blob: df4607d808e1f3a6a93b70541fb1da8b08e3eae0 [file] [log] [blame]
/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
/*
* Copyright (c) 2011 University of California, Los Angeles
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation;
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
*/
#include "per-fib-limits.h"
#include "ns3/ndn-interest-header.h"
#include "ns3/ndn-content-object-header.h"
#include "ns3/ndn-pit.h"
#include "ns3/ndn-pit-entry.h"
#include "ns3/assert.h"
#include "ns3/log.h"
#include "ns3/simulator.h"
#include "ns3/random-variable.h"
#include "ns3/double.h"
#include <boost/foreach.hpp>
#include <boost/lambda/lambda.hpp>
#include <boost/lambda/bind.hpp>
namespace ll = boost::lambda;
NS_LOG_COMPONENT_DEFINE ("ndn.fw.PerFibLimits");
namespace ns3 {
namespace ndn {
namespace fw {
NS_OBJECT_ENSURE_REGISTERED (PerFibLimits);
TypeId
PerFibLimits::GetTypeId (void)
{
static TypeId tid = TypeId ("ns3::ndn::fw::PerFibLimits")
.SetGroupName ("Ndn")
.SetParent <super> ()
.AddConstructor <PerFibLimits> ()
;
return tid;
}
PerFibLimits::PerFibLimits ()
{
}
void
PerFibLimits::DoDispose ()
{
super::DoDispose ();
// m_decayLimitsEvent.Cancel ();
}
void
PerFibLimits::RemoveFace (Ptr<Face> face)
{
super::RemoveFace (face);
for (PitQueueMap::iterator item = m_pitQueues.begin ();
item != m_pitQueues.end ();
item ++)
{
item->second.Remove (face);
}
m_pitQueues.erase (face);
}
bool
PerFibLimits::TrySendOutInterest (Ptr<Face> inFace,
Ptr<Face> outFace,
Ptr<const InterestHeader> header,
Ptr<const Packet> origPacket,
Ptr<pit::Entry> pitEntry)
{
NS_LOG_FUNCTION (this << pitEntry->GetPrefix ());
// totally override all (if any) parent processing
pit::Entry::out_iterator outgoing =
pitEntry->GetOutgoing ().find (outFace);
if (outgoing != pitEntry->GetOutgoing ().end ())
{
// just suppress without any other action
return false;
}
// if (pitEntry->GetFibEntry ()->GetLimits ().IsBelowLimit ())
// {
// if (outFace->GetLimits ().IsBelowLimit ())
// {
// pitEntry->AddOutgoing (outFace);
// return true;
// }
// else
// {
// NS_LOG_DEBUG ("Face limit. Reverting back per-prefix allowance");
// pitEntry->GetFibEntry ()->GetLimits ().RemoveOutstanding ();
// }
// }
if (outFace->GetLimits ().IsBelowLimit ())
{
pitEntry->AddOutgoing (outFace);
//transmission
Ptr<Packet> packetToSend = origPacket->Copy ();
outFace->Send (packetToSend);
DidSendOutInterest (outFace, header, origPacket, pitEntry);
return true;
}
else
{
NS_LOG_DEBUG ("Face limit");
}
bool enqueued = m_pitQueues[outFace].Enqueue (inFace, pitEntry);
if (enqueued)
{
NS_LOG_DEBUG ("PIT entry is enqueued for delayed processing. Telling that we forwarding possible");
return true;
}
else
return false;
}
void
PerFibLimits::WillEraseTimedOutPendingInterest (Ptr<pit::Entry> pitEntry)
{
NS_LOG_FUNCTION (this << pitEntry->GetPrefix ());
super::WillEraseTimedOutPendingInterest (pitEntry);
PitQueue::Remove (pitEntry);
for (pit::Entry::out_container::iterator face = pitEntry->GetOutgoing ().begin ();
face != pitEntry->GetOutgoing ().end ();
face ++)
{
face->m_face->GetLimits ().RemoveOutstanding ();
}
ProcessFromQueue ();
// pitEntry->GetFibEntry ()->GetLimits ().RemoveOutstanding ();
}
void
PerFibLimits::WillSatisfyPendingInterest (Ptr<Face> inFace,
Ptr<pit::Entry> pitEntry)
{
NS_LOG_FUNCTION (this << pitEntry->GetPrefix ());
super::WillSatisfyPendingInterest (inFace, pitEntry);
PitQueue::Remove (pitEntry);
for (pit::Entry::out_container::iterator face = pitEntry->GetOutgoing ().begin ();
face != pitEntry->GetOutgoing ().end ();
face ++)
{
face->m_face->GetLimits ().RemoveOutstanding ();
}
ProcessFromQueue ();
// pitEntry->GetFibEntry ()->GetLimits ().RemoveOutstanding ();
}
void
PerFibLimits::ProcessFromQueue ()
{
for (PitQueueMap::iterator queue = m_pitQueues.begin ();
queue != m_pitQueues.end ();
queue++)
{
if (queue->second.IsEmpty ())
continue;
// if (outFace->GetLimits ().IsBelowLimit ())
// {
// pitEntry->AddOutgoing (outFace);
// }
// else
// {
// // do nothing
// }
}
}
// void
// PerFibLimits::DidReceiveValidNack (Ptr<Face> inFace,
// uint32_t nackCode,
// Ptr<pit::Entry> pitEntry)
// {
// // super::DidReceiveValidNack (inFace, nackCode, pitEntry);
// // ??
// }
// void
// PerFibLimits::DecayLimits ()
// {
// for (Ptr<fib::Entry> entry = m_fib->Begin ();
// entry != m_fib->End ();
// entry = m_fib->Next (entry))
// {
// entry->GetLimits ().DecayCurrentLimit ();
// }
// m_decayLimitsEvent = Simulator::Schedule (Seconds (1.0), &PerFibLimits::DecayLimits, this);
// }
} // namespace fw
} // namespace ndn
} // namespace ns3