wifi-utils.h

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/* -*-  Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
/*
 * Copyright (c) 2016
 *
 * 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
 *
 * Author: Sébastien Deronne <sebastien.deronne@gmail.com>
 */

#ifndef WIFI_UTILS_H
#define WIFI_UTILS_H

#include "block-ack-type.h"
#include "wifi-preamble.h"
#include "wifi-mode.h"

namespace ns3 {

class WifiNetDevice;
class WifiMacHeader;
class WifiMode;
class Packet;
class Time;

double DbmToW (double dbm);
double DbToRatio (double db);
double WToDbm (double w);
double RatioToDb (double ratio);
uint16_t ConvertGuardIntervalToNanoSeconds (WifiMode mode, const Ptr<WifiNetDevice> device);
uint16_t ConvertGuardIntervalToNanoSeconds (WifiMode mode, bool htShortGuardInterval, Time heGuardInterval);
WifiPreamble GetPreambleForTransmission (WifiModulationClass modulation, bool useShortPreamble, bool useGreenfield);
uint16_t GetChannelWidthForTransmission (WifiMode mode, uint16_t maxSupportedChannelWidth);
bool IsAllowedControlAnswerModulationClass (WifiModulationClass modClassReq, WifiModulationClass modClassAnswer);
uint32_t GetAckSize (void);
uint32_t GetBlockAckSize (BlockAckType type);
uint32_t GetBlockAckRequestSize (BlockAckType type);
uint32_t GetRtsSize (void);
uint32_t GetCtsSize (void);
bool IsInWindow (uint16_t seq, uint16_t winstart, uint16_t winsize);
void AddWifiMacTrailer (Ptr<Packet> packet);
uint32_t GetSize (Ptr<const Packet> packet, const WifiMacHeader *hdr, bool isAmpdu);
Time GetPpduMaxTime (WifiPreamble preamble);

bool IsHt (WifiPreamble preamble);
bool IsVht (WifiPreamble preamble);
bool IsHe (WifiPreamble preamble);

const uint16_t SEQNO_SPACE_SIZE = 4096;

const uint16_t SEQNO_SPACE_HALF_SIZE = SEQNO_SPACE_SIZE / 2;
} // namespace ns3

#endif /* WIFI_UTILS_H */