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Code Issues Releases Wiki Activity

Prime ND cache

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This commit is contained in:
Tim Schubert 2020-07-01 14:41:49 +02:00
parent 603d8ccf70
commit efa52f8e51
1 changed files with 45 additions and 6 deletions
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51
examples/isl-example.cc
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@ -12,6 +12,43 @@ using namespace ns3;
NS_LOG_COMPONENT_DEFINE ("IslExample");
void PrepareNds (NodeContainer &nodes, Ipv6InterfaceContainer &interfaces)
{
// prepare NDS cache
for (uint32_t i = 0; i < nodes.GetN (); i++)
{
Ptr<Node> node = nodes.Get (i);
Ptr<NetDevice> dev = node->GetDevice (1); // TODO right index?
uint32_t ifIndex = dev->GetIfIndex ();
Ptr<Ipv6L3Protocol> ipv6 = node->GetObject<Ipv6L3Protocol> ();
Ptr<Ipv6Interface> interface = ipv6->GetInterface (ifIndex);
Ptr<NdiscCache> cache = interface->GetNdiscCache ();
for (uint32_t j = 0; j < nodes.GetN (); j++)
{
// every other device
if (i == j)
{
continue;
}
Ptr<NetDevice> otherDevice = nodes.Get (j)->GetDevice (1);
Address address = otherDevice->GetAddress (); // MAC
// and associated address
uint32_t otherIfIndex = otherDevice->GetIfIndex ();
// TODO which address to use? site-local, global, link?
Ipv6Address ipaddr = interfaces.GetAddress (otherIfIndex, 1); // IP
// update cache
NdiscCache::Entry* entry = cache->Lookup (ipaddr);
if (entry == 0)
{
entry = cache->Add (ipaddr);
}
entry->SetMacAddress (address);
}
}
}
int
main (int argc, char *argv[])
{
@ -21,7 +58,7 @@ main (int argc, char *argv[])
Time::SetResolution (Time::NS);
LogComponentEnable ("UdpEchoClientApplication", LOG_LEVEL_INFO);
LogComponentEnable ("UdpEchoServerApplication", LOG_LEVEL_INFO);
LogComponentEnable ("UdpEchoClient", LOG_LEVEL_INFO);
LogComponentEnable ("IslExample", LOG_LEVEL_DEBUG);
NodeContainer nodes;
nodes.Create (3);
@ -42,6 +79,8 @@ main (int argc, char *argv[])
Ipv6InterfaceContainer interfaces = address.Assign (devices);
PrepareNds (nodes, interfaces);
UdpEchoServerHelper echoServer (9);
ApplicationContainer serverApps = echoServer.Install (nodes);
@ -52,12 +91,12 @@ main (int argc, char *argv[])
echoClient.SetAttribute ("PacketSize", UintegerValue (1024));
for (uint32_t i = 1; i < nodes.GetN (); i++)
{
Address destAddress = interfaces.GetAddress (i, 0);
echoClient.SetAttribute ("RemoteAddress", AddressValue (destAddress));
{
Address destAddress = interfaces.GetAddress (i, 0);
echoClient.SetAttribute ("RemoteAddress", AddressValue (destAddress));
clientApps.Add (echoClient.Install (nodes.Get (i-1)));
}
clientApps.Add (echoClient.Install (nodes.Get (i-1)));
}
clientApps.Start (Seconds (2.0));
clientApps.Stop (Seconds (10.0));