header.hh
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- //
- // header.hh : Diffusion Datagram Header
- // authors : Chalermek Intanagonwiwat and Fabio Silva
- //
- // Copyright (C) 2000-2002 by the University of Southern California
- // $Id: header.hh,v 1.8 2006/02/21 15:20:18 mahrenho 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.
- //
- // Linking this file statically or dynamically with other modules is making
- // a combined work based on this file. Thus, the terms and conditions of
- // the GNU General Public License cover the whole combination.
- //
- // In addition, as a special exception, the copyright holders of this file
- // give you permission to combine this file 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
- // file 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 file 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.
- #ifndef _HEADER_HH_
- #define _HEADER_HH_
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif // HAVE_CONFIG_H
- #include "nr/nr.hh"
- typedef int *DiffPacket;
- #define MAX_PKT_SIZE 8192
- #define BROADCAST_ADDR -1
- #define LOCALHOST_ADDR -2
- #define DIFFUSION_VERSION 3
- #ifdef NS_DIFFUSION
- #define DEFAULT_DIFFUSION_PORT 255
- #else
- #define DEFAULT_DIFFUSION_PORT 2000
- #endif // NS_DIFFUSION
- #define DIFFUSION_PORT DEFAULT_DIFFUSION_PORT
- // For accessing fields in the diffusion header
- #define LAST_HOP(x) (x)->last_hop
- #define NEXT_HOP(x) (x)->next_hop
- #define DIFF_VER(x) (x)->version
- #define MSG_TYPE(x) (x)->msg_type
- #define DATA_LEN(x) (x)->data_len
- #define PKT_NUM(x) (x)->pkt_num
- #define RDM_ID(x) (x)->rdm_id
- #define NUM_ATTR(x) (x)->num_attr
- #define SRC_PORT(x) (x)->src_port
- // Message types
- typedef enum msg_t_ {
- INTEREST,
- POSITIVE_REINFORCEMENT,
- NEGATIVE_REINFORCEMENT,
- DATA,
- EXPLORATORY_DATA,
- PUSH_EXPLORATORY_DATA,
- CONTROL,
- REDIRECT
- } diff_msg_t;
- // Header structure
- struct hdr_diff {
- int32_t last_hop; // forwarder node id
- int32_t next_hop; // next hop node id
- int8_t version; // protocol version
- int8_t msg_type; // message type
- int16_t data_len; // data length
- int32_t pkt_num; // packet number
- int32_t rdm_id; // random id
- int16_t num_attr; // number of attributes
- int16_t src_port; // sender port id
- };
- #define HDR_DIFF(x) (struct hdr_diff *)(x)
- #endif // !_HEADER_HH_