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csma version of install star and example

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This commit is contained in:
Craig Dowell
2008-10-24 17:29:26 -07:00
parent 017ecaeb3d
commit af16634027
4 changed files with 251 additions and 0 deletions
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13
src/helper/csma-helper.cc
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@@ -199,6 +199,19 @@ CsmaHelper::Install (const NodeContainer &c, Ptr<CsmaChannel> channel)
return container;
}
void
CsmaHelper::InstallStar (Ptr<Node> hub, NodeContainer spokes,
NetDeviceContainer& hubDevices, NetDeviceContainer& spokeDevices)
{
for (uint32_t i = 0; i < spokes.GetN (); ++i)
{
NodeContainer nodes (hub, spokes.Get (i));
NetDeviceContainer nd = Install (nodes);
hubDevices.Add (nd.Get (0));
spokeDevices.Add (nd.Get (1));
}
}
void
CsmaHelper::EnqueueEvent (Ptr<PcapWriter> writer, Ptr<const Packet> packet)
{

33
src/helper/csma-helper.h
View File

@@ -179,6 +179,39 @@ public:
*/
NetDeviceContainer Install (const NodeContainer &c, Ptr<CsmaChannel> channel);
/**
* \brief Make a star network topology.
*
* Given a pointer to a node that will become the hub of the star, and a
* NodeContainer containing pointers to the nodes that will become the
* spokes; we construct CSMA net devices on the hub (corresponding to the
* spokes) and store them in the hubDevices NetDeviceContainer. We add a
* net device to each spoke node and store them in the spokeDevices
* NetDeviceContainer. A CSMA is created for each spoke.
*
* Usually when one thinks of a star network, one thinks of point-to-point
* links. We're just using a single pair of devices on a multi-point-to-point
* network "drops" as the link. You are free to add any number of other
* devices on the link if you want.
*
* The ordering of the devices in the hubDevices container is according to
* the order of the spokes container -- that is, hubDevices[0] will be the
* net device used on the hub that talks to spokes[0]. the container entry
* spokeDevices[0] will have the device that hubDevices[0] talks to -- those
* two devices are the ones that connect hub to spokes[0].
*
* \param hub The central node of the star network
* \param spokes A NodeContainer of the nodes that will be the spoke (leaf)
* nodes
* \param hubDevices A NetDeviceContainer that will be filled with pointers
* to the point-to-point net devices created on the hub.
* \param spokeDevices A NetDeviceContainer that will be filled with pointers
* to the point-to-point net devices created on each of
* the spokes.
*/
void InstallStar (Ptr<Node> hub, NodeContainer spokes,
NetDeviceContainer& hubDevices, NetDeviceContainer& spokeDevices);
private:
static void RxEvent (Ptr<PcapWriter> writer, Ptr<const Packet> packet);
static void EnqueueEvent (Ptr<PcapWriter> writer, Ptr<const Packet> packet);