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sta-wifi-mac.h
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2006, 2009 INRIA
4  * Copyright (c) 2009 MIRKO BANCHI
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation;
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18  *
19  * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
20  * Author: Mirko Banchi <mk.banchi@gmail.com>
21  */
22 #ifndef STA_WIFI_MAC_H
23 #define STA_WIFI_MAC_H
24 
25 #include "regular-wifi-mac.h"
26 
27 #include "ns3/event-id.h"
28 #include "ns3/packet.h"
29 #include "ns3/traced-callback.h"
30 
31 #include "supported-rates.h"
32 #include "amsdu-subframe-header.h"
33 
34 namespace ns3 {
35 
36 class MgtAddBaRequestHeader;
37 
43 class StaWifiMac : public RegularWifiMac
44 {
45 public:
46  static TypeId GetTypeId (void);
47 
48  StaWifiMac ();
49  virtual ~StaWifiMac ();
50 
59  virtual void Enqueue (Ptr<const Packet> packet, Mac48Address to);
60 
65  void SetMaxMissedBeacons (uint32_t missed);
72  void SetProbeRequestTimeout (Time timeout);
79  void SetAssocRequestTimeout (Time timeout);
80 
84  void StartActiveAssociation (void);
85 
86 private:
87  enum MacState
88  {
89  ASSOCIATED,
90  WAIT_PROBE_RESP,
91  WAIT_ASSOC_RESP,
92  BEACON_MISSED,
93  REFUSED
94  };
95 
96  void SetActiveProbing (bool enable);
97  bool GetActiveProbing (void) const;
98  virtual void Receive (Ptr<Packet> packet, const WifiMacHeader *hdr);
99  void SendProbeRequest (void);
100  void SendAssociationRequest (void);
101  void TryToEnsureAssociated (void);
102  void AssocRequestTimeout (void);
103  void ProbeRequestTimeout (void);
104  bool IsAssociated (void) const;
105  bool IsWaitAssocResp (void) const;
106  void MissedBeacons (void);
107  void RestartBeaconWatchdog (Time delay);
108  SupportedRates GetSupportedRates (void) const;
109  void SetState (enum MacState value);
110 
111  enum MacState m_state;
112  Time m_probeRequestTimeout;
113  Time m_assocRequestTimeout;
114  EventId m_probeRequestEvent;
115  EventId m_assocRequestEvent;
116  EventId m_beaconWatchdog;
117  Time m_beaconWatchdogEnd;
118  uint32_t m_maxMissedBeacons;
119 
120  TracedCallback<Mac48Address> m_assocLogger;
121  TracedCallback<Mac48Address> m_deAssocLogger;
122 };
123 
124 } // namespace ns3
125 
126 #endif /* STA_WIFI_MAC_H */