[Click] nsclick + tracefile strangeness

[David Bath]

Hey Bart,

Using the simple lan script: 

elementclass DumbRouter {
  $myaddr, $myaddr_ethernet |

  class :: Classifier(12/0806 20/0001,12/0806 20/0002, -);
  mypackets :: IPClassifier(dst host $myaddr,-);
  myarpquerier :: ARPQuerier($myaddr,$myaddr_ethernet);
  myarpresponder :: ARPResponder($myaddr $myaddr_ethernet);
  ethout :: Queue -> ToSimDevice(eth0);

  FromSimDevice(eth0,4096)
	-> Print(eth0,64)
	-> ToDump(in_eth0,PER_NODE 1)
	-> HostEtherFilter($myaddr_ethernet)
	-> class;
	
  // ARP queries from other nodes go to the ARP responder module
  class[0] -> myarpresponder;

  // ARP responses go to our query module
  class[1] -> [1]myarpquerier;

  // All other packets get checked to see if they're meant for us
  class[2]				
	-> Strip(14)
	-> CheckIPHeader
	-> MarkIPHeader
	-> GetIPAddress(16)
	-> mypackets; 

  // Packets for us go to "tap0" which sends them to the kernel
  mypackets[0]
	-> IPPrint(tokernel) 
	-> ToDump(tokernel,2000,IP,PER_NODE 1) 
	-> ToSimDevice(tap0,IP);

  // Packets for other folks or broadcast packets get discarded
  mypackets[1]
	-> Print(discard,64)
	-> ToDump(discard,2000,PER_NODE 1)
	-> Discard;

  // Packets sent out by the "kernel" get pushed into the ARP query module
  FromSimDevice(tap0,4096)
	-> CheckIPHeader 
	-> IPPrint(fromkernel) 
	-> ToDump(fromkernel,2000,IP,PER_NODE 1)
	-> GetIPAddress(16)
	-> myarpquerier;

  // Both the ARP query and response modules send data out to
  // the simulated network device, eth0.
  myarpquerier
	-> Print(fromarpquery,64)
	-> ToDump(out_arpquery,PER_NODE 1)
	-> ethout;

  myarpresponder
	-> Print(arpresponse,64)
	-> ToDump(out_arprespond,PER_NODE 1)
	-> ethout;
}


u :: DumbRouter(eth0,eth0);

-----Original Message-----
From: click-bounces at pdos.csail.mit.edu [mailto:click-bounces at pdos.csail.mit.edu] On Behalf Of Bart Braem
Sent: 02 March 2007 12:52
To: click at pdos.csail.mit.edu
Subject: Re: [Click] nsclick + tracefile strangeness

On Friday 02 March 2007 13:14, David Bath wrote:
> One further thing that's a bit odd is in the Click dump files...
> I'm sending from node0 --> node3.  The fromkernel and tokernel dumps 
> are as expected, but node0_out_arpquery seems to also have all the 
> data packets in it (as well as the arp queries!).  Has anyone seen 
> this before, or got any thoughts on it?

Which script do you use? Most probably you log in the wrong place.

Regards,
Bart
--
Bart Braem
PATS research group
Dept. of Mathematics and Computer Sciences University of Antwerp Campus Middelheim, G3.30 Middelheimlaan 1 B-2020 Antwerpen, Belgium
Phone: +32 (0)3 265.32.91
Fax: +32 (0)3 265.37.77
Web: www.pats.ua.ac.be/bart.braem