/Users/yzchen/ns/ns-allinone-2.33/ns-2.33/xcp/xcp.h

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 * @(#) $Header: /cvsroot/nsnam/ns-2/xcp/xcp.h,v 1.9 2006/05/30 20:30:30 pradkin Exp $
 */

#ifndef NS_XCP
#define NS_XCP

#include "packet.h"
#include "queue.h"
#include "xcpq.h"


enum {XCPQ=0, TCPQ=1, OTHERQ=2, MAX_QNUM};

// code points for separating XCP/TCP flows
#define CP_XCP 10
#define CP_TCP 20
#define CP_OTHER 30


class XCPWrapQ : public Queue {
public:
        XCPWrapQ();
        int command(int argc, const char*const* argv);
        void recv(Packet*, Handler*);

protected:
        Queue           *q_[MAX_QNUM];

        XCPQueue        *xcpq_; // same as q_[XCPQ]

        unsigned int    routerId_;
  
        int qToDq_;                 // current queue being dequed
        double wrrTemp_[MAX_QNUM];     // state of queue being serviced
        double queueWeight_[MAX_QNUM]; // queue weight for each queue (dynamic)

        int spread_bytes_;
        bool tcp_xcp_on_;           // true if XCP/TCP sharing is enables
        
        // Modified functions
        virtual void enque(Packet* pkt); // high level enque function
        virtual Packet* deque();         // high level deque function
    
        void addQueueWeights(int queueNum, int weight);
        int queueToDeque();              // returns qToDq
        int queueToEnque(int codePt);    // returns queue based on codept
        void mark(Packet *p);             // marks pkt based on flow type
        int getCodePt(Packet *p);        // returns codept in pkt hdr
        void setVirtualQueues();         // setup virtual queues(for xcp/tcp)
};

#endif //NS_XCP