00001 /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */ 00002 /* 00003 * Copyright (c) 1996-1997 Regents of the University of California. 00004 * All rights reserved. 00005 * 00006 * Redistribution and use in source and binary forms, with or without 00007 * modification, are permitted provided that the following conditions 00008 * are met: 00009 * 1. Redistributions of source code must retain the above copyright 00010 * notice, this list of conditions and the following disclaimer. 00011 * 2. Redistributions in binary form must reproduce the above copyright 00012 * notice, this list of conditions and the following disclaimer in the 00013 * documentation and/or other materials provided with the distribution. 00014 * 3. All advertising materials mentioning features or use of this software 00015 * must display the following acknowledgement: 00016 * This product includes software developed by the MASH Research 00017 * Group at the University of California Berkeley. 00018 * 4. Neither the name of the University nor of the Research Group may be 00019 * used to endorse or promote products derived from this software without 00020 * specific prior written permission. 00021 * 00022 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 00023 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00024 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00025 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 00026 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00027 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00028 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00029 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00030 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00031 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00032 * SUCH DAMAGE. 00033 * 00034 * @(#) $Header: /cvsroot/nsnam/ns-2/classifier/classifier.h,v 1.33 2005/09/26 09:12:46 lacage Exp $ (LBL) 00035 */ 00036 00037 #ifndef ns_classifier_h 00038 #define ns_classifier_h 00039 00040 #include "object.h" 00041 00042 class Packet; 00043 00044 class Classifier : public NsObject { 00045 public: 00046 Classifier(); 00047 virtual ~Classifier(); 00048 00049 inline int maxslot() const { return maxslot_; } 00050 inline NsObject* slot(int slot) { 00051 if ((slot >= 0) && (slot < nslot_)) 00052 return slot_[slot]; 00053 return 0; 00054 } 00055 inline int mshift(int val) { return ((val >> shift_) & mask_); } 00056 inline void set_default_target(NsObject *obj) { 00057 default_target_ = obj; 00058 } 00059 00060 virtual void recv(Packet* p, Handler* h); 00061 virtual NsObject* find(Packet*); 00062 virtual int classify(Packet *); 00063 virtual void clear(int slot); 00064 enum classify_ret {ONCE= -2, TWICE= -1}; 00065 00066 virtual void do_install(char* dst, NsObject *target) { 00067 int slot = atoi(dst); 00068 install(slot, target); } 00069 int install_next(NsObject *node); 00070 virtual void install(int slot, NsObject*); 00071 00072 // function to set the rtg table size 00073 void set_table_size(int nn); 00074 // hierarchical specific 00075 virtual void set_table_size(int level, int nn) {} 00076 00077 int allocPort (NsObject *); 00078 protected: 00079 virtual int getnxt(NsObject *); 00080 virtual int command(int argc, const char*const* argv); 00081 void alloc(int); 00082 NsObject** slot_; /* table that maps slot number to a NsObject */ 00083 int nslot_; 00084 int maxslot_; 00085 int offset_; // offset for Packet::access() 00086 int shift_; 00087 int mask_; 00088 NsObject *default_target_; 00089 int nsize_; //what size of nslot_ should be 00090 }; 00091 00092 #endif
1.7.1