satroute.h
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- /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
- /*
- * Copyright (c) 1999 Regents of the University of California.
- * 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the MASH Research
- * Group at the University of California Berkeley.
- * 4. Neither the name of the University nor of the Research Group may be
- * used to endorse or promote products derived from this software without
- * specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
- *
- * @(#) $Header: /cvsroot/nsnam/ns-2/satellite/satroute.h,v 1.4 2005/05/19 03:19:02 tomh Exp $
- *
- * Contributed by Tom Henderson, UCB Daedalus Research Group, June 1999
- */
- #ifndef ns_satroute_h_
- #define ns_satroute_h_
- #include <agent.h>
- #include "route.h"
- #include "node.h"
- #define ROUTER_PORT 0xff
- #define SAT_ROUTE_INFINITY 0x3fff
- // Entry in the forwarding table
- struct slot_entry {
- int next_hop;
- NsObject* entry;
- };
- class SatNode;
- //
- // Currently, this only implements centralized routing. However, by
- // following the examples in the mobility code, one could build on this
- // agent to make it a distributed routing agent
- //
- class SatRouteAgent : public Agent {
- public:
- SatRouteAgent();
- ~SatRouteAgent();
- int command(int argc, const char * const * argv);
- // centralized routing
- void clear_slots();
- void install(int dst, int next_hop, NsObject* p);
- SatNode* node() { return node_; }
- int myaddr() {return myaddr_; }
-
- protected:
- virtual void recv(Packet *, Handler *);
- void forwardPacket(Packet*);
- int myaddr_; // My address-- set from OTcl
- // centralized routing stuff
- int maxslot_;
- int nslot_;
- slot_entry* slot_; // Node's forwarding table
- void alloc(int); // Helper function
- SatNode* node_;
-
- };
- ////////////////////////////////////////////////////////////////////////////
- // A global route computation object/genie
- // This class performs operations very similar to what "Simulator instproc
- // compute-routes" does at OTcl-level, except it performs them entirely
- // in C++. Single source shortest path routing is also supported.
- class SatRouteObject : public RouteLogic {
- public:
- SatRouteObject();
- static SatRouteObject& instance() {
- return (*instance_); // general access to route object
- }
- void recompute();
- void recompute_node(int node);
- int command(int argc, const char * const * argv);
- int data_driven_computation() { return data_driven_computation_; }
- void insert_link(int src, int dst, double cost);
- void insert_link(int src, int dst, double cost, void* entry);
- int wiredRouting() { return wiredRouting_;}
- //void hier_insert_link(int *src, int *dst, int cost); // support hier-rtg?
- protected:
- void compute_topology();
- void populate_routing_tables(int node = -1);
- int lookup(int src, int dst);
- void* lookup_entry(int src, int dst);
- void node_compute_routes(int node);
- void dump(); // for debugging only
- static SatRouteObject* instance_;
- int metric_delay_;
- int suppress_initial_computation_;
- int data_driven_computation_;
- int wiredRouting_;
- };
- #endif