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/* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
* Copyright (c) 1996-1997 Regents of the University of California.
* 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 REGENTS 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 REGENTS 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.
*
* @(#) $Header: /cvsroot/nsnam/ns-2/classifier/classifier.h,v 1.34 2010/03/08 05:54:49 tom_henderson Exp $ (LBL)
*/
#ifndef ns_classifier_h
#define ns_classifier_h
#include "object.h"
class Packet;
class Classifier : public NsObject {
public:
Classifier();
virtual ~Classifier();
inline int maxslot() const { return maxslot_; }
inline NsObject* slot(int slot) {
if ((slot >= 0) && (slot < nslot_))
return slot_[slot];
return 0;
}
inline int mshift(int val) { return ((val >> shift_) & mask_); }
inline void set_default_target(NsObject *obj) {
default_target_ = obj;
}
virtual void recv(Packet* p, Handler* h);
virtual NsObject* find(Packet*);
virtual int classify(Packet *);
virtual void clear(int slot);
enum classify_ret {ONCE= -2, TWICE= -1};
virtual void do_install(char* dst, NsObject *target) {
int slot = atoi(dst);
install(slot, target); }
int install_next(NsObject *node);
virtual void install(int slot, NsObject*);
// function to set the rtg table size
void set_table_size(int nn);
// hierarchical specific
virtual void set_table_size(int level, int nn);
int allocPort (NsObject *);
protected:
virtual int getnxt(NsObject *);
virtual int command(int argc, const char*const* argv);
void alloc(int);
NsObject** slot_; /* table that maps slot number to a NsObject */
int nslot_;
int maxslot_;
int offset_; // offset for Packet::access()
int shift_;
int mask_;
NsObject *default_target_;
int nsize_; //what size of nslot_ should be
};
#endif
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