scoreboard-rq.h
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- /*
- * Copyright (c) 2002 Tom Kelly, University of Cambridge
- * 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 must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the MASH Research
- * Group at the University of California Berkeley.
- * 4. Neither the name of the University nor of the Research Group may be
- * used to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- */
- #ifndef ns_scoreboard_rq_h
- #define ns_scoreboard_rq_h
- // Definition of the scoreboardRQ class
- // - a shim over the FullTCP reassembly queue code
- #include "scoreboard.h"
- #include "rq.h"
- class ScoreBoardRQ : public ScoreBoard {
- public:
- ScoreBoardRQ(): ScoreBoard(NULL, 0), h_seqno_(-1),sack_min(-1), rq_(sack_min){};
- virtual ~ScoreBoardRQ(){delete[] SBN;}
- virtual int IsEmpty ();
- virtual void ClearScoreBoard () {rq_.clear(); h_seqno_ = -1;};
- virtual int GetNextRetran ();
- virtual void MarkRetran (int retran_seqno){
- if (retran_seqno >= h_seqno_)
- h_seqno_ = retran_seqno+1;
- };
- virtual void MarkRetran (int retran_seqno, int snd_nxt){
- if (retran_seqno >= h_seqno_)
- h_seqno_ = retran_seqno+1;
- };
- virtual int UpdateScoreBoard (int last_ack_, hdr_tcp*);
- virtual int CheckUpdate() {return (changed_);}
- virtual int CheckSndNxt (hdr_tcp*);
- virtual int GetNextUnacked (int seqno);
- virtual void Dump();
- protected:
- int h_seqno_;
- int sack_min; // highest cumulative ack seen so far, plus one
-
- ReassemblyQueue rq_;
- };
- #endif