[英]How can I combine my customize module with Omnet++INET's simple module
As all the simple modules' behavior like 80211 mac layer has been defined in the INET module. 在INET模块中已经定义了所有简单模块的行为,例如80211 mac层。 If I want to add a customize layer between mac layer and network layer to handle network coding.
如果要在mac层和网络层之间添加自定义层以处理网络编码。 How can I combine the customize module and INET's simple module ?
如何结合定制模块和INET的简单模块?
To add a new module between network layer and MAC layer I suggest creating a modified host in a new project. 要在网络层和MAC层之间添加新模块,我建议在新项目中创建修改后的主机。 For
OMNeT++
4.6 and INET
3.2.4 do the following: 对于
OMNeT++
4.6和INET
3.2.4,请执行以下操作:
OMNeT++
empty project with src and simulation directories. OMNeT++
空项目。 Properties
| Properties
| Project References
and select inet
. Project References
然后选择inet
。 src
and select New
| src
并选择New
| Simple module
. Simple module
。 Call it DummyLayer.ned
. DummyLayer.ned
。 Open DummyLayer.ned
and add: 打开
DummyLayer.ned
并添加:
@namespace(inet); import inet.linklayer.contract.INic; simple DummyLayer like INic { parameters: @display("i=block/buffer"); // here you can add others parameter gates: input ifIn; output ifOut; input upperLayerIn; output upperLayerOut; }
Modify DummyLayer.h
and DummyLayer.cc
(this module just passes every message from up and down, as well as increments counters): 修改
DummyLayer.h
和DummyLayer.cc
(此模块仅上下传递每条消息,以及递增计数器):
// DummyLayer.h #include <omnetpp.h> namespace inet { class DummyLayer: public cSimpleModule { protected: virtual void initialize(); virtual void handleMessage(cMessage *msg); private: int upNumber; int downNumber; }; } //namespace //---------------------------------------------- // DummyLayer.cc #include "DummyLayer.h" namespace inet { Define_Module(DummyLayer); void DummyLayer::initialize() { upNumber = 0; downNumber = 0; } void DummyLayer::handleMessage(cMessage *msg) { if (msg->arrivedOn("upperLayerIn")) { send(msg, "ifOut"); downNumber++; } else if (msg->arrivedOn("ifIn")) { send(msg, "upperLayerOut"); upNumber++; } else { error("Incorrect gate"); } char buf[128]; sprintf(buf, "up: %d, down: %d", upNumber, downNumber); getDisplayString().setTagArg("t", 0, buf); } } //namespace
Create a new compound module for own host, call it WirelessHostEx.ned
: 为自己的主机创建一个新的复合模块,将其称为
WirelessHostEx.ned
:
import inet.common.lifecycle.NodeStatus; import inet.linklayer.contract.IWiredNic; import inet.linklayer.contract.IWirelessNic; import inet.linklayer.loopback.LoopbackInterface; import inet.mobility.contract.IMobility; import inet.networklayer.contract.IRoutingTable; import inet.networklayer.common.InterfaceTable; import inet.networklayer.contract.INetworkLayer; import inet.power.contract.IEnergyStorage; import inet.power.contract.IEnergyGenerator; import inet.applications.contract.IPingApp; import inet.applications.contract.ISCTPApp; import inet.applications.contract.ITCPApp; import inet.applications.contract.IUDPApp; import inet.transportlayer.contract.ISCTP; import inet.transportlayer.contract.ITCP; import inet.transportlayer.contract.IUDP; import inet.node.inet.INetworkNode; module WirelessHostEx like INetworkNode { parameters: @networkNode; @display("i=device/wifilaptop"); @labels(wireless-node); bool hasStatus = default(false); int numExtInterfaces = default(0); int numRadios = 1; int numTunInterfaces = default(0); string mobilityType = default(numRadios > 0 ? "StationaryMobility" : ""); string networkLayerType = default("IPv4NetworkLayer"); string routingTableType = default("IPv4RoutingTable"); bool forwarding = default(true); bool multicastForwarding = default(false); string energyStorageType = default(""); string energyGeneratorType = default(""); routingTable.forwarding = forwarding; routingTable.multicastForwarding = multicastForwarding; *.interfaceTableModule = default(absPath(".interfaceTable")); *.routingTableModule = default(routingTableType != "" ? absPath(".routingTable") : ""); *.energySourceModule = default(energyStorageType != "" ? absPath(".energyStorage") : ""); *.mobilityModule = default(mobilityType != "" ? absPath(".mobility") : ""); int numTcpApps = default(0); int numUdpApps = default(0); int numPingApps = default(0); bool hasTcp = default(numTcpApps > 0); bool hasUdp = default(numUdpApps > 0); string tcpType = default(firstAvailableOrEmpty("TCP", "TCP_lwIP", "TCP_NSC")); // tcp implementation (eg ~TCP, ~TCP_lwIP, ~TCP_NSC) or ~TCPSpoof string udpType = default(firstAvailableOrEmpty("UDP")); forwarding = default(false); // disable routing by default networkLayer.proxyARP = default(false); gates: input radioIn[numRadios] @directIn; inout pppg[] @labels(PPPFrame-conn); inout ethg[] @labels(EtherFrame-conn); submodules: status: NodeStatus if hasStatus { @display("p=50,50"); } energyStorage: <energyStorageType> like IEnergyStorage if energyStorageType != "" { parameters: @display("p=50,100;i=block/plug;is=s"); } energyGenerator: <energyGeneratorType> like IEnergyGenerator if energyGeneratorType != "" { parameters: @display("p=50,150;i=block/plug;is=s"); } mobility: <mobilityType> like IMobility if mobilityType != "" { parameters: @display("p=53,200"); } networkLayer: <networkLayerType> like INetworkLayer { parameters: @display("p=329,287;q=queue"); } routingTable: <routingTableType> like IRoutingTable if routingTableType != "" { parameters: @display("p=53,250;is=s"); } interfaceTable: InterfaceTable { parameters: @display("p=53,300;is=s"); } lo0: LoopbackInterface { @display("p=78,406"); } wlan[numRadios]: <default("Ieee80211Nic")> like IWirelessNic { parameters: @display("p=216,406,row,60;q=queue"); } eth[sizeof(ethg)]: <default("EthernetInterface")> like IWiredNic { parameters: @display("p=368,406,row,60;q=txQueue"); } ppp[sizeof(pppg)]: <default("PPPInterface")> like IWiredNic { parameters: @display("p=558,406,row,60;q=txQueue"); } tcpApp[numTcpApps]: <> like ITCPApp { parameters: @display("p=147,54,row,60"); } tcp: <tcpType> like ITCP if hasTcp { parameters: @display("p=147,141"); } udpApp[numUdpApps]: <> like IUDPApp { parameters: @display("p=329,54,row,60"); } udp: <udpType> like IUDP if hasUdp { parameters: @display("p=329,141"); } pingApp[numPingApps]: <default("PingApp")> like IPingApp { parameters: @display("p=635,141,row,60"); } dummy: DummyLayer { @display("p=273,350"); } connections allowunconnected: radioIn[0] --> { @display("m=s"); } --> wlan[0].radioIn; // the order of connections is important here wlan[0].upperLayerOut --> dummy.ifIn; dummy.upperLayerOut --> networkLayer.ifIn++; wlan[0].upperLayerIn <-- dummy.ifOut; dummy.upperLayerIn <-- networkLayer.ifOut++; networkLayer.ifOut++ --> lo0.upperLayerIn; lo0.upperLayerOut --> networkLayer.ifIn++; for i=0..sizeof(ethg)-1 { ethg[i] <--> { @display("m=s"); } <--> eth[i].phys; eth[i].upperLayerOut --> networkLayer.ifIn++; eth[i].upperLayerIn <-- networkLayer.ifOut++; } for i=0..sizeof(pppg)-1 { pppg[i] <--> { @display("m=s"); } <--> ppp[i].phys; ppp[i].upperLayerOut --> networkLayer.ifIn++; ppp[i].upperLayerIn <-- networkLayer.ifOut++; } for i=0..numTcpApps-1 { tcpApp[i].tcpOut --> tcp.appIn++; tcpApp[i].tcpIn <-- tcp.appOut++; } tcp.ipOut --> networkLayer.transportIn++ if hasTcp; tcp.ipIn <-- networkLayer.transportOut++ if hasTcp; for i=0..numUdpApps-1 { udpApp[i].udpOut --> udp.appIn++; udpApp[i].udpIn <-- udp.appOut++; } udp.ipOut --> networkLayer.transportIn++ if hasUdp; udp.ipIn <-- networkLayer.transportOut++ if hasUdp; for i=0..numPingApps-1 { networkLayer.pingOut++ --> pingApp[i].pingIn; networkLayer.pingIn++ <-- pingApp[i].pingOut; } }
An own host module is necessary because StandardHost
from INET
creates connection between MAC and network layer automatically and it is not possible to add own module between these layers. 必须拥有自己的主机模块,因为
INET
StandardHost
会自动在MAC和网络层之间创建连接,并且不可能在这些层之间添加自己的模块。
Create a network (for test): 创建一个网络(用于测试):
import inet.networklayer.configurator.ipv4.IPv4NetworkConfigurator; import inet.physicallayer.ieee80211.packetlevel.Ieee80211ScalarRadioMedium; import inet.node.wireless.AccessPoint; network WirelessNetwork { submodules: configurator: IPv4NetworkConfigurator { @display("p=33,81"); } radioMedium: Ieee80211ScalarRadioMedium { @display("p=33,30"); } node0: WirelessHostEx { @display("p=128,121"); } node1: WirelessHostEx { @display("p=384,115"); } ap: AccessPoint { @display("p=273,54"); } }
Modify omnetpp.ini
: 修改
omnetpp.ini
:
[General] network = WirelessNetwork // node0 will send ping to node1 **.node0.numPingApps = 1 **.node0.pingApp[0].destAddr = "node1" // using IP address here is allowed too
After starting the simulation one can see that in each host dummyLayer
send messages forward. 开始仿真后,可以看到在每个主机
dummyLayer
中都dummyLayer
发送消息。
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