unicastposttxstate.cc

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/*
 * Copyright (c) 2013-2014 - Adjacent Link LLC, Bridgewater, New Jersey
 * Copyright (c) 2008 - DRS CenGen, LLC, Columbia, Maryland
 * All rights reserved.
 *
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 * modification, are permitted provided that the following conditions
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 *
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 *   from this software without specific prior written permission.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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#include "unicastposttxstate.h"

#include "unicastpretxstate.h"
#include "idletxstate.h"

#include "maclayer.h"

EMANE::Models::IEEE80211ABG::UnicastPostTxState::UnicastPostTxState()
{ }

EMANE::Models::IEEE80211ABG::UnicastPostTxState::~UnicastPostTxState()
{ }


bool 
EMANE::Models::IEEE80211ABG::UnicastPostTxState::process(MACLayer * pMgr, DownstreamQueueEntry &entry)
{
  if(entry.bCollisionOccured_ == true)
   {
      if(entry.numRetries_ >= entry.maxRetries_)
        {
          // change state to idle tx state
          changeState(pMgr, IdleTxStateSingleton::instance());

          // set discard due to retries
          pMgr->getStatistics().incrementDownstreamUnicastDataDiscardDueToRetries();

          // drop
          return false;
        }
      else
        {
          // bump num retries
          ++entry.numRetries_;

          // set pre/post tx delay time
          pMgr->setDelayTime(entry);

          // change state to unicast pre tx state
          changeState(pMgr, UnicastPreTxStateSingleton::instance());

          // retry
          return true;
       }
   }
  else
   {
      // change state to idle tx state
      changeState(pMgr, IdleTxStateSingleton::instance());

      // done
      return false;
   }
}




std::pair<EMANE::TimePoint,bool>
EMANE::Models::IEEE80211ABG::UnicastPostTxState::getWaitTime(DownstreamQueueEntry & entry)
{
  // return post tx delay time
  return {entry.durationMicroseconds_ + entry.postTxDelayMicroseconds_ + entry.txTime_,true};
}


const char *
EMANE::Models::IEEE80211ABG::UnicastPostTxState::statename()
{
  return "UnicastPostTxState";
}