classifier-addr-mpls.h
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- // -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*-
- /*
- * classifier-addr-mpls.h
- * Copyright (C) 2000 by the University of Southern California
- * $Id: classifier-addr-mpls.h,v 1.5 2005/08/25 18:58:09 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.
- *
- */
- //
- // Other copyrights might apply to parts of this software and are so
- // noted when applicable.
- //
- // Original source contributed by Gaeil Ahn. See below.
- //
- // $Header: /cvsroot/nsnam/ns-2/mpls/classifier-addr-mpls.h,v 1.5 2005/08/25 18:58:09 johnh Exp $
- /**************************************************************************
- * Copyright (c) 2000 by Gaeil Ahn *
- * Everyone is permitted to copy and distribute this software. *
- * Please send mail to fog1@ce.cnu.ac.kr when you modify or distribute *
- * this sources. *
- **************************************************************************/
- /***********************************************************
- * *
- * File: Header File for packet switching in MPLS node *
- * Author: Gaeil Ahn (fog1@ce.cnu.ac.kr), Dec. 1999 *
- * *
- ***********************************************************/
- #ifndef ns_classifier_addr_mpls_h
- #define ns_classifier_addr_mpls_h
- #include "address.h"
- #include "classifier-addr.h"
- #include "tclcl.h"
- const int MPLS_MaxPFTEntryNB = 100;
- const int MPLS_MaxLIBEntryNB = 100;
- const int MPLS_MaxERBEntryNB = 100;
- const int MPLS_MINIMUM_LSPID = 1000;
- const int MPLS_DEFAULT_PHB = -1;
- const int MPLS_DONTCARE = -77;
- const int MPLS_GOTO_L3 = -99;
- /* option for reroute scheme */
- const int MPLS_DROPPACKET = 0;
- const int MPLS_L3FORWARDING = 1;
- const int MPLS_MAKENEWLSP = 2;
- struct hdr_mpls {
- int label_;
- int bflag_;
- int ttl_;
- hdr_mpls* nexthdr_;
- hdr_mpls* top_;
-
- int& label() { return label_; }
- int& bflag() { return bflag_; }
- int& ttl() { return ttl_; }
- // Header access methods
- static int offset_; // required by PacketHeaderManager
- inline static int& offset() { return offset_; }
- inline static hdr_mpls* access(const Packet* p) {
- return (hdr_mpls*)p->access(offset_);
- }
- };
- struct PFTEntry {
- int FEC_;
- int PHB_;
- int LIBptr_;
- int aPATHptr_; // altanative path
- };
- struct PFT {
- PFTEntry Entry_[MPLS_MaxPFTEntryNB];
- int NB_;
- };
- struct ERBEntry {
- int LSPid_;
- int FEC_;
- int LIBptr_;
- };
- struct ERB {
- ERBEntry Entry_[MPLS_MaxERBEntryNB];
- int NB_;
- };
- struct LIBEntry {
- int iIface_;
- int iLabel_;
- int oIface_;
- int oLabel_;
- int LIBptr_; // for push operation
- };
- struct LIB {
- LIBEntry Entry_[MPLS_MaxLIBEntryNB];
- int NB_;
- };
- struct PktInfo
- {
- ns_addr_t dst_;
- int srcnode_;
- int phb_;
- hdr_mpls* shimhdr_; // altanative path
- };
- class MPLSAddressClassifier : public AddressClassifier {
- public:
- MPLSAddressClassifier();
- virtual int command(int argc, const char*const* argv);
- // Static configuration variables. Exposed to OTcl via methods in
- // MPLSNodeClass (see mpls-node.cc)
- static int ordered_control_;
- static int on_demand_;
-
- protected:
- virtual void install(int slot, NsObject *target);
-
- virtual int classify(Packet* p);
- int MPLSclassify(Packet* p);
-
- int processIP();
- int processLabelP();
-
- int convertL2toL2(int iLabel, int oIface, int oLabel, int LIBptr);
- int convertL3toL2(int oIface, int oLabel, int LIBptr);
-
- void GetIPInfo(Packet* p, ns_addr_t& dstaddr, int& phb, int& srcnode);
- hdr_mpls* checkTTL(hdr_mpls* shimhdr);
-
- hdr_mpls* GetShimHeader(Packet* p);
- hdr_mpls* DelAllShimHeader(hdr_mpls* shimhdr);
- hdr_mpls* push(hdr_mpls* shimhdr, int oLabel);
- hdr_mpls* pop(hdr_mpls* shimhdr);
- void swap(hdr_mpls* shimhdr, int oLabel) {
- shimhdr->label_ = oLabel;
- }
-
- void PFTinsert(int FEC, int PHB, int LIBptr);
- void PFTdelete(int entrynb);
- void PFTdeleteLIBptr(int LIBptr);
- void PFTupdate(int entrynb, int LIBptr);
- int PFTlocate(int FEC, int PHB, int &LIBptr);
- int PFTlookup(int FEC, int PHB, int &oIface,
- int &oLabel, int &LIBptr);
- void ERBinsert(int LSPid, int FEC, int LIBptr);
- void ERBdelete(int entrynb);
- void ERBupdate(int entrynb, int LIBptr);
- int ERBlocate(int LSPid, int FEC, int &LIBptr);
-
- int LIBinsert(int iIface, int iLabel, int oIface, int oLabel);
- int LIBisdeleted(int entrynb);
- void LIBupdate(int entrynb, int iIface, int iLabel,
- int oIface, int oLabel);
- int LIBlookup(int entrynb, int& oIface, int& oLabel, int& LIBptr);
- int LIBlookup(int iIface, int iLabel,
- int& oIface, int& oLabel, int& LIBptr);
- int LIBgetIncoming(int entrynb, int& iIface, int& iLabel);
-
- int ErLspBinding(int FEC,int PHB, int erFEC, int LSPid);
- int ErLspStacking(int erFEC0, int erLSPid0, int erFEC, int erLSPid);
- int FlowAggregation(int fineFEC, int finePHB, int coarseFEC,
- int coarsePHB);
- int aPathBinding(int FEC, int PHB, int erFEC,int LSPid);
- int aPathLookup(int FEC, int PHB,
- int& oIface, int& oLabel, int& LIBptr);
- int is_link_down(int node);
- int do_reroute(Packet* p);
-
- void PFTdump(const char* id);
- void ERBdump(const char* id);
- void LIBdump(const char* id);
- void trace(char* ptype, int psize, int ilabel, char *op,
- int oiface, int olabel, int ttl);
-
- // Hash mapping between neighbors and LDP agents
- virtual void delay_bind_init_all();
- virtual int delay_bind_dispatch(const char*, const char*, TclObject*);
- int size_;
- int ttl_;
- int label_;
- int enable_reroute_;
- int reroute_option_;
-
- int trace_mpls_;
- private:
- // Some states
- int data_driven_;
- int control_driven_;
- LIB LIB_;
- PFT PFT_;
- ERB ERB_;
- PktInfo PI_;
- };
- #endif