tpm.cc
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- /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
- //
- /*
- * tpm.cc
- * Copyright (C) 2001 by the University of Southern California
- * $Id: tpm.cc,v 1.3 2006/02/21 15:20:18 mahrenho 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.
- *
- */
- //
- // Other copyrights might apply to parts of this software and are so
- // noted when applicable.
- //
- // Management function to playback TCPDump trace file (after post precssing)
- // Xuan Chen (xuanc@isi.edu)
- //
- #include "tpm.h"
- // Timer to send requests
- TPMTimer::TPMTimer(TPM* t) {
- tpm = t;
- }
- void TPMTimer::expire(Event *e) {
- //if (e)
- // Packet::free((Packet *)e);
- tpm->run();
- }
- static class TPMClass : public TclClass {
- public:
- TPMClass() : TclClass("TPM") {}
- TclObject* create(int, const char*const*) {
- return (new TPM());
- }
- } class_tpm;
- TPM::TPM() {
- tp_default_ = tp_num_ = 0;
- tp = NULL;
-
- // initialize next request
- next_p.time = 0;
- next_p.saddr = 0;
- next_p.sport = 0;
- next_p.daddr = 0;
- next_p.dport = 0;
- next_p.len = 0;
- // initialize request timer
- timer = new TPMTimer(this);
- start_t = 0;
- }
- TPM::~TPM() {
- if (fp)
- fclose(fp);
- if (timer)
- delete timer;
- }
- int TPM::loadLog(const char* filename) {
- fp = fopen(filename, "r");
- if (fp == 0)
- return(0);
-
- return(1);
- }
- int TPM::start() {
- start_t = Scheduler::instance().clock();
- processLog();
- return(1);
- }
- int TPM::processLog() {
- int time, sport, dport, len;
- unsigned int saddr, daddr;
- while (!feof(fp)) {
- fscanf(fp, "%d %u %d %u %d %dn",
- &time, &saddr, &sport, &daddr, &dport, &len);
- if (time > 0) {
- // save information for next request
- next_p.time = time;
- next_p.saddr = saddr;
- next_p.sport = sport;
- next_p.daddr = daddr;
- next_p.dport = dport;
- next_p.len = len;
-
- //double now = Scheduler::instance().clock();
- //double delay = time + start_t - now;
- double delay = time * 1.0 / 1000000.0;
- timer->resched(delay);
-
- return(1);
- } else {
- genPkt(saddr, sport, daddr, dport, len);
- }
- }
- return(1);
- }
- int TPM::run() {
- genPkt(next_p.saddr, next_p.sport, next_p.daddr, next_p.dport, next_p.len);
- processLog();
- return(1);
- }
- int TPM::genPkt(unsigned int saddr, int sport, unsigned int daddr, int dport, int len) {
- // we can send packets to anybody with twinks...
- if (saddr == daddr) {
- return(0);
- }
- // use the default TP agent unless specified.
- unsigned int tp_id = tp_default_;
- if (saddr < (unsigned int)tp_num_) {
- tp_id = saddr;
- }
- printf("tpid %dn", tp_id);
- tp[tp_id]->sendto(len, saddr, sport, daddr, dport);
-
- return(1);
- }
- int TPM::command(int argc, const char*const* argv) {
- if (argc == 2) {
- if (strcmp(argv[1], "start") == 0) {
- if (start())
- return(TCL_OK);
- else
- return(TCL_ERROR);
-
- }
-
- } else if (argc == 3) {
- if (strcmp(argv[1], "loadLog") == 0) {
- if (loadLog(argv[2]))
- return(TCL_OK);
- else
- return(TCL_ERROR);
- } else if (strcmp(argv[1], "tp-num") == 0) {
- tp_num_ = atoi(argv[2]);
- tp_default_ = tp_num_ - 1;
- if (tp_default_ < 0)
- tp_default_ = 0;
- tp = new TPAgent*[tp_num_];
- return(TCL_OK);
- } else if (strcmp(argv[1], "tp-default") == 0) {
- tp_default_ = atoi(argv[2]);
- return(TCL_OK);
- }
- } else if (argc == 4) {
- if (strcmp(argv[1], "tp-reg") == 0) {
- int index = atoi(argv[2]);
- if (index >= tp_num_)
- return(TCL_ERROR);
- tp[index] = (TPAgent *) TclObject::lookup(argv[3]);
- return(TCL_OK);
- }
- }
- printf("Command specified does not existn");
- return(TCL_ERROR);
- }