umts-ip-interface.cc

/*
 * Copyright (c) 2007 Regents of the SIGNET lab, University of Padova.
 * 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. Neither the name of the University of Padova (SIGNET lab) nor the 
 *    names of its contributors may be used to endorse or promote products 
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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 "umts-ip-interface.h"
#include"umts-headers.h"
#include<ip.h>
#include <algorithm>    

static class UmtsIPInterfaceModuleClass : public TclClass {
public:
  UmtsIPInterfaceModuleClass() : TclClass("Module/IP/Interface/UMTS") {}
  TclObject* create(int, const char*const*) {
    return (new UmtsIPInterfaceModule);

  }
} class_Umtsipinterface_module;



UmtsIPInterfaceModule::UmtsIPInterfaceModule()
{
  
}

UmtsIPInterfaceModule::~UmtsIPInterfaceModule()
{

}


int UmtsIPInterfaceModule::command(int argc, const char*const* argv)
{
  Tcl& tcl = Tcl::instance();
  if(argc == 2)
    {
      if (strcasecmp(argv[1],"getCodeId")==0)
        {
          tcl.resultf("%d", getCode(ipAddr_));
          return TCL_OK;
        }
    }
  else if (argc == 3) 
    {
      if (strcasecmp(argv[1],"setCodeId")==0)
        {
          addIpCode(ipAddr_, atoi(argv[2]));
          return TCL_OK;
        }
    }

  return IPInterfaceModule::command(argc, argv);
}


void UmtsIPInterfaceModule::recv(Packet *p)
{
  hdr_ip *iph = HDR_IP(p);
  hdr_cmn *ch = HDR_CMN(p);
  hdr_umtsphy * uh = HDR_UMTSPHY(p);

  if(ch->direction() == hdr_cmn::DOWN)
    {
      // next hop should be an UMTS node
      // This is the Right Thing if we're at the BS
      // If we're at the ME, this field will be overwritten
      // so in current implementation no harm will be done.
      // I admit this is weird :-/
      uh->me_code_id = getCode(ch->next_hop_);
    }
  IPInterfaceModule::recv(p);
}


int UmtsIPInterfaceModule::getCode(nsaddr_t ipaddr)
{
  IpCodeList::iterator res;
  IpCode ic(ipaddr);
  res = find(ipclist.begin(), ipclist.end(), ic);
  
  if (res == ipclist.end())
    return -1;
  else 
    return res->code;
}


void UmtsIPInterfaceModule::addIpCode(nsaddr_t ipaddr, int code)
{
  // This implementation does not keep the list sorted...
  IpCode ic(ipaddr, code);
  ipclist.push_front(ic); 
  
}


// nsaddr_t  UmtsIPInterfaceModule::ipAddrCounter = UMTS_START_IP_ADDRESS;
// nsaddr_t  UmtsIPInterfaceModule::ipSubNet      = UMTS_SUBNET_MASK;

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