private void Initialize(MemoryStream ms, OfpHeader header)
{
if (!_versionChecked)
{
_version = header.Version;
_versionChecked = true;
var reply = new OfpSwitchFeaturesRequest();
_log.Debug("Request for features");
//Console.WriteLine("Request for features");
Write(reply.ToByteArray());
}
else if (header.Type == OfpType.OFPT_FEATURES_REPLY)
{
OfpSwitchFeatures features = new OfpSwitchFeatures(ms, header);
_mac = features.DatapathId.GetPhysicalAddress();
_log.Info($"A switch connected - MAC={_mac}");
//Console.WriteLine($"A switch connected - MAC={_mac}");
foreach (var ofpPhyPort in features.Ports)
{
//Console.WriteLine($"\tPortNum={ofpPhyPort.PortNo} \tPortName={ofpPhyPort.Name} \tPortState={ofpPhyPort.State.ToString()}");
}
SwitchFeatures = features;
_featureChecked = true;
var reply = new OfpSwitchConfig(true);
reply.Flags = OfpConfigFlags.OFPC_FRAG_NORMAL;
reply.MissSendLen = 65535;
Write(reply.ToByteArray());
var reply2 = new OfpSwitchConfigRequest();
Write(reply2.ToByteArray());
}
else if (header.Type == OfpType.OFPT_GET_CONFIG_REPLY)
{
OfpSwitchConfig config = new OfpSwitchConfig(ms, header);
_log.Info($"[{_mac}] Config: Flag={config.Flags} MissSendLen={config.MissSendLen}");
//Console.WriteLine($"[{_mac}] Config: Flag={config.Flags} MissSendLen={config.MissSendLen}");
_configChecked = true;
return;
}
else if (header.Type == OfpType.OFPT_ECHO_REQUEST)
{
OfpEcho echo = new OfpEcho(ms, header);
_version = echo.Header.Version;
_versionChecked = true;
var reply = new OfpEcho(true);
reply.Data = echo.Data;
Write(reply.ToByteArray());
}
else if (header.Type == OfpType.OFPT_ERROR)
{
OfpErrorMsg error = new OfpErrorMsg(ms, header);
_log.Info($"[{_mac}] Error: type={error.Type.ToString()} code={error.GetErrorCode()}");
//Console.WriteLine($"[{_mac}] Error: type={error.Type.ToString()} code={error.GetErrorCode()}");
return;
}
else
{
return;
}
}
private void Features(MemoryStream ms, OfpHeader header)
{
if (header.Type == OfpType.OFPT_FEATURES_REQUEST)
{
return;
}
else
{
OfpSwitchFeatures features = new OfpSwitchFeatures(ms, header);
_controller.PluginSystem.SwitchFeatures(features, this);
}
}
/// <summary>
/// 处理交换机功能
/// </summary>
/// <param name="features"></param>
/// <param name="handler"></param>
/// <returns></returns>
public virtual bool SwitchFeatures(OfpSwitchFeatures features, IConnection handler)
{
foreach (var plugin in Plugins.Values.Where(plugin => plugin.Active))
{
try
{
bool result = plugin.MessageHandler.SwitchFeatures(features, handler);
if (result)
{
break;
}
}
catch (Exception e)
{
Debug.WriteLine(e);
}
}
return(true);
}
public void AddSwitch(OfpSwitchFeatures switchFeatures, IConnection connection)
{
var name = switchFeatures.DatapathId.ToSwitchString();
var sw = new Switch(switchFeatures, connection);
if (!_switches.ContainsKey(name))
{
_switches.TryAdd(name, sw);
}
else
{
_switches[name] = sw;
}
if (!Adjacency.ContainsKey(name) || Adjacency[name] == null)
{
Adjacency[name] = new ConcurrentDictionary <string, Link>();
}
_topoVer++;
}
public void TestOfpSwitchFeatures()
{
OfpSwitchFeatures dst;
OfpSwitchFeatures src = new OfpSwitchFeatures()
{
Actions = (OfpActionCapabilities)(1 << 12 - 1),
Capabilities = OfpCapabilities.OFPC_TABLE_STATS | OfpCapabilities.OFPC_PORT_STATS,
DatapathId = 1234567u,
NBuffers = 10,
NTables = 1,
Ports = new List <OfpPhyPort>()
{
new OfpPhyPort()
{
Advertised = OfpPortFeatures.OFPPF_100MB_HD, State = OfpPortState.OFPPS_STP_LISTEN, Curr = OfpPortFeatures.OFPPF_100MB_FD, Peer = OfpPortFeatures.OFPPF_FIBER, Name = "TestPort", HwAddr = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06 }, Supported = OfpPortFeatures.OFPPF_1GB_HD, PortNo = (ushort)OfpPort.OFPP_FLOOD, Config = OfpPortConfig.OFPPC_NO_FLOOD
},
new OfpPhyPort()
{
Advertised = OfpPortFeatures.OFPPF_100MB_HD, State = OfpPortState.OFPPS_STP_LISTEN, Curr = OfpPortFeatures.OFPPF_100MB_FD, Peer = OfpPortFeatures.OFPPF_FIBER, Name = "TestPort2", HwAddr = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06 }, Supported = OfpPortFeatures.OFPPF_1GB_HD, PortNo = (ushort)OfpPort.OFPP_FLOOD, Config = OfpPortConfig.OFPPC_NO_FLOOD
}
}
};
using (MemoryStream ms = new MemoryStream(src.ToByteArray()))
{
dst = new OfpSwitchFeatures(ms);
}
Assert.AreEqual(src.Actions, dst.Actions);
Assert.AreEqual(src.Capabilities, dst.Capabilities);
Assert.AreEqual(src.DatapathId, dst.DatapathId);
Assert.AreEqual(src.NBuffers, dst.NBuffers);
Assert.AreEqual(src.NTables, dst.NTables);
Assert.AreEqual(src.Ports[0].Name, dst.Ports[0].Name);
Assert.AreEqual(src.Ports[1].Name, dst.Ports[1].Name);
Assert.IsTrue(dst.Capabilities.HasFlag(OfpCapabilities.OFPC_PORT_STATS));
Assert.IsFalse(dst.Capabilities.HasFlag(OfpCapabilities.OFPC_RESERVED));
Assert.IsTrue(dst.Actions.HasFlag(OfpActionCapabilities.OFPAT_ENQUEUE));
}
/// <summary>
/// 处理交换机功能
/// </summary>
/// <param name="features"></param>
/// <param name="handler"></param>
/// <returns></returns>
public virtual bool SwitchFeatures(OfpSwitchFeatures features, IConnection handler)
{
return(false);
}
public Switch(OfpSwitchFeatures features, IConnection connection)
{
Features = features;
Connection = connection;
}
