/*Copyright (c) 1997, 1998 Carnegie Mellon University.  All RightsReserved. Permission to use, copy, modify, and distribute thissoftware and its documentation is hereby granted (including forcommercial or for-profit use), provided that both the copyright notice and this permission notice appear in all copies of the software, derivative works, or modified versions, and any portions thereof, and that both notices appear in supporting documentation, and that credit is given to Carnegie Mellon University in all publications reporting on direct or indirect use of this code or its derivatives.ALL CODE, SOFTWARE, PROTOCOLS, AND ARCHITECTURES DEVELOPED BY THE CMUMONARCH PROJECT ARE EXPERIMENTAL AND ARE KNOWN TO HAVE BUGS, SOME OFWHICH MAY HAVE SERIOUS CONSEQUENCES. CARNEGIE MELLON PROVIDES THISSOFTWARE OR OTHER INTELLECTUAL PROPERTY IN ITS ``AS IS'' CONDITION,AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULARPURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITYBE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, ORCONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OFSUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; ORBUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCEOR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE ORINTELLECTUAL PROPERTY, EVEN IF ADVISED OF THE POSSIBILITY OF SUCHDAMAGE.Carnegie Mellon encourages (but does not require) users of thissoftware or intellectual property to return any improvements orextensions that they make, and to grant Carnegie Mellon the rights to redistribute these changes without encumbrance.The AODV code developed by the CMU/MONARCH group was optimized and tuned by Samir Das and Mahesh Marina, University of Cincinnati. The work was partially done in Sun Microsystems.*/#ifndef __aodv_rtable_h__#define __aodv_rtable_h__#include <assert.h>#include <sys/types.h>#include <config.h>#include <lib/bsd-list.h>#include <scheduler.h>#define CURRENT_TIME    Scheduler::instance().clock()#define INFINITY2        0xff/*   AODV Neighbor Cache Entry*/class AODV_Neighbor {        friend class AODV;        friend class aodv_rt_entry; public:        AODV_Neighbor(u_int32_t a) { nb_addr = a; } protected:        LIST_ENTRY(AODV_Neighbor) nb_link;        nsaddr_t        nb_addr;        double          nb_expire;      // ALLOWED_HELLO_LOSS * HELLO_INTERVAL};LIST_HEAD(aodv_ncache, AODV_Neighbor);/*   AODV Precursor list data structure*/class AODV_Precursor {        friend class AODV;        friend class aodv_rt_entry; public:        AODV_Precursor(u_int32_t a) { pc_addr = a; } protected:        LIST_ENTRY(AODV_Precursor) pc_link;        nsaddr_t        pc_addr;	// precursor address};LIST_HEAD(aodv_precursors, AODV_Precursor);/*  Route Table Entry*/class aodv_rt_entry {        friend class aodv_rtable;        friend class AODV;	friend class LocalRepairTimer; public:        aodv_rt_entry();        ~aodv_rt_entry();        void            nb_insert(nsaddr_t id);        AODV_Neighbor*  nb_lookup(nsaddr_t id);        void            pc_insert(nsaddr_t id);        AODV_Precursor* pc_lookup(nsaddr_t id);        void 		pc_delete(nsaddr_t id);        void 		pc_delete(void);        bool 		pc_empty(void);        double          rt_req_timeout;         // when I can send another req        /*** added for multicast ***/        u_int8_t        rt_req_times;         /****************************/        u_int8_t        rt_req_cnt;             // number of route requests	 protected:        LIST_ENTRY(aodv_rt_entry) rt_link;        nsaddr_t        rt_dst;        u_int32_t       rt_seqno;	/* u_int8_t 	rt_interface; */        u_int16_t       rt_hops;       		// hop count	int 		rt_last_hop_count;	// last valid hop count        nsaddr_t        rt_nexthop;    		// next hop IP address	/* list of precursors */         aodv_precursors rt_pclist;        double          rt_expire;     		// when entry expires        u_int8_t        rt_flags;#define RTF_DOWN 0#define RTF_UP 1#define RTF_IN_REPAIR 2/*** added for prediction in unicast ***/#define RTF_P_LINK 3#define RTF_PREDICTION 4        u_int8_t         rt_prevnode_warning;        u_int32_t        rt_retry_pid;        u_int8_t         rt_retry_times;/*****************************************/        /*         *  Must receive 4 errors within 3 seconds in order to mark         *  the route down.        u_int8_t        rt_errors;      // error count        double          rt_error_time;#define MAX_RT_ERROR            4       // errors#define MAX_RT_ERROR_TIME       3       // seconds         */#define MAX_HISTORY	3	double 		rt_disc_latency[MAX_HISTORY];	char 		hist_indx;        int 		rt_req_last_ttl;        // last ttl value used	// last few route discovery latencies	// double 		rt_length [MAX_HISTORY];	// last few route lengths        /*         * a list of neighbors that are using this route.         */        aodv_ncache          rt_nblist;};/*  The Routing Table*/class aodv_rtable { public:	aodv_rtable() { LIST_INIT(&rthead); }        aodv_rt_entry*       head() { return rthead.lh_first; }        aodv_rt_entry*       rt_add(nsaddr_t id);        void                 rt_delete(nsaddr_t id);        aodv_rt_entry*       rt_lookup(nsaddr_t id); private:        LIST_HEAD(aodv_rthead, aodv_rt_entry) rthead;};#endif /* _aodv__rtable_h__ */