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/* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
* Copyright (C) 1998 by the University of Southern California
* $Id: lanRouter.cc,v 1.10 2005/08/25 18:58:07 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: /usr/src/mash/repository/vint/ns-2/lanRouter.cc";
#endif
#include <tcl.h>
#include "lanRouter.h"
#include "address.h"
#include "ip.h"
static class LanRouterClass : public TclClass {
public:
LanRouterClass() : TclClass("LanRouter") {}
TclObject* create(int, const char*const*) {
return (new LanRouter());
}
} class_mac;
int LanRouter::next_hop(Packet *p) {
if (switch_ && switch_->classify(p)==1) {
return -1;
}
if (!routelogic_) return -1;
hdr_ip* iph= hdr_ip::access(p);
char* adst= Address::instance().print_nodeaddr(iph->daddr());
int next_hopIP;
if (enableHrouting_) {
char* bdst;
routelogic_->lookup_hier(lanaddr_, adst, next_hopIP);
// hacking: get rid of the last "."
bdst = Address::instance().print_nodeaddr(next_hopIP);
// bdst[strlen(bdst)-1] = '\0';
Tcl &tcl = Tcl::instance();
tcl.evalf("[Simulator instance] get-node-id-by-addr %s", bdst);
sscanf(tcl.result(), "%d", &next_hopIP);
delete [] bdst;
} else {
routelogic_->lookup_flat(lanaddr_, adst, next_hopIP);
}
delete [] adst;
return next_hopIP;
}
int LanRouter::command(int argc, const char*const* argv)
{
// Tcl& tcl = Tcl::instance();
if (argc == 3) {
// cmd lanaddr <addr>
if (strcmp(argv[1], "lanaddr") == 0) {
strcpy(lanaddr_, argv[2]);
return (TCL_OK);
}
// cmd routing hier|flat
if (strcmp(argv[1], "routing") == 0) {
if (strcmp(argv[2], "hier")==0)
enableHrouting_= true;
else if (strcmp(argv[2], "flat")==0)
enableHrouting_= false;
else return (TCL_ERROR);
return (TCL_OK);
}
// cmd switch <switch>
if (strcmp(argv[1], "switch") == 0) {
switch_ = (Classifier*) TclObject::lookup(argv[2]);
return (TCL_OK);
}
// cmd routelogic <routelogic>
if (strcmp(argv[1], "routelogic") == 0) {
routelogic_ = (RouteLogic*) TclObject::lookup(argv[2]);
return (TCL_OK);
}
}
return NsObject::command(argc, argv);
}
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