Can I process before drop?

[Lee Kyeseon <kslee@ccl.chungnam.ac.kr>]

Hi, all

I want to process some before packeted dropped.
so I added following code to sfq.cc
   ---------
   void SFQ::enque(Packet* pkt)
  {
     if ((used >= (left >> 1))
        || (left < buckets_ && used > fairshare)
        || (left <= 0)) {
           ICMPMsg->dropped_++ ;
          drop(pkt);
   }
   ---------
but, ns give me following message.
   _________
   Segmentation fault(Core Dumped)
   _________

When I asked like this before, Tarik answered that might be happening because packets accumulate a a certain point in my program and they are not dropped nor do they reach destination.

But, I don't understand Why packets accumulated

Could you tell me?

--
Lee Kyeseon
Computer Communications Lab., CNU
Tel: +82-42-821-7792