aodv_rtable.h
上传用户:rrhhcc
上传日期:2015-12-11
资源大小:54129k
文件大小:5k
- /*
- Copyright (c) 1997, 1998 Carnegie Mellon University. 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. The name of the author may not be used to endorse or promote products
- derived from this software without specific prior written permission.
- THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
- 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
- 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
- /*
- * 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__ */