/Users/yzchen/ns/ns-allinone-2.33/ns-2.33/um-olsr-0.8.8/cdswl.h

/*
 * cdswl.h
 *
 *  Created on: Jul 26, 2009
 *      Author: yzchen
 */

#ifndef CDSWL_H_
#define CDSWL_H_

#include <packet.h>

/********** Message types **********/
#define CDSWL_HELLO_MSG         1

#define CDSWL_NVEX_MSG          2

#define CDSWL_INITDECL_MSG      3

#define CDSWL_RESGDECL_MSG      4

#define CDSWL_DOMDECL_MSG       5

/********* Other constants *********/
#define CDSWL_MAX_NBRS          64

#define HDR_CDSWL_PKT(p) hdr_cdswl_pkt::access(p)

struct hdr_cdswl_pkt {
        /* member variables */
        u_int8_t  pkt_type_;    // otc 0:       type
        u_int8_t  pkt_subtype_; // otc 1:       subtype
        u_int16_t pkt_length_;  // otc 2~3:     total packet length in bytes
        nsaddr_t  pkt_src_;             // otc 5~8:     sender IP address (v4)
//      nsaddr_t  pkt_body_[CDSWL_MAX_NBRS];    // maximum number of neighbors in a list
        nsaddr_t  *pkt_body_;

        /* accessors */
        inline u_int8_t&        pkt_type()              { return pkt_type_; }
        inline u_int8_t&        pkt_subtype()   { return pkt_subtype_ ; }
        inline u_int16_t&       pkt_length()    { return pkt_length_; }
        inline nsaddr_t&        pkt_src()               { return pkt_src_; }
//      inline nsaddr_t*        pkt_body()              { return pkt_body_; }

        /* ns-2 utilities */
        static int offset_;
        // Q: where is offset_ initlialized?
        // A: in "TCL Hooks" of OLSR.cc
        inline static int& offset() { return offset_; }
        inline static hdr_cdswl_pkt* access(const Packet* p) {
                return (hdr_cdswl_pkt*) p->access(offset_);
        }
};


#endif /* CDSWL_H_ */