wifi-utils.h

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/*
 * 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 "ns3/fatal-error.h"
#include "ns3/ptr.h"
 
#include <list>
#include <map>
#include <set>
 
namespace ns3
{
 
class WifiMacHeader;
class Packet;
 
enum class WifiDirection : uint8_t
{
    DOWNLINK = 0,
    UPLINK = 1,
    BOTH_DIRECTIONS = 2,
};
 
inline std::ostream&
operator<<(std::ostream& os, const WifiDirection& direction)
{
    switch (direction)
    {
    case WifiDirection::DOWNLINK:
        return (os << "DOWNLINK");
    case WifiDirection::UPLINK:
        return (os << "UPLINK");
    case WifiDirection::BOTH_DIRECTIONS:
        return (os << "BOTH_DIRECTIONS");
    default:
        NS_FATAL_ERROR("Invalid direction");
        return (os << "INVALID");
    }
}
 
using WifiTidLinkMapping = std::map<uint8_t, std::set<uint8_t>>;
 
double DbmToW(double dbm);
double DbToRatio(double db);
double WToDbm(double w);
double RatioToDb(double ratio);
uint32_t GetAckSize();
uint32_t GetBlockAckSize(BlockAckType type);
uint32_t GetBlockAckRequestSize(BlockAckReqType type);
uint32_t GetMuBarSize(std::list<BlockAckReqType> types);
uint32_t GetRtsSize();
uint32_t GetCtsSize();
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);
 
bool TidToLinkMappingValidForNegType1(const WifiTidLinkMapping& dlLinkMapping,
                                      const WifiTidLinkMapping& ulLinkMapping);
 
static constexpr uint16_t SEQNO_SPACE_SIZE = 4096;
 
static constexpr uint16_t SEQNO_SPACE_HALF_SIZE = SEQNO_SPACE_SIZE / 2;
 
static constexpr uint8_t SINGLE_LINK_OP_ID = 0;
 
static constexpr uint8_t WIFI_LINKID_UNDEFINED = 0xff;
 
} // namespace ns3
 
#endif /* WIFI_UTILS_H */