[ns] Drop-Tail Queue

[amjad ali]

Assalam-O-Alaiqum 
   
  i am working on ns-2, in my assignment i have to change the "dequeue" method of Drop-Tail queue from dropfront to droptail.
   
  suppose in queue the packets are enqueued as fallow.
  p1 p2 p3 p4
   in droptail queue "dequeue" method it dequeue them in the same order as fallow.
  p1 p2 p3 p4
   
  but i want to dequeue in thr order as fallow.
  p4 p3 p2 p1
   
  please help me regarding this issue.
   
  Amjad Ali
  COMSATS Pakistan
   

       
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