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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.
*
* Contributed by Giao Nguyen, http://daedalus.cs.berkeley.edu/~gnguyen
*/
#ifndef lint
static const char rcsid[] =
"@(#) $Header: /cvsroot/nsnam/ns-2/classifier/classifier-mac.cc,v 1.15 1999/01/04 19:58:56 haldar Exp $ (UCB)";
#endif
#include "packet.h"
#include "mac.h"
#include "classifier.h"
class MacClassifier : public Classifier {
public:
MacClassifier() : bcast_(0) {
bind("bcast_", &bcast_);
}
void recv(Packet*, Handler*);
int bcast_;
};
static class MacClassifierClass : public TclClass {
public:
MacClassifierClass() : TclClass("Classifier/Mac") {}
TclObject* create(int, const char*const*) {
return (new MacClassifier());
}
} class_mac_classifier;
void MacClassifier::recv(Packet* p, Handler*)
{
Mac* mac;
hdr_mac* mh = HDR_MAC(p);
if (bcast_ || mh->macDA() == BCAST_ADDR || (mac = (Mac *)find(p)) == 0) {
// Replicate packets to all slots (broadcast)
int macSA = mh->macSA();
for (int i = 0; i < maxslot_; ++i) {
if ((mac = (Mac *)slot_[i]) && mac->addr() != macSA)
mac->recv(p->copy(), 0);
}
if (maxslot_ >= 0) {
mac= (Mac *)slot_[maxslot_];
if (mac->addr() != macSA) {
mac->recv(p, 0);
return;
}
}
Packet::free(p);
return;
}
mac->recv(p, 0);
}
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