public unsafe Forwarder(string pci1, string pci2)
{
GCSettings.LatencyMode = GCLatencyMode.SustainedLowLatency;
if (String.IsNullOrEmpty(pci1) || String.IsNullOrEmpty(pci2))
{
Log.Error("Please provide two pci addresses");
Environment.Exit(1);
}
var dev1 = new IxgbeDevice(pci1, 1, 1);
var dev2 = new IxgbeDevice(pci2, 1, 1);
// TODO: switch to C# 7.3 and replace with Span<PacketBuffer> buffers = stackalloc PacketBuffer[BatchSize];
var buffersArray = stackalloc PacketBuffer[BatchSize];
var buffers = new Span <PacketBuffer>(buffersArray, BatchSize);
ulong counter = 0;
var stopWatch = new Stopwatch();
var stats1 = new DeviceStats(dev1);
var stats1Old = new DeviceStats(dev1);
var stats2 = new DeviceStats(dev2);
var stats2Old = new DeviceStats(dev2);
stopWatch.Start();
while (true)
{
Forward(dev1, 0, dev2, 0, buffers);
Forward(dev2, 0, dev1, 0, buffers);
stats1.Reset();
stats1Old.Reset();
stats2.Reset();
stats2Old.Reset();
//Periodically measure time
if (((counter++ % 500000) == 0) && stopWatch.ElapsedMilliseconds > 1000)
{
stopWatch.Stop();
var nanos = stopWatch.ElapsedTicks;
dev1.ReadStats(ref stats1);
stats1.PrintStatsDiff(ref stats1Old, (ulong)nanos);
stats1Old = stats1;
if (dev1 != dev2)
{
dev2.ReadStats(ref stats2);
stats2.PrintStatsDiff(ref stats2Old, (ulong)nanos);
stats2Old = stats2;
}
counter = 0;
stopWatch.Restart();
}
}
}
public unsafe PacketGenerator(string pciAddr)
{
InitMempool();
var dev = new IxgbeDevice(pciAddr, 1, 1);
// TODO: switch to C# 7.3 and replace with Span<PacketBuffer> buffers = stackalloc PacketBuffer[BatchSize];
var buffersArray = stackalloc PacketBuffer[BatchSize];
var buffers = new Span <PacketBuffer>(buffersArray, BatchSize);
var statsOld = new DeviceStats(dev);
var statsNew = new DeviceStats(dev);
ulong counter = 0;
var stopWatch = new Stopwatch();
stopWatch.Start();
int seqNum = 0;
while (true)
{
var batchCount = _mempool.GetPacketBuffers(buffers);
var batch = buffers.Slice(0, batchCount);
foreach (var buf in batch)
{
buf.WriteData(PacketSize - 4, seqNum++);
}
dev.TxBatchBusyWait(0, batch);
if ((counter++ & 0xFFF) == 0 && stopWatch.ElapsedMilliseconds > 100)
{
stopWatch.Stop();
var nanos = stopWatch.ElapsedTicks;
dev.ReadStats(ref statsNew);
statsNew.PrintStatsDiff(ref statsOld, (ulong)nanos);
statsOld = statsNew;
counter = 0;
stopWatch.Restart();
}
}
}