#!/usr/bin/perl
#
# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
# Yokogawa Electric Corporation.
# All rights reserved.
#
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# which is related to this software (hereinafter referred to as
# "project") nor the names of the contributors may be used to
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# specific prior written permission.
#
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# 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.
#
# $TAHI: ct/icmp.p2/To_Multi_Pkt_Too_Big.seq,v 1.12 2006/02/02 02:32:18 akisada Exp $
########################################################################
BEGIN { $V6evalTool::TestVersion = '$Name: V6LC_P2_1_4_6 $'; }
use V6evalTool;
use icmp;
use Pkt_Too_Big;
use lib '../';
use AdvancedFunctionality;
sub cleanup_tunnel();
# Interface
$IF = "Link0";
$IF1 = "Link1";
checkNUT(router);
if (!$AdvancedFunctionality::MULTICAST_ROUTING ||
!$AdvancedFunctionality::MTU_CONFIGURATION) {
exit($V6evalTool::exitSkip);
}
%pktdesc = (
echo_request_1500_link0 => 'Send Echo Request w/ 1500 bytes (Link0)',
pkt_too_big_link0 => 'Receive Packet Too Big Message (MTU = 1280)',
);
#
#
#
vLogHTML("Initialization
");
vCapture($IF);
if($AdvancedFunctionality::HAS_MULTIPLE_INTERFACES) {
vCapture($IF1);
}
#----------------------------------------------------------------------
# Initialization
#----------------------------------------------------------------------
$ret = setup();
if ($ret == $icmp::subFail){
goto error;
}
unless($AdvancedFunctionality::HAS_MULTIPLE_INTERFACES) {
my $srcaddr = vMAC2LLAddr($V6evalTool::NutDef{'Link0_addr'});
$srcaddr =~ s/fe80::/3ffe:501:ffff:100:/;
my $dstaddr = vMAC2LLAddr($V6evalTool::TnDef{'Link0_addr'});
$dstaddr =~ s/fe80::/3ffe:501:ffff:110:/;
my $insrcaddr = vMAC2LLAddr($V6evalTool::TnDef{'Link0_addr'});
$insrcaddr =~ s/fe80::/3ffe:501:ffff:100:/;
my $indstaddr = vMAC2LLAddr($V6evalTool::TnDef{'Link0_addr'});
$indstaddr =~ s/fe80::/3ffe:501:ffff:101:/;
my $gateway = vMAC2LLAddr($V6evalTool::TnDef{'Link0_addr'});
my $Link0_device = $V6evalTool::NutDef{'Link0_device'};
# if(vRemote('route.rmt', 'cmd=add',
# "prefix=3ffe:501:ffff:110::", 'prefixlen=64',
# "gateway=$gateway", "if=$Link0_device")) {
#
# vLogHTML('route.rmt: '.
# 'Can\'t configure the route.
');
#
# exit($V6evalTool::exitFatal);
# }
if(vRemote('tunnel.rmt',
'if=0 '.
'prefixlen=64 '.
'routeprefixlen=64 '.
'addrfamily=inet6 '.
"prefix=3ffe:501:ffff:101:: ".
"srcaddr=$srcaddr ".
"dstaddr=$dstaddr ".
"insrcaddr=$insrcaddr ".
"indstaddr=$indstaddr ")) {
vLogHTML('tunnel.rmt: '.
'Can\'t configure the tunnel.
');
exit($V6evalTool::exitFatal);
}
}
#----------------------------------------------------------------------
# check mld
#----------------------------------------------------------------------
vLog("Check MLD");
$rvalue = vRemote("pim6dd.rmt","","usePim6dd=start");
if ($rvalue > 0) {
vLogHTML('vRemote pim6dd.rmt failed
');
goto error;
}
$pktdesc{echo_request_multicast} = 'Receive Echo Request (multicast)';
vClear($AdvancedFunctionality::HAS_MULTIPLE_INTERFACES? $IF1: $IF);
vSend($AdvancedFunctionality::HAS_MULTIPLE_INTERFACES? $IF1: $IF,
mld_report_fromTN);
vSleep(3);
vClear($AdvancedFunctionality::HAS_MULTIPLE_INTERFACES? $IF1: $IF);
vSend($IF, echo_request_mcast_Link0);
%ret = vRecv($AdvancedFunctionality::HAS_MULTIPLE_INTERFACES? $IF1: $IF,
$icmp::wait_reply, 0, 0, echo_request_multicast);
if ($ret{status} != 0) {
vLogHTML('TN can not receive echo request (multicast).
');
vLogHTML('NUT not support MLD.
');
goto error;
}
#----------------------------------------------------------------------
# Test
#----------------------------------------------------------------------
vLogHTML("Test
");
#----------------------------------------------------------------------
# reduce Link MTU of LINK1 Interface from 1500 to 1280
#----------------------------------------------------------------------
if($AdvancedFunctionality::HAS_MULTIPLE_INTERFACES &&
(set_mtu($IF1, 1280) != $icmp::subPass)
) {
vLogHTML('set mtu failed.
');
goto error;
};
vClear($IF);
%ret1 = vSend($IF, echo_request_1500_link0);
%ret = icmp_vRecv($IF, $icmp::wait_reply, $ret1{sentTime1}, 0, pkt_too_big_link0);
if ($ret{status} != 0) {
vLogHTML('TN can not receive Packet Too Big Message.
');
goto error;
}
elsif ($ret{recvFrame} eq 'pkt_too_big_link0') {
vLog("TN received Packet Too Big Message.");
}
else {
vLogHTML('TN receive unexpected packets from NUT
');
goto error;
};
#----------------------------------------------------------------------
# remove configurations
#----------------------------------------------------------------------
vLog("clear configurations");
if($AdvancedFunctionality::HAS_MULTIPLE_INTERFACES) {
set_mtu($IF1, 1500);
}
$rvalue = vRemote("pim6dd.rmt","","usePim6dd=stop");
vLog("OK");
cleanup();
unless($AdvancedFunctionality::HAS_MULTIPLE_INTERFACES) {
cleanup_tunnel();
}
vStop($IF);
if($AdvancedFunctionality::HAS_MULTIPLE_INTERFACES) {
vStop($IF1);
}
exit($V6evalTool::exitPass);
error:
vLogHTML('FAIL
');
vLog("clear configurations");
set_mtu($IF1, 1500);
$rvalue = vRemote("pim6dd.rmt","","usePim6dd=stop");
cleanup();
unless($AdvancedFunctionality::HAS_MULTIPLE_INTERFACES) {
cleanup_tunnel();
}
vStop($IF);
if($AdvancedFunctionality::HAS_MULTIPLE_INTERFACES) {
vStop($IF1);
}
exit($V6evalTool::exitFail);
#----------------------------------------------------------------------#
sub
cleanup_tunnel()
{
my $srcaddr = vMAC2LLAddr($V6evalTool::NutDef{'Link0_addr'});
$srcaddr =~ s/fe80::/3ffe:501:ffff:100:/;
my $dstaddr = vMAC2LLAddr($V6evalTool::NutDef{'Link0_addr'});
$dstaddr =~ s/fe80::/3ffe:501:ffff:110:/;
my $insrcaddr = vMAC2LLAddr($V6evalTool::TnDef{'Link0_addr'});
$insrcaddr =~ s/fe80::/3ffe:501:ffff:100:/;
my $indstaddr = vMAC2LLAddr($V6evalTool::TnDef{'Link0_addr'});
$indstaddr =~ s/fe80::/3ffe:501:ffff:101:/;
my $gateway = vMAC2LLAddr($V6evalTool::TnDef{'Link0_addr'});
my $Link0_device = $V6evalTool::NutDef{'Link0_device'};
if(vRemote('route.rmt', 'cmd=delete',
"prefix=3ffe:501:ffff:110::", 'prefixlen=64',
"gateway=$gateway", "if=$Link0_device")) {
vLogHTML('route.rmt: '.
'Can\'t configure the route.
');
exit($V6evalTool::exitFatal);
}
if(vRemote('tunnel.rmt',
'if=0 '.
'deletetunnel '.
'prefixlen=64 '.
'routeprefixlen=64 '.
'addrfamily=inet6 '.
"prefix=3ffe:501:ffff:101:: ".
"srcaddr=$srcaddr ".
"dstaddr=$dstaddr ".
"insrcaddr=$insrcaddr ".
"indstaddr=$indstaddr ")) {
vLogHTML('tunnel.rmt: '.
'Can\'t configure the tunnel.
');
exit($V6evalTool::exitFatal);
}
return($ret);
}
########################################################################
__END__
=head1 NAME
To_Multi_Pkt_Too_Big - Verify that the NUT sends Packet Too Big Message
=head1 TARGET
Router
=head1 SYNOPSIS
To_Multi_Pkt_Too_Big.seq [-tooloption ...] -p To_Multi_Pkt_Too_Big.def
=head1 NETWORK CONFIGURATION
This test is OFFLINK Network Configuration test.
In this test, TN play a Roll of the Router.
Physical Network configuration
Link0
--------+---------------+--------------
| |
NUT TN
| |
--------+---------------+--------------
Link1
Logical Network Configuration
Host A (TN-Link0)
| Link0
--------+-------+-----------------
|
NUT (globaladdress:B)
|
--------+-------+-----------------
| Link1
Router(TN-Link1)
|
----------------+-------+---------
|
HOST B (OFFLINK_LINK1_GLOBAL_ADDRESS)
In this configuration, Packets are send and received.
for example,
In Logical
HOST B -- Echo Reply --> NUT
Actually, in physical
TN (as Router) -- Echo Reply --> NUT
=head1 INITIALIZATION
Status of Neighbor Cache Entry for TN's addresses are reachable.
=head1 TEST PROCEDURE
This test verifies that the node sends a Packet Too Big Message
in response to a packet that it can not forward because the packet
is larger than the MTU of the outgoing link.
TN NUT
---------------------------
1.
After NUT is initialized (set static route) , NUT sets
the Link MTU of LINK1 Interface to 1280 .
2.
TN send Echo Request to Host B.
=== echo request ===>
src address : TN global address
dst address : global multicast address(ff1e::1:2)
PayloadLength : 1460
3.
NUT send Packet Too Big Message
<=== Packet Too Big Message ===
=head1 JUDGEMENT
<< PASS >>
NUT send a Packet Too Big Message.
<< FAIL >>
NUT do not send a Packet Too Big Message.
=cut
# =head1 REFERENCE
#
# RFC2463
#
# 2.4 Message Processing Rules
#
# Implementations MUST observe the following rules when processing
# ICMPv6 messages (from [RFC-1122]):
#
# =begin html
#
# (e) An ICMPv6 error message MUST NOT be sent as a result of
# receiving:
# (e.1) an ICMPv6 error message, or
# (e.2) a packet destined to an IPv6 multicast address (there are
# two exceptions to this rule: (1) the Packet Too Big
# Message - Section 3.2 - to allow Path MTU discovery to
# work for IPv6 multicast, and (2) the Parameter Problem
# Message, Code 2 - Section 3.4 - reporting an unrecognized
# IPv6 option that has the Option Type highest-order two
# bits set to 10), or
# (e.3) a packet sent as a link-layer multicast, (the exception
# from e.2 applies to this case too), or
# (e.4) a packet sent as a link-layer broadcast, (the exception
# from e.2 applies to this case too), or
# (e.5) a packet whose source address does not uniquely identify
# a single node -- e.g., the IPv6 Unspecified Address, an
# IPv6 multicast address, or an address known by the ICMP
# message sender to be an IPv6 anycast address.
#
#
# =end html
#
# 3.2 Packet Too Big Message
#
# 0 1 2 3
# 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
# +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
# | Type | Code | Checksum |
# +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
# | MTU |
# +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
# | As much of invoking packet |
# + as will fit without the ICMPv6 packet +
# | exceeding the minimum IPv6 MTU [IPv6] |
#
# IPv6 Fields:
#
# =begin html
#
# Destination Address
# Copied from the Source Address field of the invoking
# packet.
#
#
# =end html
#
# ICMPv6 Fields:
#
# =begin html
#
# Type 2
#
#
# =end html
#
# =begin html
#
# Code Set to 0 (zero) by the sender and ignored by the
# receiver
#
#
# =end html
#
# MTU The Maximum Transmission Unit of the next-hop link.
#
# Description
#
# =begin html
#
# A Packet Too Big MUST be sent by a router in response to a packet
# that it cannot forward because the packet is larger than the MTU of
# the outgoing link. The information in this message is used as part
# of the Path MTU Discovery process [PMTU].
#
#
# =end html
#
# Sending a Packet Too Big Message makes an exception to one of the
# rules of when to send an ICMPv6 error message, in that unlike other
# messages, it is sent in response to a packet received with an IPv6
# multicast destination address, or a link-layer multicast or link-
# layer broadcast address.
#
=pod
=head1 REFERENCE
=begin html
RFC 2463 - ICMPv6 (ICMP for IPv6)
=end html
=head1 SEE ALSO
perldoc V6evalTool
perldoc V6evalRemote
=cut