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/* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
* Copyright (C) 1997 by the University of Southern California
* $Id: classifier-mpath.cc,v 1.10 2005/08/25 18:58:01 johnh Exp $
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
*
* The copyright of this module includes the following
* linking-with-specific-other-licenses addition:
*
* In addition, as a special exception, the copyright holders of
* this module give you permission to combine (via static or
* dynamic linking) this module with free software programs or
* libraries that are released under the GNU LGPL and with code
* included in the standard release of ns-2 under the Apache 2.0
* license or under otherwise-compatible licenses with advertising
* requirements (or modified versions of such code, with unchanged
* license). You may copy and distribute such a system following the
* terms of the GNU GPL for this module and the licenses of the
* other code concerned, provided that you include the source code of
* that other code when and as the GNU GPL requires distribution of
* source code.
*
* Note that people who make modified versions of this module
* are not obligated to grant this special exception for their
* modified versions; it is their choice whether to do so. The GNU
* General Public License gives permission to release a modified
* version without this exception; this exception also makes it
* possible to release a modified version which carries forward this
* exception.
*
*/
#ifndef lint
static const char rcsid[] =
"@(#) $Header: /cvsroot/nsnam/ns-2/classifier/classifier-mpath.cc,v 1.10 2005/08/25 18:58:01 johnh Exp $ (USC/ISI)";
#endif
#include "classifier.h"
class MultiPathForwarder : public Classifier {
public:
MultiPathForwarder() : ns_(0) {}
virtual int classify(Packet*) {
int cl;
int fail = ns_;
do {
cl = ns_++;
ns_ %= (maxslot_ + 1);
} while (slot_[cl] == 0 && ns_ != fail);
return cl;
}
private:
int ns_;
};
static class MultiPathClass : public TclClass {
public:
MultiPathClass() : TclClass("Classifier/MultiPath") {}
TclObject* create(int, const char*const*) {
return (new MultiPathForwarder());
}
} class_multipath;
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