packet.h.svn-base

diff serve for ns-2, work for version 2.29

/* -*-	Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */
/*
 * Copyright (c) 1997 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 Computer Systems
 *	Engineering Group at Lawrence Berkeley Laboratory.
 * 4. Neither the name of the University nor of the Laboratory 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: /nfs/jade/vint/CVSROOT/ns-2/common/packet.h,v 1.98 2005/09/18 23:33:31 tomh Exp $ (LBL)
 */

#ifndef ns_packet_h
#define ns_packet_h

#include <string.h>
#include <assert.h>

#include "config.h"
#include "scheduler.h"
#include "object.h"
#include "lib/bsd-list.h"
#include "packet-stamp.h"
#include "ns-process.h"

// Used by wireless routing code to attach routing agent
#define RT_PORT		255	/* port that all route msgs are sent to */

#define HDR_CMN(p)      (hdr_cmn::access(p))
#define HDR_ARP(p)      (hdr_arp::access(p))
#define HDR_MAC(p)      (hdr_mac::access(p))
#define HDR_MAC802_11(p) ((hdr_mac802_11 *)hdr_mac::access(p))
#define HDR_MAC_TDMA(p) ((hdr_mac_tdma *)hdr_mac::access(p))
#define HDR_SMAC(p)     ((hdr_smac *)hdr_mac::access(p))
#define HDR_LL(p)       (hdr_ll::access(p))
#define HDR_HDLC(p)     ((hdr_hdlc *)hdr_ll::access(p))
#define HDR_IP(p)       (hdr_ip::access(p))
#define HDR_RTP(p)      (hdr_rtp::access(p))
#define HDR_TCP(p)      (hdr_tcp::access(p))
#define HDR_SCTP(p)     (hdr_sctp::access(p))
#define HDR_SR(p)       (hdr_sr::access(p))
#define HDR_TFRC(p)     (hdr_tfrc::access(p))
#define HDR_TORA(p)     (hdr_tora::access(p))
#define HDR_IMEP(p)     (hdr_imep::access(p))
#define HDR_CDIFF(p)    (hdr_cdiff::access(p))  /* chalermak's diffusion*/
//#define HDR_DIFF(p)     (hdr_diff::access(p))  /* SCADD's diffusion ported into ns */
#define HDR_LMS(p)		(hdr_lms::access(p))

/* --------------------------------------------------------------------*/

enum packet_t {
	PT_TCP,
	PT_UDP,
	PT_CBR,
	PT_AUDIO,
	PT_VIDEO,
	PT_ACK,
	PT_START,
	PT_STOP,
	PT_PRUNE,
	PT_GRAFT,
	PT_GRAFTACK,
	PT_JOIN,
	PT_ASSERT,
	PT_MESSAGE,
	PT_RTCP,
	PT_RTP,
	PT_RTPROTO_DV,
	PT_CtrMcast_Encap,
	PT_CtrMcast_Decap,
	PT_SRM,
	/* simple signalling messages */
	PT_REQUEST,	
	PT_ACCEPT,	
	PT_CONFIRM,	
	PT_TEARDOWN,	
	PT_LIVE,	// packet from live network
	PT_REJECT,

	PT_TELNET,	// not needed: telnet use TCP
	PT_FTP,
	PT_PARETO,
	PT_EXP,
	PT_INVAL,
	PT_HTTP,

	/* new encapsulator */
	PT_ENCAPSULATED,
	PT_MFTP,

	/* CMU/Monarch's extnsions */
	PT_ARP,
	PT_MAC,
	PT_TORA,
	PT_DSR,
	PT_AODV,
	PT_IMEP,

	// RAP packets
	PT_RAP_DATA,
	PT_RAP_ACK,

	PT_TFRC,
	PT_TFRC_ACK,
	PT_PING,

	// Diffusion packets - Chalermek
	PT_DIFF,

	// LinkState routing update packets
	PT_RTPROTO_LS,

	// MPLS LDP header
	PT_LDP,

	// GAF packet
        PT_GAF,  

	// ReadAudio traffic
	PT_REALAUDIO,

	// Pushback Messages
	PT_PUSHBACK,

#ifdef HAVE_STL
	// Pragmatic General Multicast
	PT_PGM,
#endif //STL

	// LMS packets
	PT_LMS,
	PT_LMS_SETUP,

	PT_SCTP,
	PT_SCTP_APP1,

	// SMAC packet
	PT_SMAC,

	// XCP packet
	PT_XCP,
	
	// HDLC packet
	PT_HDLC,

	// insert new packet types here
	PT_NTYPE // This MUST be the LAST one
};

class p_info {
public:
	p_info() {
		name_[PT_TCP]= "tcp";
		name_[PT_UDP]= "udp";
		name_[PT_CBR]= "cbr";
		name_[PT_AUDIO]= "audio";
		name_[PT_VIDEO]= "video";
		name_[PT_ACK]= "ack";
		name_[PT_START]= "start";
		name_[PT_STOP]= "stop";
		name_[PT_PRUNE]= "prune";
		name_[PT_GRAFT]= "graft";
		name_[PT_GRAFTACK]= "graftAck";
		name_[PT_JOIN]= "join";
		name_[PT_ASSERT]= "assert";
		name_[PT_MESSAGE]= "message";
		name_[PT_RTCP]= "rtcp";
		name_[PT_RTP]= "rtp";
		name_[PT_RTPROTO_DV]= "rtProtoDV";
		name_[PT_CtrMcast_Encap]= "CtrMcast_Encap";
		name_[PT_CtrMcast_Decap]= "CtrMcast_Decap";
		name_[PT_SRM]= "SRM";

		name_[PT_REQUEST]= "sa_req";	
		name_[PT_ACCEPT]= "sa_accept";
		name_[PT_CONFIRM]= "sa_conf";
		name_[PT_TEARDOWN]= "sa_teardown";
		name_[PT_LIVE]= "live"; 
		name_[PT_REJECT]= "sa_reject";

		name_[PT_TELNET]= "telnet";
		name_[PT_FTP]= "ftp";
		name_[PT_PARETO]= "pareto";
		name_[PT_EXP]= "exp";
		name_[PT_INVAL]= "httpInval";
		name_[PT_HTTP]= "http";
		name_[PT_ENCAPSULATED]= "encap";
		name_[PT_MFTP]= "mftp";
		name_[PT_ARP]= "ARP";
		name_[PT_MAC]= "MAC";
		name_[PT_TORA]= "TORA";
		name_[PT_DSR]= "DSR";
		name_[PT_AODV]= "AODV";
		name_[PT_IMEP]= "IMEP";

		name_[PT_RAP_DATA] = "rap_data";
		name_[PT_RAP_ACK] = "rap_ack";

 		name_[PT_TFRC]= "tcpFriend";
		name_[PT_TFRC_ACK]= "tcpFriendCtl";
		name_[PT_PING]="ping";

	 	/* For diffusion : Chalermek */
 		name_[PT_DIFF] = "diffusion";

		// Link state routing updates
		name_[PT_RTPROTO_LS] = "rtProtoLS";

		// MPLS LDP packets
		name_[PT_LDP] = "LDP";

		// for GAF
                name_[PT_GAF] = "gaf";      

		// RealAudio packets
		name_[PT_REALAUDIO] = "ra";

		//pushback 
		name_[PT_PUSHBACK] = "pushback";

#ifdef HAVE_STL
		// for PGM
		name_[PT_PGM] = "PGM";
#endif //STL

		// LMS entries
		name_[PT_LMS]="LMS";
		name_[PT_LMS_SETUP]="LMS_SETUP";

		name_[PT_SCTP]= "sctp";
 		name_[PT_SCTP_APP1] = "sctp_app1";
		
		// smac
		name_[PT_SMAC]="smac";

		// HDLC
		name_[PT_HDLC]="HDLC";

		// XCP
		name_[PT_XCP]="xcp";
		
		name_[PT_NTYPE]= "undefined";
	}
	const char* name(packet_t p) const { 
		if ( p <= PT_NTYPE ) return name_[p];
		return 0;
	}
	static bool data_packet(packet_t type) {
		return ( (type) == PT_TCP || \
			 (type) == PT_TELNET || \
			 (type) == PT_CBR || \
			 (type) == PT_AUDIO || \
			 (type) == PT_VIDEO || \
			 (type) == PT_ACK || \
			 (type) == PT_SCTP || \
			 (type) == PT_SCTP_APP1 || \
			 (type) == PT_HDLC \
			);
	}
private:
	static char* name_[PT_NTYPE+1];
};
extern p_info packet_info; /* map PT_* to string name */
//extern char* p_info::name_[];


#define DATA_PACKET(type) ( (type) == PT_TCP || \
                            (type) == PT_TELNET || \
                            (type) == PT_CBR || \
                            (type) == PT_AUDIO || \
                            (type) == PT_VIDEO || \
                            (type) == PT_ACK || \
                            (type) == PT_SCTP || \
                            (type) == PT_SCTP_APP1 \
                            )


#define OFFSET(type, field)	((long) &((type *)0)->field)

class PacketData : public AppData {
public:
	PacketData(int sz) : AppData(PACKET_DATA) {
		datalen_ = sz;
		if (datalen_ > 0)
			data_ = new unsigned char[datalen_];
		else
			data_ = NULL;
	}
	PacketData(PacketData& d) : AppData(d) {
		datalen_ = d.datalen_;
		if (datalen_ > 0) {
			data_ = new unsigned char[datalen_];
			memcpy(data_, d.data_, datalen_);
		} else
			data_ = NULL;
	}
	virtual ~PacketData() { 
		if (data_ != NULL) 
			delete []data_; 
	}
	unsigned char* data() { return data_; }

	virtual int size() const { return datalen_; }