private bool RemoveRecord(ForwardingRecord record)
{
if (!ForwardingTable.ContainsKey(record.InputPort))
{
return(false);
}
List <ForwardingRecord> scope = ForwardingTable[record.InputPort];
ForwardingRecord toRemove = null;
foreach (ForwardingRecord scopeRecord in scope)
{
if (record.Equals(scopeRecord))
{
toRemove = scopeRecord;
break;
}
}
if (toRemove != null)
{
ClearCredentials(toRemove);
ForwardingTable[record.InputPort].Remove(toRemove);
return(true);
}
return(false);
}
private bool ClearCredentials(ForwardingRecord record)
{
Frame inputCredential = (Frame)InputCredentials[record.InputPort];
Frame outputCredential = (Frame)OutputCredentials[record.OutputPort];
bool result = true;
result = result && inputCredential.ClearVirtualContainer(record.ContainerLevel, record.HigherPathIn, record.VcNumberIn);
result = result && outputCredential.ClearVirtualContainer(record.ContainerLevel, record.HigherPathOut, record.VcNumberOut);
return(result);
}
private bool CheckForwardingRecord(ForwardingRecord record)
{
VirtualContainer vc = new VirtualContainer(record.ContainerLevel);
if (InputCredentials[record.InputPort].SetVirtualContainer(record.ContainerLevel, record.HigherPathIn, record.VcNumberIn == -1 ? null : (int?)record.VcNumberIn, vc))
{
if (OutputCredentials[record.OutputPort].SetVirtualContainer(record.ContainerLevel, record.HigherPathOut, record.VcNumberOut == -1 ? null : (int?)record.VcNumberOut, vc))
{
return(true);
}
((Frame)InputCredentials[record.InputPort]).ClearVirtualContainer(record.ContainerLevel, record.HigherPathIn, record.VcNumberIn == -1 ? null : (int?)record.VcNumberIn);
}
return(false);
}
