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/* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
* Copyright (c) 1996 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 Computer Systems
* Engineering Group at Lawrence Berkeley Laboratory and the Daedalus
* research group at UC Berkeley.
* 4. Neither the name of the University nor of the Laboratory 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.
*/
#include "varp.h"
#include "mac.h"
#include "packet.h"
static class VARPTableClass : public TclClass {
public:
VARPTableClass() : TclClass("VARPTable") {}
TclObject* create(int, const char*const*) {
return (new VARPTable);
}
} class_VARPTable;
VARPTable::VARPTable(void) : TclObject(), maddr_(0), size_(0)
{}
VARPTable::~VARPTable(void)
{
delete [] maddr_;
}
void VARPTable::sizeinit(int n)
{
int *temp = maddr_;
int osize = size_;
int i;
if (size_ == 0)
size_ = 10;
while(!(n < size_))
size_ = 2*size_;
maddr_ = new int[size_];
for (i=0;i<osize;i++)
maddr_[i] = temp[i];
for (i=osize;i<size_;i++)
maddr_[i] = -1;
delete [] temp;
}
int VARPTable::command(int argc, const char*const* argv) {
if (argc == 4) {
if (strcmp(argv[1], "mac-addr") == 0) {
int n = atoi(argv[2]);
if(!(n < size_))
sizeinit(n);
maddr_[n] = atoi(argv[3]);
return (TCL_OK);
}
}
return TclObject::command(argc, argv);
}
int VARPTable::arpresolve(int IPaddr, Packet* p) {
if (IPaddr > size_)
return 1;
int ma = maddr_[IPaddr];
if (ma >= 0) {
HDR_MAC(p)->macDA_ = ma;
return 0;
}
return 1;
}
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