mirror of
https://gitlab.ibr.cs.tu-bs.de/tschuber/ns-3-leo.git
synced 2025-06-08 18:13:57 +02:00
119 lines
2.9 KiB
C++
119 lines
2.9 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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#include "ns3/object.h"
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#include "ns3/ptr.h"
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#include "ns3/log.h"
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#include "ns3/enum.h"
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#include "leo-mock-net-device.h"
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#include "leo-mock-channel.h"
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namespace ns3 {
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NS_LOG_COMPONENT_DEFINE ("LeoMockChannel");
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NS_OBJECT_ENSURE_REGISTERED (LeoMockChannel);
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TypeId
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LeoMockChannel::GetTypeId (void)
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{
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static TypeId tid = TypeId ("ns3::LeoMockChannel")
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.SetParent<MockChannel> ()
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.SetGroupName ("Leo")
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.AddConstructor<LeoMockChannel> ()
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;
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return tid;
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}
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LeoMockChannel::LeoMockChannel() :
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MockChannel ()
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{
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NS_LOG_FUNCTION_NOARGS ();
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}
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LeoMockChannel::~LeoMockChannel()
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{
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}
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bool
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LeoMockChannel::TransmitStart (Ptr<const Packet> p,
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uint32_t devId,
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Address dst,
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Time txTime)
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{
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// Find devices joined to channel
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Ptr<MockNetDevice> srcDev = DynamicCast<MockNetDevice> (GetDevice (devId));
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if (srcDev == 0)
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{
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NS_LOG_ERROR ("Source device unknown");
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return false;
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}
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bool fromGround = m_groundDevices.find (srcDev->GetAddress ()) != m_groundDevices.end ();
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if (fromGround)
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{
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// Satellites can always directly be addresses
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// Assume beams are narrow enough to not also receive the signal at other
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// satellites for performance reasons.
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DeviceIndex::iterator it = m_satelliteDevices.find (dst);
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if (it == m_satelliteDevices.end ())
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{
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NS_LOG_ERROR ("unable to find satellite with address " << dst);
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return false;
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}
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return Deliver (p, srcDev, it->second, txTime);
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}
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else if (srcDev->IsBroadcast () || srcDev->IsMulticast ())
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// space to ground delivers to everything within the beam
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{
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DeviceIndex::iterator it = m_groundDevices.find (dst);
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if (it == m_groundDevices.end ())
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{
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NS_LOG_ERROR ("unable to find satellite with address " << dst);
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return false;
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}
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for (DeviceIndex::iterator it = m_groundDevices.begin ();
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it != m_groundDevices.end ();
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it++)
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{
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// TODO deliver only to devices in the same beam
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Deliver (p, srcDev, it->second, txTime);
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}
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}
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return true;
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}
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int32_t
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LeoMockChannel::Attach (Ptr<MockNetDevice> device)
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{
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Ptr<LeoMockNetDevice> leodev = DynamicCast<LeoMockNetDevice> (device);
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// Add to index
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switch (leodev->GetDeviceType ())
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{
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case LeoMockNetDevice::DeviceType::GND:
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m_groundDevices[leodev->GetAddress ()] = leodev;
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break;
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case LeoMockNetDevice::DeviceType::SAT:
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m_satelliteDevices[leodev->GetAddress ()] = leodev;
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break;
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default:
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break;
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}
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return MockChannel::Attach (device);
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}
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bool
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LeoMockChannel::Detach (uint32_t deviceId)
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{
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Ptr<NetDevice> dev = GetDevice (deviceId);
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m_groundDevices.erase (dev->GetAddress ());
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m_satelliteDevices.erase (dev->GetAddress ());
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return MockChannel::Detach (deviceId);
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}
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}; // namespace ns3
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