classifier.h
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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 1.33 2005/09/26 09:12:46 lacage 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