#!/usr/bin/perl # # Copyright (C) 1999, 2000, 2001, 2002, 2003 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. # # # # 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_1stOnly.seq,v 1.23 2003/06/09 07:39:43 ozoe Exp $ # ###################################################################### BEGIN { $V6evalTool::TestVersion = '$Name: REL_2_1_1 $'; } use V6evalTool; %pktdesc = ( echo_request => 'Send Echo Request (Preparation)', echo_reply => 'Recv Echo Reply', ns => 'Recv Neighbor Solicitation', na => 'Send Neighbor Advertisement', echo_request_1st => 'Send Echo Request (1st fragment only)', time_exceeded_1st => 'Recv ICMP Error (Time Exceeded, fragment reassembly time exceeded)', ); $IF = Link0; vCapture($IF); #----- preparation vLogHTML('Begin Preparation'); vSend($IF, echo_request); %ret = vRecv($IF, 5, 0, 0, ns, echo_reply); if ($ret{status} != 0) { vLogHTML('NG'); exit $V6evalTool::exitFail; } if ($ret{recvFrame} eq 'ns') { vSend($IF, na); %ret = vRecv($IF, 5, 0, 0, echo_reply); if ($ret{status} != 0) { vLogHTML('NG'); exit $V6evalTool::exitFail; } } if ($ret{recvFrame} ne 'echo_reply') { vLogHTML('NG'); exit $V6evalTool::exitFail; } vSend($IF, na); vLogHTML('End Preparation'); #----- main test vSend($IF, echo_request_1st); %ret = vRecv($IF, 65, 0, 0, time_exceeded_1st); if ($ret{status} == 0 && $ret{recvFrame} eq 'time_exceeded_1st') { vLogHTML('OK'); exit $V6evalTool::exitPass; } vLogHTML('NG'); vSleep(65, "Discard Unexpected 'ICMP Time Exceeded' message (60+5 sec)"); exit $V6evalTool::exitFail; ###################################################################### __END__ =head1 NAME FH_1stOnly - check Fragment Reassembly (1st fragment only) =head1 TARGET Host and Router =head1 SYNOPSIS =begin html
FH_1stOnly.seq [-tooloption ...] -pkt Fragment.def -tooloption : v6eval tool option=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 (1st) | | | | | |<--------------------------| | ICMP Error | | | | | v v 1. Send Echo Request (1st fragment) 2. Wait ICMP Error (timeout = 60 sec) 3. Receive ICMP Error Echo Request Data (original) is: IPv6 Header Version = 6 Traffic Class = 0 FlowLabel = 0 PayloadLength = 1032 NextHeader = 58 (ICMP) SourceAddress = Tester Link Local Address DestinationAddress = Target Link Local Address ICMP Echo Request Type = 128 (Echo Request) Code = 0 Checksum = (auto) Identifier = (auto) SequenceNumber = 0 PayloadData = data repeat{0x1, 512} data repeat{0x2, 512} Echo Request Data (1st fragment) is: IPv6 Header Version = 6 Traffic Class = 0 FlowLabel = 0 PayloadLength = 528 NextHeader = 44 (Fragment Header) SourceAddress = Tester Link Local Address DestinationAddress = Target Link Local Address Fragment Header NextHeader = 58 (ICMP) FragmentOffset = 0 MFlag = 1 Identification = 32bit (Automatic generation) Payload data = 520 octets from the head of ICMP Echo request =head1 JUDGMENT PASS: ICMP Error Received IPv6 Header Version = 6 Traffic Class = 0 FlowLabel = 0 PayloadLength = 16 NextHeader = 58 (ICMP) SourceAddress = Target Link Local Address Destination Address = Tester Link Local Address ICMP Error Type = 3 (Time Exceeded) Code = 1 (fragment reassembly time exceeded) Checksum = (auto) PayloadData = (Echo Request) =head1 REFERENCE RFC2460 4.5 Fragment Header : The following error conditions may arise when reassembling fragmented packets: =begin html
If insufficient fragments are received to complete reassembly of a packet within 60 seconds of the reception of the first-arriving fragment of that packet, reassembly of that packet must be abandoned and all the fragments that have been received for that packet must be discarded. If the first fragment (i.e., the one with a Fragment Offset of zero) has been received, an ICMP Time Exceeded -- Fragment Reassembly Time Exceeded message should be sent to the source of that fragment.=end html =head1 SEE ALSO perldoc V6evalTool =cut