classifier-nix.cc
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- /* -*- Mode:C++; c-basic-offset:2; tab-width:2; indent-tabs-mode:f -*- */
- /*
- * classifier-nix.cc
- * Copyright (C) 2000 by the University of Southern California
- * $Id: classifier-nix.cc,v 1.7 2006/02/21 15:20:19 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.
- *
- */
- /*
- * NixVector classifier for stateless routing
- * contributed to ns from
- * George F. Riley, Georgia Tech, Spring 2000
- *
- */
- #include "config.h"
- #ifdef HAVE_STL
- #include <stdio.h>
- #include "ip.h"
- #include "nixvec.h"
- #include "classifier-nix.h"
- #include "hdr_nv.h"
- /* Define the TCL Class */
- static class NixClassifierClass : public TclClass {
- public:
- NixClassifierClass() : TclClass("Classifier/Nix") {}
- TclObject* create(int, const char*const*) {
- return (new NixClassifier());
- }
- } class_nix_classifier;
- /****************** NixClassifier Methods ************/
- NsObject* NixClassifier::find(Packet* p)
- {
- if (m_NodeId == NODE_NONE)
- {
- printf("NixClassifier::find(), Unknown node idn");
- return(NULL);
- }
- NixNode* pN = NixNode::GetNodeObject(m_NodeId);
- hdr_ip* ip = hdr_ip::access(p);
- if ((nodeid_t)ip->daddr() == pN->Id())
- { // Arrived at destination, pass on to the dmux object
- // if(0)printf("Returning Dmux objet %pn", m_Dmux);
- return m_Dmux;
- }
- hdr_nv* nv = hdr_nv::access(p);
- NixVec* pNv = nv->nv();
- if (pNv == NULL)
- {
- printf("Error! NixClassifier %s called with no NixVectorn", name());
- return(NULL);
- }
- if (pN == NULL)
- {
- printf("NixClassifier::find(), can't find node id %ldn", m_NodeId);
- return(NULL);
- }
- Nix_t Nix = pNv->Extract(pN->GetNixl(), nv->used()); // Get the next nix
- nodeid_t n = pN->GetNeighbor(Nix,pNv); // this is just for debug print
- NsObject* nsobj = pN->GetNsNeighbor(Nix);
- if(0)printf("Classifier %s, Node %ld next hop %ld (%s)n",
- name(), pN->Id(), n, nsobj->name());
- return(nsobj); // And return the nexthop head object
- }
- int NixClassifier::command(int argc, const char*const* argv)
- {
- if (argc == 3 && strcmp(argv[1],"set-node-id") == 0)
- {
- m_NodeId = atoi(argv[2]);
- return(TCL_OK);
- }
- if (argc == 4 && strcmp(argv[1],"install") == 0)
- {
- int target = atoi(argv[2]);
- NixNode* pN = NixNode::GetNodeObject(m_NodeId);
- if (pN)
- {
- if(0)printf("%s NixClassifier::Command node %ld install %s %sn",
- name(), pN->Id(), argv[2], argv[3]);
- if ((nodeid_t)target == pN->Id())
- { // This is the only case we care about, need to note the dmux obj
- m_Dmux = (NsObject*)TclObject::lookup(argv[3]);
- //if(0)printf("m_Dmux obj is %pn", m_Dmux);
- }
- }
- return(TCL_OK);
- }
- return (Classifier::command(argc, argv));
- }
-
- #endif // HAVE_STL