Update README and add contrib dir

contrib/tsn/model/frer-vector-recovery-function.h

@@ -0,0 +1,51 @@
+#ifndef FRER_VECTOR_RECOVERY_FUNCTION_H
+#define FRER_VECTOR_RECOVERY_FUNCTION_H
+
+#include "ns3/frer-base-recovery-function.h"
+
+
+namespace ns3
+{
+
+class VectorRecoveryFunction : public BaseRecoveryFunction
+{
+  public:
+    /**
+     * \brief Get the TypeId
+     *
+     * \return The TypeId for this class
+     */
+    static TypeId GetTypeId();
+
+    /**
+     * \brief Create a VectorRecoveryFunction
+     */
+    VectorRecoveryFunction();
+
+    /**
+     * Destroy a VectorRecoveryFunction
+     *
+     * This is the destructor for the VectorRecoveryFunction.
+     */
+    ~VectorRecoveryFunction();
+
+    // Delete copy constructor and assignment operator to avoid misuse
+    VectorRecoveryFunction& operator=(const VectorRecoveryFunction&) = delete;
+    VectorRecoveryFunction(const VectorRecoveryFunction&) = delete;
+
+    bool DoRecovery(uint16_t seqNumber) override;
+
+  protected:
+
+
+  private:
+    std::vector<bool> m_sequenceHistory;      //802.1CB-2017 : 7.4.3.2.2
+    int m_frerSeqRcvyHistoryLenght;           //802.1CB-2017 : 10.4.1.6
+    uint m_frerCpsSeqRcvyRoguePackets = 0;    //802.1CB-2017 : 10.8.4
+
+    uint16_t m_maxFrerSeqRcvyHistoryLenght;
+
+};
+
+}
+#endif /* FRER_VECTOR_RECOVERY_FUNCTION_H */