Update README and add contrib dir

contrib/tsn/model/tas.h

@@ -0,0 +1,118 @@
+#ifndef TAS_H
+#define TAS_H
+
+#include "ns3/object.h"
+#include "ns3/nstime.h"
+#include "ns3/data-rate.h"
+
+#include "ns3/tsn-net-device.h"
+#include "ns3/transmission-gate.h"
+#include "ns3/tsn-transmission-selection-algo.h"
+
+namespace ns3
+{
+
+class TsnNetDevice;
+class TsnTransmissionSelectionAlgo;
+
+class Tas: public Object
+{
+  public:
+    /**
+     * \brief Get the TypeId
+     *
+     * \return The TypeId for this class
+     */
+    static TypeId GetTypeId();
+
+    /**
+     * \brief Create a Tas
+     */
+    Tas();
+
+    /**
+     * Destroy a Tas
+     *
+     * This is the destructor for the Tas.
+     */
+    ~Tas();
+
+    // Delete copy constructor and assignment operator to avoid misuse
+    Tas& operator=(const Tas&) = delete;
+    Tas(const Tas&) = delete;
+
+    void SetTsnNetDevice(Ptr<TsnNetDevice> net);
+
+    bool IsEnable();
+    bool IsSendable(Ptr<const Packet> p, DataRate d, uint8_t preambleAndSFDGap, uint8_t interframeGap, uint32_t mtu);
+
+    void AddTsa(Ptr<TsnTransmissionSelectionAlgo> tsa);
+    void AddTransmissionGate();
+
+    void Start();
+    void ClockUpdate();
+
+    bool IsGateOpen(int i);
+
+    void AddGclEntry(Time duration, uint8_t states);
+
+    enum GuardBandModes
+    {
+        NONE,
+        MTU,
+        PKTSIZE,
+    };
+
+    Time GetHardwareLatency();
+
+  protected:
+
+  private:
+    void UpdateGates(bool clockUpdate);
+    int GetCurrentGclEntry();
+    Time GetLastOpeningTime(Time currentTime);
+
+    /**
+    * The TransmissionGates which this TsnNetDevice uses
+    */
+    std::vector<Ptr<TransmissionGate>> m_transmissionGates;
+
+    Ptr<TsnNetDevice> m_net;
+    Callback<void> GateUpdateCallback;
+    /**
+     * \ingroup tsn
+     * Structure holding a gcl entry
+     */
+    struct GclEntry
+    {
+        Time duration;
+        uint8_t states;
+    };
+
+    std::vector<Ptr<TsnTransmissionSelectionAlgo>> m_transmissionSelectionAlgos;
+    /**
+    * The GateControlList which this TsnNetDevice uses
+    */
+    std::vector<GclEntry> m_GateControlList;
+    int m_CurrentGclEntry = 0;
+
+    Time m_cycleDuration;
+    Time m_startTime;
+    Time m_lastGateOpeningTime;
+    bool m_start = false;
+    EventId m_NextGatesUpdate;
+    bool m_MultidropMode;
+
+    GuardBandModes m_GuardBandMode;
+
+    TracedCallback<uint8_t> m_gatesUpdate;
+
+    uint16_t m_maxGclEntryNumber;
+    Time m_maxGclTimeInterval;
+    Time m_maxGclCycleDuration;
+    Time m_minLatencyOverhead;
+    Time m_maxLatencyOverhead;
+};
+
+}
+#endif /* TAS_H */