#include "wifi-mac.h"

#include "ns3/uinteger.h"

namespace ns3 {

NS_OBJECT_ENSURE_REGISTERED (WifiMac);

Time

WifiMac::GetDefaultMaxPropagationDelay (void)

{

  // 1000m 

  return Seconds (1000.0 / 300000000.0);

}

Time

WifiMac::GetDefaultSlot (void)

{

  // 802.11-a specific

  return MicroSeconds (9);

}

Time

WifiMac::GetDefaultSifs (void)

{

  // 802.11-a specific

  return MicroSeconds (16);

}

Time

WifiMac::GetDefaultEifsNoDifs (void)

{

  return GetDefaultSifs () + GetDefaultCtsAckDelay ();

}

Time

WifiMac::GetDefaultCtsAckDelay (void)

{

  // 802.11-a specific: 6mb/s

  return MicroSeconds (44);

}

Time

WifiMac::GetDefaultCtsAckTimeout (void)

{

  /* Cts_Timeout and Ack_Timeout are specified in the Annex C 

     (Formal description of MAC operation, see details on the 

     Trsp timer setting at page 346)

  */

  Time ctsTimeout = GetDefaultSifs ();

  ctsTimeout += GetDefaultCtsAckDelay ();

  ctsTimeout += GetDefaultMaxPropagationDelay () * Scalar (2);

  ctsTimeout += GetDefaultSlot ();

  return ctsTimeout;

}

TypeId 

WifiMac::GetTypeId (void)

{

  static TypeId tid = TypeId ("WifiMac")

    .SetParent<Object> ()

    .AddAttribute ("CtsTimeout", "XXX",

                   GetDefaultCtsAckTimeout (),

                   MakeTimeAccessor (&WifiMac::m_ctsTimeout),

                   MakeTimeChecker ())

    .AddAttribute ("AckTimeout", "XXX",

                   GetDefaultCtsAckTimeout (),

                   MakeTimeAccessor (&WifiMac::m_ackTimeout),

                   MakeTimeChecker ())

    .AddAttribute ("Sifs", "XXX",

                   GetDefaultSifs (),

                   MakeTimeAccessor (&WifiMac::SetSifs,

				     &WifiMac::GetSifs),

                   MakeTimeChecker ())

    .AddAttribute ("EifsNoDifs", "XXX",

		   GetDefaultEifsNoDifs (),

		   MakeTimeAccessor (&WifiMac::SetEifsNoDifs,

				     &WifiMac::GetEifsNoDifs),

		   MakeTimeChecker ())

    .AddAttribute ("Slot", "XXX",

                   GetDefaultSlot (),

                   MakeTimeAccessor (&WifiMac::SetSlot,

				     &WifiMac::GetSlot),

                   MakeTimeChecker ())

    .AddAttribute ("Pifs", "XXX",

                   GetDefaultSifs () + GetDefaultSlot (),

                   MakeTimeAccessor (&WifiMac::m_pifs),

                   MakeTimeChecker ())

    .AddAttribute ("MaxPropagationDelay", "XXX",

                   GetDefaultMaxPropagationDelay (),

                   MakeTimeAccessor (&WifiMac::m_maxPropagationDelay),

                   MakeTimeChecker ())

    .AddAttribute ("MaxMsduSize", "XXX",

		   Uinteger (2304),

		   MakeUintegerAccessor (&WifiMac::GetMaxMsduSize),

		   MakeUintegerChecker (1,2304))

    ;

  return tid;

}

void 

WifiMac::SetSlot (Time slotTime)

{

  m_slot = slotTime;

}

void

WifiMac::SetEifsNoDifs (Time eifsNoDifs)

{

  m_eifsNoDifs = eifsNoDifs;

}

void

WifiMac::SetSifs (Time sifs)

{

  m_sifs = sifs;

}

void

WifiMac::SetPifs (Time pifs)

{

  m_pifs = pifs;

}

void 

WifiMac::SetCtsTimeout (Time ctsTimeout)

{

  m_ctsTimeout = ctsTimeout;

}

void 

WifiMac::SetAckTimeout (Time ackTimeout)

{

  m_ackTimeout = ackTimeout;

}

void 

WifiMac::SetMaxPropagationDelay (Time delay)

{

  m_maxPropagationDelay = delay;

}

Time

WifiMac::GetPifs (void) const

{

  return m_pifs;

}

Time

WifiMac::GetSifs (void) const

{

  return m_sifs;

}

Time

WifiMac::GetSlot (void) const

{

  return m_slot;

}

Time 

WifiMac::GetEifsNoDifs (void) const

{

  return m_eifsNoDifs;

}

Time

WifiMac::GetCtsTimeout (void) const

{

  return m_ctsTimeout;

}

Time

WifiMac::GetAckTimeout (void) const

{

  return m_ackTimeout;

}

Time

WifiMac::GetMsduLifetime (void) const

{

  return Seconds (10);

}

Time

WifiMac::GetMaxPropagationDelay (void) const

{

  return m_maxPropagationDelay;

}

uint32_t 

WifiMac::GetMaxMsduSize (void) const

{

  return m_maxMsduSize;

}

} // namespace ns3