#!/usr/bin/perl
#
# $Copyright$
#
# $Id: FL_NonZeroOverRouter.seq,v 1.1.1.1 2000/09/28 00:15:05 sekiya Exp $
#
######################################################################
BEGIN {
	$V6evalTool::TestVersion = '$Name:  $';
}

use V6evalTool;

if ($V6evalTool::NutDef{Type} ne 'router') {
    vLogHTML("This test is for the router only<BR>");
    exit $V6evalTool::exitRouterOnly;
}

%pktdesc = (
	echo_request_to_link0	=> 'Send Echo Request to Link0 (Non-Zero Flow Label)',
	echo_reply_from_link0	=> 'Recv Echo Reply from Link0 (Non-Zero Flow Label)',
	ns_from_link0_ll	=> 'Recv Neighbor Solicitation from Link0 (Link Local Address)',
	na_to_link0_ll		=> 'Send Neighbor Advertisement to Link0 (Link Local Address)',
	ns_from_link0		=> 'Recv Neighbor Solicitation from Link0 (Global Address)',
	na_to_link0		=> 'Send Neighbor Advertisement to Link0 (Global Address)',
	echo_reply_to_link1	=> 'Recv Echo Reply to Link1 (Non-Zero Flow Label)',
	echo_request_from_link1	=> 'Recv Echo Request from Link1 (Non-Zero Flow Label)',
	ns_from_link1_ll	=> 'Recv Neighbor Solicitation from Link1 (Link Local Address)',
	na_to_link1_ll		=> 'Send Neighbor Advertisement to Link1 (Link Local Address)',
	ns_from_link1		=> 'Recv Neighbor Solicitation from Link1 (Global Address)',
	na_to_link1		=> 'Send Neighbor Advertisement to Link1 (Global Address)',
);

$IF0 = Link0;
$IF1 = Link1;

#----- start capturing

vCapture($IF0);
vCapture($IF1);

#======================================================================
# ping over router

vSend($IF0, echo_request_to_link0);

%ret = vRecv($IF1, 5, 0, 0, ns_from_link1, ns_from_link1_ll, echo_request_from_link1);
if ($ret{status} != 0) {
	vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
	exit $V6evalTool::exitFail;
}
if ($ret{recvFrame} eq 'ns_from_link1') {
	vSend($IF1, na_to_link1);

	%ret = vRecv($IF1, 5, 0, 0, echo_request_from_link1);
	if ($ret{status} != 0) {
		vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
		exit $V6evalTool::exitFail;
	}
}
if ($ret{recvFrame} eq 'ns_from_link1_ll') {
	vSend($IF1, na_to_link1_ll);
	%ret = vRecv($IF1, 5, 0, 0, echo_request_from_link1);
	if ($ret{status} != 0) {
		vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
		exit $V6evalTool::exitFail;
	}
}
if ($ret{recvFrame} ne 'echo_request_from_link1') {
	vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
	exit $V6evalTool::exitFail;
}

vSend($IF1, echo_reply_to_link1);

%ret = vRecv($IF0, 5, 0, 0, ns_from_link0, ns_from_link0_ll, echo_reply_from_link0);
if ($ret{status} != 0) {
	vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
	exit $V6evalTool::exitFail;
}
if ($ret{recvFrame} eq 'ns_from_link0') {
	vSend($IF0, na_to_link0);
	%ret = vRecv($IF0, 5, 0, 0, echo_reply_from_link0);
	if ($ret{status} != 0) {
		vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
		exit $V6evalTool::exitFail;
	}
}
if ($ret{recvFrame} eq 'ns_from_link0_ll') {
	vSend($IF0, na_to_link0_ll);
	%ret = vRecv($IF0, 5, 0, 0, echo_reply_from_link0);
	if ($ret{status} != 0) {
		vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
		exit $V6evalTool::exitFail;
	}
}
if ($ret{recvFrame} ne 'echo_reply_from_link0') {
	vLogHTML('<FONT COLOR="#FF0000">NG</FONT>');
	exit $V6evalTool::exitFail;
}

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

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

=head1 NAME

  FL_NonZeroOverRouter - check Flow Label Non-Zero over Router

=head1 TARGET

  Router

=head1 SYNOPSIS

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

=end html

=head1 INITIALIZATION

  None

=head1 TEST PROCEDURE

  Tester                      Target                      Tester
              (Link0)                     (Link1)
    |                           |                           |
    |-------------------------->|                           |
    |   Echo Request to Link0   |                           |
    |                           |                           |
    |                           |-------------------------->|
    |                           |   Neighbor Solicitation   |
    |                           |                           |
    |                           |<--------------------------|
    |                           |   Neighbor Advertisement  |
    |                           |                           |
    |                           |-------------------------->|
    |                           |   Echo Request from Link1 |
    |                           |                           |
    |                           |                           |
    |                           |<--------------------------|
    |                           |   Echo Reply to Link1     |
    |                           |                           |
    |<--------------------------|                           |
    |   Neighbor Solicitation   |                           |
    |                           |                           |
    |-------------------------->|                           |
    |   Neighbor Advertisement  |                           |
    |                           |                           |
    |<--------------------------|                           |
    |   Echo Reply from Link0   |                           |
    |                           |                           |
    v                           v                           v

  1. Send Echo Request to Link0
  2. Wait Echo Reply from Link1 or NS from Link1
  3. If NS received then send NA to Link1, and wait Echo Reply form Link1 again
  4. Receive Echo Reply from Link1
  5. Send Echo Request to Link1
  6. Wait Echo Reply from Link0 or NS from Link0
  7. If NS received then send NA to Link0, and wait Echo Reply form Link0 again
  8. Receive Echo Reply from Link0

  Echo Request to Link0 Data is:

        IPv6 Header
            Version            = 6
            Traffic Class      = 0
            FlowLabel          = 0x34567 (20 bit)
            PayloadLength      = 16
            NextHeader         = 58 (ICMP)
            HopLimit           = 3
            SourceAddress      = Tester Global Address (Link0)
            DestinationAddress = Tester Global Address (Link1)

        ICMP Echo Request
            Type           = 128 (Echo Request)
            Code           = 0
            Checksum       = (auto)
            Identifier     = 0xffff
            SequenceNumber = 1
            PayloadData    = {1,2,3,4,5,6,7,8}

  Neighbor Solicitation packet's IP source Address selection may be:
    - Link Local Address
    - Global Address
  This test IS NOT the Neighbor Discovery test, so admit both implementation.

=head1 JUDGEMENT

  PASS: Echo Reply Received from Link0

        IPv6 Header
            Version             = 6
            Traffic Class       = 0
            FlowLabel           = 0x34567 (20 bit)
            PayloadLength       = 16
            NextHeader          = 58 (ICMP)
            HopLimit            = 2 (decremented)
            SourceAddress      = Tester Global Address (Link1)
            DestinationAddress = Tester Global Address (Link0)

        ICMP Echo Reply
            Type           = 129 (Echo Reply)
            Code           = 0
            Checksum       = (auto)
            Identifier     = 0xffff (same as Echo Request)
            SequenceNumber = 1 (same as Echo Request)
            PayloadData    = {1,2,3,4,5,6,7,8} (same as Echo Request)

=head1 SEE ALSO

  perldoc V6evalTool

=cut