mac-802_11.h

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/* -*-	Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*-
 *
 * EDCF/HCF module extension for ns-2.1b9a
 * Referred to P802_11E-D4_0.doc
 * By Antonio Annese - antonio1979[at]libero.it
 * 
 * G.Boggia, P.Camarda, A.Grieco, S.Mascolo
 * Dipartimento di Elettrotecnica ed Elettronica, Politecnico di Bari
 * Via Orabona,4 - 70125 BARI, Italy
 * July, 2003
 *
 *
 * Copyright (c) 2003 Politecnico di Bari, Italy.  
 * All rights reserved.
 *
 *
 * ParaQ module extension for ns-2.1b9
 * by Fabio A. Favia [faz(at)lugbari.org]
 * July, 2004
 *
 * Copyright (c) 2004 Politecnico di Bari, Italy.
 * 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 and binary code must contain
 * the above copyright notice, this list of conditions and the following 
 * disclaimer.
 * 
 * 2. All advertising materials mentioning features or use of this software
 * must display the following acknowledgement: 
 * This product includes software developed at Politecnico di Bari, Italy
 *
 * 3. The name of the University may not be used to endorse or promote 
 * products derived from this software without specific prior written 
 * permission.
 * POLITECNICO DI BARI, ITALY, MAKES NO REPRESENTATIONS 
 * CONCERNING EITHER THE MERCHANTABILITY OF THIS SOFTWARE OR THE 
 * SUITABILITY OF THIS SOFTWARE FOR ANY PARTICULAR PURPOSE. The software 
 * is provided "as is" without express or implied warranty of any kind.
 *
 *
 * 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/mac/mac-802_11.h,v 1.20 2002/03/14 01:12:53 haldar Exp $
 *
 * Ported from CMU/Monarch's code, nov'98 -Padma.
 * wireless-mac-802_11.h
 */

#ifndef ns_mac_80211_h
#define ns_mac_80211_h

#include "mac-timers.h"
#include "marshall.h"

//@@ FaZ
//#include "mac.h"
//@ FaZ

#include "qos-priqueue.h"

#define GET_ETHER_TYPE(x)		GET2BYTE((x))
#define SET_ETHER_TYPE(x,y)            {u_int16_t t = (y); STORE2BYTE(x,&t);}

/* ======================================================================
   Frame Formats
   ====================================================================== */

#define	MAC_ProtocolVersion	0x00

#define MAC_Type_Management	0x00
#define MAC_Type_Control	0x01
#define MAC_Type_Data		0x02
#define MAC_Type_Reserved	0x03

#define MAC_Subtype_RTS		0x0B
#define MAC_Subtype_CTS		0x0C
#define MAC_Subtype_ACK		0x0D
#define MAC_Subtype_Data	0x00
#define MAC_Subtype_Beacon	0x08

//@@ FaZ 6/7/04
#define MAC_Subtype_SchElem	0x0E	// THIS IS NOT STANDARD, ONLY FOR SIMULATION !!!!
//@ FaZ 6/7/04

#define MAC_Subtype_QoS_CFPoll	0x0E
#define MAC_Subtype_QoS_Null	0x0F



struct frame_control {
	u_char		fc_subtype		: 4;
	u_char		fc_type			: 2;
	u_char		fc_protocol_version	: 2;

	u_char		fc_order		: 1;
	u_char		fc_wep			: 1;
	u_char		fc_more_data		: 1;
	u_char		fc_pwr_mgt		: 1;
	u_char		fc_retry		: 1;
	u_char		fc_more_frag		: 1;
	u_char		fc_from_ds		: 1;
	u_char		fc_to_ds		: 1;
};

struct rts_frame {
	struct frame_control	rf_fc;
	u_int16_t		rf_duration;
	u_char			rf_ra[ETHER_ADDR_LEN];
	u_char			rf_ta[ETHER_ADDR_LEN];
	u_char			rf_fcs[ETHER_FCS_LEN];
};

struct cts_frame {
	struct frame_control	cf_fc;
	u_int16_t		cf_duration;
	u_char			cf_ra[ETHER_ADDR_LEN];
	u_char			cf_fcs[ETHER_FCS_LEN];
};

struct ack_frame {
	struct frame_control	af_fc;
	u_int16_t		af_duration;
	u_char			af_ra[ETHER_ADDR_LEN];
	u_char			af_fcs[ETHER_FCS_LEN];
};

// XXX This header does not have its header access function because it shares
// the same header space with hdr_mac.
struct hdr_mac802_11 {
	struct frame_control	dh_fc;
	u_int16_t		dh_duration;
	u_char			dh_da[ETHER_ADDR_LEN];
	u_char			dh_sa[ETHER_ADDR_LEN];
	u_char			dh_bssid[ETHER_ADDR_LEN];
	u_int16_t		dh_scontrol;
	u_char			dh_qos_control_tc;	// It carries the TC
	u_char			dh_qos_control_ds;	// It carries TXOP duration in units of 32 us or Queue size in units of 256 octets
	u_char			dh_body[0]; // XXX Non-ANSI
};

struct beacon_frame {
	struct frame_control	bf_fc;    // we have to set bf_fc.type=00,bf_fc.subtype=1000 *F@Z*
	u_int16_t		bf_duration;
	u_char			bf_da[ETHER_ADDR_LEN];  // unsigned char is lenght 8 bit just like bf_da[] element
	u_char			bf_sa[ETHER_ADDR_LEN];
	u_char			bf_bssid[ETHER_ADDR_LEN];
	u_int16_t		bf_scontrol;
	u_char			bf_body[0];			// XXX Non-ANSI
#define BEACON_BODY_LEN		(8+2+2+10+2+3+8+2+12)
	// Broadcast SSID; 8 supported rates; no FH/IBSS param
	// sets; 7 partial virtual bitmap elements in TIM
        /*F@Z Comment
        *  8 octets -> Timestamp
        *  2 octets -> Beacon Interval (it's not declared here but in bf_beacon_interval)
        *  2 octets -> Capability Infos
        * variable fields
        *  2 + 0 oct -> SSID Broadcast
        *  2 + 8 oct -> 8 Supported Rates
        *  2 + 0 oct -> no FH
        *  2 + 1 oct -> DS
        *  2 + 6 oct -> CF
        *  2 + 0 oct -> no IBSS
        *  5 + 7 oct -> TIM
        * end F@Z Comment
        */
	u_int16_t		bf_beacon_interval;		// is part of beacon frame body
        /* posso mettere qui la definizione per il TIM oppure creare una struttura ad hoc,
	*  devo mettere anche Capability (vd. pag 67 IEEE-802.11)?
        *  u_char       bf_eid;     // Element ID (1 octet)
        *  u_char       bf_lenght;  // Lenght (1 octet)
        *  u_char       bf_dtimc;   // DTIM Count (1 octet)
        *  u_char       bf_dtimp;   // DTIM Period (1 octet)
        *  u_char       bf_bmc;     // Bitmap Control (1 octet)
        *  ora la Virtual Bitmap posso farla in due modi
        *  u_char       bf_vbm[56]; // Virtual Bitmap (7 octet) in array dove ogni elemento