dadada/ns-3-leo
dadada/ns-3-leo
1
0
Fork 0
mirror of https://gitlab.ibr.cs.tu-bs.de/tschuber/ns-3-leo.git synced 2025-06-08 10:03:58 +02:00
Code Issues Releases Wiki Activity

fixup: broadcast hack

Browse source
This commit is contained in:
Tim Schubert 2020-06-27 21:16:57 +02:00
parent 51b110bf68
commit 603d8ccf70
4 changed files with 71 additions and 39 deletions
Download patch file Download diff file Expand all files Collapse all files

94
model/leo-mock-channel.cc
View file

@ -37,52 +37,80 @@ LeoMockChannel::~LeoMockChannel()
bool
LeoMockChannel::TransmitStart (Ptr<const Packet> p,
uint32_t devId,
Address dst,
Time txTime)
uint32_t devId,
Address dst,
Time txTime)
{
// Find devices joined to channel
Ptr<MockNetDevice> srcDev = DynamicCast<MockNetDevice> (GetDevice (devId));
if (srcDev == 0)
{
NS_LOG_ERROR ("Source device unknown");
return false;
}
bool isBroadcast = (srcDev->GetBroadcast () == dst);
bool toSatellite = m_groundDevices.find (srcDev->GetAddress ()) != m_groundDevices.end ();
// Hack for NDP and ARP caches
// TODO check if NDP or ARP address
bool isBroadcast = (m_groundDevices.find (dst) == m_groundDevices.end ()
&& m_satelliteDevices.find (dst) == m_satelliteDevices.end ());
bool fromGround = m_groundDevices.find (srcDev->GetAddress ()) != m_groundDevices.end ();
if (isBroadcast)
{
NS_LOG_DEBUG (">>>broadcast for " << srcDev->GetAddress () << " -> " << dst);
// Broadcast hack for ARP and neighbor cache
// TODO remove if found a way to fill neighbor cache / ARP by hand
for (uint32_t i = 0; i < GetNDevices (); i++)
{
// TODO deliver only to devices in the same beam
Deliver (p, srcDev, DynamicCast<MockNetDevice> (GetDevice (i)), txTime);
}
if (fromGround)
{
for (DeviceIndex::iterator it = m_satelliteDevices.begin ();
it != m_satelliteDevices.end ();
it++)
{
// TODO deliver only to devices in the same beam
NS_LOG_DEBUG ("from ground " << srcDev->GetAddress () << " -> " << it->second->GetAddress ());
Deliver (p, srcDev, it->second, txTime);
}
}
else
{
for (DeviceIndex::iterator it = m_groundDevices.begin ();
it != m_groundDevices.end ();
it++)
{
// TODO deliver only to devices in the same beam
NS_LOG_DEBUG ("from space " << srcDev->GetAddress () << " -> " << it->second->GetAddress ());
Deliver (p, srcDev, it->second, txTime);
}
}
}
else
{
if (toSatellite)
{
// Satellites can always directly be addresses
// Assume beams are narrow enough to not also receive the signal at other
// satellites for performance reasons.
DeviceIndex::iterator it = m_satelliteDevices.find (dst);
if (it == m_satelliteDevices.end ())
{
NS_LOG_LOGIC (this << "unable to find satellite with address " << dst);
return false;
}
Deliver (p, srcDev, it->second, txTime);
}
if (fromGround)
{
// Satellites can always directly be addresses
// Assume beams are narrow enough to not also receive the signal at other
// satellites for performance reasons.
DeviceIndex::iterator it = m_satelliteDevices.find (dst);
if (it == m_satelliteDevices.end ())
{
NS_LOG_ERROR ("unable to find satellite with address " << dst);
return false;
}
NS_LOG_DEBUG ("BOOOOM " << srcDev->GetAddress () << " -> " << dst);
return Deliver (p, srcDev, it->second, txTime);
}
else
// space to ground delivers to everything within the beam
{
for (DeviceIndex::iterator it = m_groundDevices.begin ();
it != m_groundDevices.end ();
it++)
{
// TODO deliver only to devices in the same beam
Deliver (p, srcDev, it->second, txTime);
}
}
// space to ground delivers to everything within the beam
{
for (DeviceIndex::iterator it = m_groundDevices.begin ();
it != m_groundDevices.end ();
it++)
{
// TODO deliver only to devices in the same beam
Deliver (p, srcDev, it->second, txTime);
}
}
}
return true;