Update README and add contrib dir

contrib/tsn/model/frer-sequence-encode-decode-function.cc

@@ -0,0 +1,104 @@
+#include "frer-sequence-encode-decode-function.h"
+
+#include "ns3/log.h"
+#include "ns3/packet.h"
+
+#include "ns3/ethernet-header2.h"
+
+namespace ns3
+{
+
+NS_LOG_COMPONENT_DEFINE("SequenceEncodeDecodeFunction");
+
+NS_OBJECT_ENSURE_REGISTERED(SequenceEncodeDecodeFunction);
+
+TypeId
+SequenceEncodeDecodeFunction::GetTypeId()
+{
+    static TypeId tid =
+        TypeId("ns3::SequenceEncodeDecodeFunction")
+            .SetParent<Object>()
+            .SetGroupName("tsn")
+            .AddConstructor<SequenceEncodeDecodeFunction>()
+            .AddAttribute("Direction",
+                          "A Boolean object indicating whether the Sequence encode/decode function is to be placed on the out-facing (True) or in-facing (False) side of the port",
+                          BooleanValue(false),
+                          MakeBooleanAccessor(&SequenceEncodeDecodeFunction::m_frerSeqEncDirection),
+                          MakeBooleanChecker())
+            .AddAttribute("Active",
+                          "A Boolean value specifying whether this frerSeqEncEntry is passive (False) or active (True).",
+                          BooleanValue(false),
+                          MakeBooleanAccessor(&SequenceEncodeDecodeFunction::m_frerSeqEncActive),
+                          MakeBooleanChecker());
+    return tid;
+}
+
+
+SequenceEncodeDecodeFunction::SequenceEncodeDecodeFunction()
+{
+    NS_LOG_FUNCTION(this);
+}
+
+SequenceEncodeDecodeFunction::~SequenceEncodeDecodeFunction()
+{
+    NS_LOG_FUNCTION(this);
+}
+
+void
+SequenceEncodeDecodeFunction::SetStreamHandle(std::vector<uint32_t> seqEncStreamList)
+{
+    NS_LOG_FUNCTION(this);
+    m_frerSeqEncStreamList = seqEncStreamList;
+}
+
+void
+SequenceEncodeDecodeFunction::SetPort(Ptr<TsnNetDevice> seqEncPort)
+{
+    NS_LOG_FUNCTION(this);
+    m_frerSeqEncPort = seqEncPort;
+}
+
+bool
+SequenceEncodeDecodeFunction::IsApplicable(uint32_t streamHandle, Ptr<TsnNetDevice> port, bool direction)
+{
+  NS_LOG_FUNCTION(this);
+  if (m_frerSeqEncPort == port && m_frerSeqEncDirection == direction)
+  {
+    for (uint32_t i = 0; i < m_frerSeqEncStreamList.size(); i++)
+    {
+      if(m_frerSeqEncStreamList[i]==streamHandle)
+      {
+        return true;
+      }
+    }
+  }
+  return false;
+}
+
+void
+SequenceEncodeDecodeFunction::Encode(Ptr<Packet> p, uint16_t seqNumber)
+{
+  NS_LOG_FUNCTION(this);
+  if (m_frerSeqEncActive)
+  {
+    EthernetHeader2 header;
+    p->RemoveHeader(header);
+    header.SetRedundancyTag(seqNumber);
+    p->AddHeader(header);
+  }
+}
+
+uint16_t
+SequenceEncodeDecodeFunction::Decode(Ptr<Packet> p)
+{
+  NS_LOG_FUNCTION(this);
+  EthernetHeader2 header;
+  p->RemoveHeader(header);
+  uint16_t seqNumber = header.RemoveRedundancyTag();
+  p->AddHeader(header);
+  return seqNumber;
+}
+
+
+
+}