        |
     +-+-+   +--+-+
     |NUT|   | TN |
     +---+   +----+

       Figure. 1

=back

TN sends echo request packets as fast. the number of packets is specify
times option.


    [TN]   -------->   [NUT]
            request

    [TN]   -------->   [NUT]
            request

    [TN]   -------->   [NUT]
            request

               .
               .
               .

    [TN]   -------->   [NUT]
            request

After sent the flood packet, send echo request once more.

If TN receive NS, send NA. And wait echo reply packet from
NUT.


=head1 JUDGMENT

  PASS : echo reply packet received.

  FAIL : don't received echo reply packet.

=head1 NOTES

  If the judgement is PASS, you must check that NUT have not been
crashed by your eyes. Becouse the test can't detect it.

=head1 TERMINATION

NONE

=head1 SEE ALSO

perldoc V6evalTool

=cut