/* -*-	Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- *//* By Sandeep Kumar, Kopparapu Suman and Richa Jain, * Indian Institute of Technology, Bombay. * June, 2001.*/ /* Copyright (c) 2001 Indian Insitute of Technology, Bombay.   * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: *  * 1. Redistributions of source code and binary code must contain * the above copyright notice, this list of conditions and the following  * disclaimer. *  * 2. All advertising materials mentioning features or use of this software * must display the following acknowledgement:  * This product includes software developed at Indian Insitute of * Technology, Bombay.  * * 3. The name of the Institute may not be used to endorse or promote  * products derived from this software without specific prior written  * permission. * INDIAN INSTITUTE OF TECHNOLOGY, BOMBAY, MAKES NO REPRESENTATIONS  * CONCERNING EITHER THE MERCHANTABILITY OF THIS SOFTWARE OR THE  * SUITABILITY OF THIS SOFTWARE FOR ANY PARTICULAR PURPOSE.  The software  * is provided "as is" without express or implied warranty of any kind.*/#ifndef ns_rlc_h#define ns_rlc_h#include <delay.h>#include <queue.h>#include <arp.h>#include <classifier.h>#include <lanRouter.h>#include <varp.h>#include <rlc-timers.h>//#include	<rlc-timers.h> enum RLCFrameType {	RLC_DATA		= 0x0001,	RLC_ACK		= 0x0010,	RLC_NACK		= 0x0000,};struct hdr_rlc {	RLCFrameType rlctype_;		// link-layer frame type	int seqno_;			// sequence number	int ackno_;			// acknowledgement number	int bopno_;			// begin of packet seqno	int eopno_;			// end of packet seqno	int psize_;			// size of packet	double sendtime_;		// time the packet is sent	static int offset_;	inline int& offset() { return offset_; }	static hdr_rlc* access(const Packet* p) {		return (hdr_rlc*) p->access(offset_);	}	inline RLCFrameType& rlctype() { return rlctype_; }	inline int& seqno() { return seqno_; }	inline int& ackno() { return ackno_; }	inline int& bopno() { return bopno_; }	inline int& eopno() { return eopno_; }	inline int& psize() { return psize_; }	inline double& sendtime() { return sendtime_; }};class RLC : public LinkDelay {	friend class rlcTxTimer;	friend class rlcackTimer;public://	friend void ARPTable::arpinput(Packet *p, LL* ll);//	friend void ARPTable::arprequest(nsaddr_t src, nsaddr_t dst, LL* ll);	RLC();	virtual void recv(Packet* p, Handler* h);	void handle(Event* e) { recv((Packet*)e, 0); }	inline int initialized() {		return (mac_ && uptarget_ && downtarget_);	}//sandy's new funcs	virtual void recvACK(Packet* p);	virtual void recvDATA(Packet* p);	virtual void sendUpDATA(Packet* p);	virtual void enqueDATA(Packet* p);	virtual void sendDownDATA(void);	virtual void sendACK(Packet* p);//	virtual void sendUp(Packet* p);//	virtual void sendDown(Packet* p);	virtual void sendHandler(void);	virtual void send_timer(void);	virtual void sendackHandler(void);	virtual void send_acktimer(void);	virtual void RetransmitDATA(void);	virtual void RetransmitACK(void);	virtual void sendDownDATAonACK(void);	inline int seqno() { return seqno_; }	inline int ackno() { return ackno_; }	inline int macDA() { return macDA_; }        inline Queue *ifq() { return ifq_; }        inline NsObject* downtarget() { return downtarget_; }        inline NsObject* uptarget() { return uptarget_; } 	inline ARPTable *arp_table() { return arptable_; }	protected:	int command(int argc, const char*const* argv);  	static int rlcverbose_; //rj  		int seqno_;			// link-layer sequence number	int ackno_;			// ACK received so far	int rackno_;			// seq no of left most pkt	int macDA_;			// destination MAC address	int window_;			//sandy window size for sack	        Queue* ifq_;			// interface queue	   PacketQueue* buf_;		//sandy's queue	   PacketQueue* Txbuf_;		//sandy's Tx buffer	   PacketQueue* Rxbuf_;		//sandy's Rx buffer	Mac*   mac_;		        // MAC object        LanRouter* lanrouter_;          // for lookups of the next hop	ARPTable*  arptable_;           // ARP table object	VARPTable* varp_;               // Virtual ARP object		NsObject* downtarget_;		// for outgoing packet 	NsObject* uptarget_;		// for incoming packet        	int acked_;			//sandy	int rlcfraged_;	int rlcfragsz_;	int datacounter;	int ackcounter;	Packet *pktTx_;	Packet *pktRx_;	int inseq_;			//sandy	int unackseqno_;		//sandy	int numdups;	 		//sandyprivate:	rlcTxTimer	lhSend_;	rlcackTimer acSend_;};#endif