114 lines
3.3 KiB
Plaintext
114 lines
3.3 KiB
Plaintext
// nsclick-lan-single-interface.click
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//
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// Copyright (c) 2011, Deutsche Telekom Laboratories
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License version
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// 2 as published by the Free Software Foundation;
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// Author: Ruben Merz <ruben@net.t-labs.tu-berlin.de>
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//
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// This is a single host Click configuration for a LAN.
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// The node broadcasts ARP requests if it wants to find a destination
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// address, and it responds to ARP requests made for it.
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elementclass LanSimHost {
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$ipaddr, $hwaddr |
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cl::Classifier(12/0806 20/0001,12/0806 20/0002, -);
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forhost::IPClassifier(dst host $ipaddr,-);
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arpquerier::ARPQuerier(eth0);
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arpresponder::ARPResponder(eth0);
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ethout::Queue
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-> ToDump(out_eth0.pcap,PER_NODE 1)
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-> ToSimDevice(eth0);
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// All packets received on eth0 are silently
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// dropped if they are destined for another location
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FromSimDevice(eth0,SNAPLEN 4096)
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-> ToDump(in_eth0.pcap,PER_NODE 1,ENCAP ETHER)
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-> cl;
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// ARP queries from other nodes go to the ARP responder element
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cl[0] -> arpresponder;
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// ARP responses go to our ARP query element
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cl[1] -> [1]arpquerier;
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// All other packets get checked whether they are meant for us
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cl[2]
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-> Strip(14)
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-> CheckIPHeader2
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-> MarkIPHeader
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-> GetIPAddress(16) // Sets destination IP address annotation from packet data
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-> forhost;
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// Packets for us are pushed outside
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forhost[0]
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->[0]output;
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// Packets for other folks or broadcast packets get sent to output 1
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forhost[1]
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-> ToDump(discard.pcap,2000,PER_NODE 1,ENCAP IP)
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-> [1]output;
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// Incoming packets get pushed into the ARP query module
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input[0]
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-> arpquerier;
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// Both the ARP query and response modules send data out to
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// the simulated network device, eth0.
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arpquerier
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-> ToDump(out_arpquery.pcap,PER_NODE 1)
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-> ethout;
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arpresponder
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-> ToDump(out_arprespond.pcap,PER_NODE 1)
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-> ethout;
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}
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elementclass TapSimHost {
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$dev |
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// Packets go to "tap0" which sends them to the kernel
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input[0]
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-> ToDump(tokernel.pcap,2000,IP,PER_NODE 1)
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-> ToSimDevice($dev,IP);
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// Packets sent out by the "kernel" get pushed outside
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FromSimDevice($dev,SNAPLEN 4096)
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-> CheckIPHeader2
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-> ToDump(fromkernel.pcap,2000,IP,PER_NODE 1)
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-> GetIPAddress(16)
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-> [0]output;
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}
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// Instantiate elements
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lan::LanSimHost(eth0:ip,eth0:eth);
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kernel::TapSimHost(tap0);
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// Users can do some processing between the two elements
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lan[0] -> kernel;
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kernel -> lan;
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// Packets for others or broadcasts are discarded
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lan[1] -> Discard;
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// It is mandatory to use an IPRouteTable element with ns-3-click
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// (but we do not use it in this example)
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rt :: LinearIPLookup (172.16.1.0/24 0.0.0.0 1);
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// We are actually not using the routing table
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Idle () -> rt;
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rt[0] -> Discard;
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rt[1] -> Discard;
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