#!/usr/bin/perl # # Copyright (C) 2002, 2003, 2004, 2005 Yokogawa Electric Corporation, # INTAP(Interoperability Technology Association for Information # Processing, Japan), 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. # $TINY: LLA_DAD_NAPreDAD_DiffTgt.seq,v 1.6 2002/03/05 03:04:55 masaxmasa Exp $ # ######################################################################## BEGIN { $V6evalTool::TestVersion = '$Name: REL_2_1_2 $ '; } use V6evalTool; use SAA; #------------------------------------------------------ #----- get sequence arguments #------------------------------------------------------ $howto_initNUT="none"; $send = "ok"; foreach (@ARGV) { # How to configure address of NUT? # sample: boot, ra, manual+_GLOBAL0A0N_UCAST /^addrconf=(\S+)/ && do {$SAA::howto_addrconf=$1; next; }; # How to initialize NUT? # sample: none, DADSuccess_boot, DADFail_boot /^init=(\S+)/ && do {$howto_initNUT=$1; next; }; # "none" if send no pakcet to NUT in state DADPostSendNS # sample: ok, none /^send=(\S+)/ && do {$send=$1; next; }; # sequence debug options # sample: qR /^sd=(\S+)/ && do {$seqdebugopt=$1; next; }; seqERROR("Unknown sequence option '$_'"); } #------------------------------------------------------ #----- test condition $IF=Link0; # network interface $max_retry_count = 10; # retry if NUT state becomes DADPostSendNS $max_retry_count = 2 if $SAA::sd =~ /q/; # quick retry $send_interval = 0.1; # 1[sec] time between DAD NS and DAD NS, send to NUT # (RandomDelay is 0-1sec e.g. default RetransTimer 1000msec) $loopcnt=0; ########################################################## #----- Check Target Type $type=$V6evalTool::NutDef{Type}; if($type eq host) { vCPP('-DRFLAG=0'); } if($type eq router) { vCPP('-DRFLAG=1'); } #----- start Capturing vCapture($IF); #----- Store Start time $t0 = time(); #manual address configuration or reboot start time #----- send NA to NUT with interval_time for a couple of minits #----- or wait until receiving a DAD NS from NUT in every interval. vLog("TN transmits DAD NA with different Target address than NUT"); vLog(" and wait DAD NS from NUT for $send_interval [sec],"); vLog(" TN expects to receive DAD NS or NA from NUT for $send_interval [sec],"); vLog(" NUT MUST not detect the address duplication with such packets."); vLog(" Try this process for $SAA::wait_dadns{$SAA::howto_addrconf} [sec]."); do { if ($loopcnt == 0){ #----- initialize NUT vLog("*** Target initialization phase ***"); $rret=vRemote("reboot_async.rmt","","timeout=$SAA::wait_rebootcmd"); vLog("reboot_async.rmt returned status $rret"); # Just send trigger to reboot. vLog("*** Target testing phase ***"); } #--- Send NA vLog("Send NA to other Target: NA_to_all_DiffTgt"); %ret=vSend($IF, DADNA_from_TN_DiffTgt); seqERROR(vErrmsg(%ret)) if $ret{status} != 0 ; if ($loopcnt == 0){ $firstDADnsTime=$ret{sentTime1}; } #--- Wait NS vLog("Waiting for DAD NS or NA: dadns_from_NUT"); %ret=vRecv($IF,$send_interval,0,0,DADNS_from_NUT); if ($ret{recvTime1} > $firstDADnsTime) { vLog("Received packet count=$ret{recvCount}"); } $td = $SAA::wait_dadns{$SAA::howto_addrconf} - (time()-$t0); $td = 0 if $td < 0; vLog("countdown timer: $td [sec]"); $loopcnt++; } while($ret{status}!=0 && $td > 0 ); ################## if ($ret{status} == 0 && $ret{recvFrame} eq DADNS_from_NUT){ #----- if received DAD NS vLog("NUT sent DAD NS"); #----- check if NUT's address is configured vLog("Confirming that NUT had assigned the address....."); vSleep($SAA::RetransTimerSec); if (seqCheckNUTAddrConfigured($IF) eq TRUE) { vLog("OK! NUT assigned the address to the interface."); if ($SAA::DupAddrDetectTransmits == 0) { vLog("But DupAddrDetectTransmits == 0"); seqNG(); }else{ seqOK(); } }else{ vLog("NG! NUT had not assigned the address to the interface."); seqNG(); } } else { # timeout #----- if timeout or could not receive DAD NS vLog("Although $SAA::wait_dadns{$SAA::howto_addrconf}\[sec] has past since NUT's address configured, no DAD NS came from NUT."); #----- check if NUT's address is configured vLog("Confirming that NUT had assigned the address....."); vSleep($SAA::RetransTimerSec); if (seqCheckNUTAddrConfigured($IF) eq TRUE) { vLog("OK! NUT assigned the address to the interface."); if ($SAA::DupAddrDetectTransmits == 0) { seqOK(); }else{ vLog("But DupAddrDetectTransmits != 0"); seqNG(); } }else{ vLog("NG! NUT had not assigned the address to the interface."); seqNG(); } vLog("It seems that NUT has misunderstood to detect address duplication in state DADPreSendNS."); seqNG(); } #end ######################################################################## __END__ =head1 NAME LLA_DAD_NAPreDAD_DiffTgt - check the process when NUT receives DAD NA with different Target address before sending DAD NA. =head1 TARGET All Node =head1 SYNOPSIS LLA_DAD_NAPreDAD_DiffTgt.seq [-tooloption ...] -pkt [addrconf=] -tooloption : v6eval tool option : packet definition file (v6eval tool option) : how to configure address on NUT; boot/reboot =begin html 
 detail of v6eval tool option: see perldoc V6evalTool.pm, perldoc V6evalRemote.pm
=end html =head1 INITIALIZATION =begin html 
 Reboot NUT or Initialize interface of NUT or Initialize IPv6 stack of NUT.
=end html =head1 TEST PROCEDURE =over 1 =item Test for Unicast address configuration The following tests are prepared in this test package. See INDEX file. B NUT performs DAD for its Link-local unicast address made by stateless address autoconfiguration though NUT receives DAD NA which contains different target address before transimitting DAD NS. B TN NUT --------------------------------- Initialize NUT Configure address of NUT (reboot or interface initialization etc...) ==== Action #1: DAD NA =========> ==== #1: DAD NA =========> : : ==== #1: DAD NA =========> name: DADNA_from_TN_DiffTgt TN wait the DAD NS sent from NUT <=== Judgement #1: DAD NS ======= name: DADNS_from_NUT Wait for DupAddrDetectTransmits*RetransTimer Check if NUT's address is configured ==== Action #2: SOL NS =========> name: SOLNS_from_TN_SameTgt <=== Judgement #2: SOL NA ======= name: NA_from_NUT, NA_from_NUT_woTLL =back 1 =head1 JUDGEMENT =over 1 =item Test for Link-local Unicast address autoconfiguration B B Action #1. TN transmits DAD NA which contains different target Address name: DADNA_from_TN_DiffTgt src: TN's Link-local dst: allnode TargetAddress: TN's Link-local RFlag: 0 SFlag: 0 OFlag: 1 OLLOPT: TN's MAC address Judgement #1. NUT MUST transmit DAD NS for its autoconfigured Link-local address. name: DADNS_from_NUT src: ::0 dst: solnode[NUT's tentative Link-local] TargetAddress: NUT's tentative Link-local Action #2. TN transmits SOL NS to check if NUT's address is configured name: SOLNS_from_TN_SameTgt src: TN's Link-local dst: solnode[NUT's Link-local] TargetAddress: NUT's Link-local Judgement #2. NUT MUST transmit SOL NA for its autoconfigured Link-local address. name: NA_from_NUT, NA_from_NUT_woTLL src: NUT's Link-local dst: TN's Link-local TargetAddress: NUT's Link-local RFlag: 0 ( if NUT is a Router then 1) SFlag: 1 OFlag: 1 TLLOPT: NUT's MAC address =back 1 =head1 REFERENCE =begin html 
RFC2462




5.4.  Duplicate Address Detection


   (omit)
   An address on which the duplicate Address Detection Procedure is
   applied is said to be tentative until the procedure has completed
   successfully.  A tentative address is not considered "assigned to an

   interface" in the traditional sense. That is, the interface must
   accept Neighbor Solicitation and Advertisement messages containing
   the tentative address in the Target Address field, but processes such
   packets differently from those whose Target Address matches an
   address assigned to the interface. Other packets addressed to the
   tentative address should be silently discarded.


   (omit)


5.4.2.  Sending Neighbor Solicitation Messages


   Before sending a Neighbor Solicitation, an interface MUST join the
   all-nodes multicast address and the solicited-node multicast address
   of the tentative address.  The former insures that the node receives
   Neighbor Advertisements from other nodes already using the address;
   the latter insures that two nodes attempting to use the same address
   simultaneously detect each other's presence.


   To check an address, a node sends DupAddrDetectTransmits Neighbor
   Solicitations, each separated by RetransTimer milliseconds. The
   solicitation's Target Address is set to the address being checked,
   the IP source is set to the unspecified address and the IP
   destination is set to the solicited-node multicast address of the
   target address.


   If the Neighbor Solicitation is the first message to be sent from an
   interface after interface (re)initialization, the node should delay
   sending the message by a random delay between 0 and
   MAX_RTR_SOLICITATION_DELAY as specified in [DISCOVERY].  This serves
   to alleviate congestion when many nodes start up on the link at the
   same time, such as after a power failure, and may help to avoid race
   conditions when more than one node is trying to solicit for the same
   address at the same time. In order to improve the robustness of the
   Duplicate Address Detection algorithm, an interface MUST receive and
   process datagrams sent to the all-nodes multicast address or
   solicited-node multicast address of the tentative address while
   delaying transmission of the initial Neighbor Solicitation.


   (omit)
=end html =head1 SEE ALSO =begin html 
 detail of v6eval tool option: see perldoc V6evalTool.pm, perldoc V6evalRemote.pm
=end html =cut