@Override
@LogMessageDoc(
level = "ERROR",
message = "Failed to clear all flows on switch {switch}",
explanation = "An I/O error occured while trying to clear " + "flows on the switch.",
recommendation = LogMessageDoc.CHECK_SWITCH)
public void clearAllFlowMods() {
// Delete all pre-existing flows
OFMatch match = new OFMatch().setWildcards(OFMatch.OFPFW_ALL);
OFMessage fm =
((OFFlowMod) floodlightProvider.getOFMessageFactory().getMessage(OFType.FLOW_MOD))
.setMatch(match)
.setCommand(OFFlowMod.OFPFC_DELETE)
.setOutPort(OFPort.OFPP_NONE)
.setLength(U16.t(OFFlowMod.MINIMUM_LENGTH));
fm.setXid(getNextTransactionId());
OFMessage barrierMsg =
(OFBarrierRequest)
floodlightProvider.getOFMessageFactory().getMessage(OFType.BARRIER_REQUEST);
barrierMsg.setXid(getNextTransactionId());
try {
List<OFMessage> msglist = new ArrayList<OFMessage>(1);
msglist.add(fm);
write(msglist);
msglist = new ArrayList<OFMessage>(1);
msglist.add(barrierMsg);
write(msglist);
} catch (Exception e) {
log.error("Failed to clear all flows on switch " + this, e);
}
}
public void readFrom(ByteBuffer data) {
this.queueId = data.getInt();
this.portNumber = data.getInt();
this.length = data.getShort();
data.getShort(); // pad
data.getInt(); // pad
if (this.queuePropertyFactory == null)
throw new RuntimeException("OFQueuePropertyFactory not set");
this.properties =
queuePropertyFactory.parseQueueProperties(data, U16.f(this.length) - MINIMUM_LENGTH);
}
/** @param properties the properties to set */
public OFPacketQueue setProperties(List<OFQueueProperty> properties) {
this.properties = properties;
int l = MINIMUM_LENGTH;
if (this.properties != null) {
for (OFQueueProperty prop : this.properties) {
l += prop.getLengthU();
}
}
this.length = U16.t(l);
return this;
}
/**
* Output a dpctl-styled string, i.e., only list the elements that are not wildcarded
*
* <p>A match-everything OFMatch outputs "OFMatch[]"
*
* @return "OFMatch[dl_src:00:20:01:11:22:33,nw_src:192.168.0.0/24,tp_dst:80]"
*/
@Override
public String toString() {
String str = "";
// l1
if ((wildcards & OFPFW_IN_PORT) == 0) str += "," + STR_IN_PORT + "=" + U16.f(this.inputPort);
// l2
if ((wildcards & OFPFW_DL_DST) == 0)
str += "," + STR_DL_DST + "=" + HexString.toHexString(this.dataLayerDestination);
if ((wildcards & OFPFW_DL_SRC) == 0)
str += "," + STR_DL_SRC + "=" + HexString.toHexString(this.dataLayerSource);
if ((wildcards & OFPFW_DL_TYPE) == 0)
str += "," + STR_DL_TYPE + "=0x" + Integer.toHexString(U16.f(this.dataLayerType));
if ((wildcards & OFPFW_DL_VLAN) == 0)
str += "," + STR_DL_VLAN + "=" + U16.f(this.dataLayerVirtualLan);
if ((wildcards & OFPFW_DL_VLAN_PCP) == 0)
str += "," + STR_DL_VLAN_PCP + "=" + U8.f(this.dataLayerVirtualLanPriorityCodePoint);
// l3
if (getNetworkDestinationMaskLen() > 0)
str +=
"," + STR_NW_DST + "=" + cidrToString(networkDestination, getNetworkDestinationMaskLen());
if (getNetworkSourceMaskLen() > 0)
str += "," + STR_NW_SRC + "=" + cidrToString(networkSource, getNetworkSourceMaskLen());
if ((wildcards & OFPFW_NW_PROTO) == 0) str += "," + STR_NW_PROTO + "=" + this.networkProtocol;
if ((wildcards & OFPFW_NW_TOS) == 0) str += "," + STR_NW_TOS + "=" + this.networkTypeOfService;
// l4
if ((wildcards & OFPFW_TP_DST) == 0) str += "," + STR_TP_DST + "=" + this.transportDestination;
if ((wildcards & OFPFW_TP_SRC) == 0) str += "," + STR_TP_SRC + "=" + this.transportSource;
if ((str.length() > 0) && (str.charAt(0) == ','))
str = str.substring(1); // trim the leading ","
// done
return "OFMatch[" + str + "]";
}
/*
* (non-Javadoc)
*
* @see org.flowvisor.api.FVUserAPI#getDeviceInfo()
*/
@Override
public Map<String, String> getDeviceInfo(String dpidStr) throws DPIDNotFound {
Map<String, String> map = new HashMap<String, String>();
long dpid = HexString.toLong(dpidStr);
FVClassifier fvClassifier = null;
for (FVEventHandler handler : FlowVisor.getInstance().getHandlersCopy()) {
if (handler instanceof FVClassifier) {
OFFeaturesReply featuresReply = ((FVClassifier) handler).getSwitchInfo();
if (featuresReply != null && featuresReply.getDatapathId() == dpid) {
fvClassifier = (FVClassifier) handler;
break;
}
}
}
if (fvClassifier == null)
throw new DPIDNotFound("dpid does not exist: " + dpidStr + " ::" + String.valueOf(dpid));
OFFeaturesReply config = fvClassifier.getSwitchInfo();
map.put("dpid", FlowSpaceUtil.dpidToString(dpid));
if (config != null) {
map.put("nPorts", String.valueOf(config.getPorts().size()));
String portList = "";
String portNames = "";
int p;
for (Iterator<OFPhysicalPort> it = config.getPorts().iterator(); it.hasNext(); ) {
OFPhysicalPort port = it.next();
p = U16.f(port.getPortNumber());
portList += p;
portNames += port.getName() + "(" + p + ")";
if (it.hasNext()) {
portList += ",";
portNames += ",";
}
}
map.put("portList", portList);
map.put("portNames", portNames);
} else {
FVLog.log(LogLevel.WARN, null, "null config for: " + dpidStr);
}
map.put("remote", String.valueOf(fvClassifier.getConnectionName()));
return map;
}
/**
* Handle replies to certain OFMessages, and pass others off to listeners
*
* @param sw
* @param msgs
* @throws IOException
*/
@SuppressWarnings("unchecked")
protected void handleMessages(IOFSwitchExt sw, List<OFMessage> msgs) throws IOException {
for (OFMessage m : msgs) {
// If we detect a write failure, break early so we can disconnect
if (((OFStream) sw.getInputStream()).getWriteFailure()) {
break;
}
// Always handle ECHO REQUESTS, regardless of state
switch (m.getType()) {
case ECHO_REQUEST:
OFMessageInStream in = sw.getInputStream();
OFMessageOutStream out = sw.getOutputStream();
OFEchoReply reply = (OFEchoReply) in.getMessageFactory().getMessage(OFType.ECHO_REPLY);
reply.setXid(m.getXid());
out.write(reply);
break;
case ECHO_REPLY:
// *Note, ECHO REPLIES need no handling due to last message timestamp
break;
case ERROR:
logError(sw, (OFError) m);
// fall through intentionally so error can be listened for
default:
switch (sw.getState()) {
case DISCONNECTED:
log.info("Switch {} in state DISCONNECTED, exiting message processing loop", sw);
return;
case HELLO_SENT:
if (m.getType() == OFType.HELLO) {
log.debug("HELLO from {}", sw);
sw.transitionToState(OFSwitchState.FEATURES_REQUEST_SENT);
// Send initial Features Request
sw.getOutputStream().write(factory.getMessage(OFType.FEATURES_REQUEST));
}
break;
case FEATURES_REQUEST_SENT:
if (m.getType() == OFType.FEATURES_REPLY) {
log.debug("Features Reply from {}", sw);
sw.setFeaturesReply((OFFeaturesReply) m);
// Send Description Statistics Request
OFStatisticsRequest sr = new OFStatisticsRequest();
sr.setStatisticType(OFStatisticsType.DESC);
sw.getOutputStream().write(sr);
sw.transitionToState(OFSwitchState.DESCRIPTION_STATISTICS_REQUEST_SENT);
}
break;
case DESCRIPTION_STATISTICS_REQUEST_SENT:
if (m.getType() == OFType.STATS_REPLY) {
OFStatisticsReply sr = (OFStatisticsReply) m;
if (sr.getStatisticType() == OFStatisticsType.DESC
&& sr.getStatistics().size() > 0) {
OFDescriptionStatistics desc =
(OFDescriptionStatistics) sr.getStatistics().get(0);
sw.setDescriptionStatistics(desc);
log.debug("Description Statistics Reply from {}: {}", sw, desc);
// Set config and request to receive the config
OFSetConfig config = (OFSetConfig) factory.getMessage(OFType.SET_CONFIG);
config.setMissSendLength((short) 0xffff).setLengthU(OFSetConfig.MINIMUM_LENGTH);
sw.getOutputStream().write(config);
sw.getOutputStream().write(factory.getMessage(OFType.BARRIER_REQUEST));
sw.getOutputStream().write(factory.getMessage(OFType.GET_CONFIG_REQUEST));
sw.transitionToState(OFSwitchState.GET_CONFIG_REQUEST_SENT);
}
}
break;
case GET_CONFIG_REQUEST_SENT:
if (m.getType() == OFType.GET_CONFIG_REPLY) {
OFGetConfigReply cr = (OFGetConfigReply) m;
if (cr.getMissSendLength() == (short) 0xffff) {
log.debug("Config Reply from {} confirms miss length set to 0xffff", sw);
sw.transitionToState(OFSwitchState.INITIALIZING);
CopyOnWriteArrayList<IOFInitializerListener> initializers =
(CopyOnWriteArrayList<IOFInitializerListener>) initializerList.clone();
// Add all existing initializers to the list
this.initializerMap.put(sw, initializers);
log.debug(
"Remaining initializers for switch {}: {}", sw, this.initializerMap.get(sw));
// Delete all pre-existing flows
if (deletePreExistingFlows) {
OFMatch match = new OFMatch().setWildcards(OFMatch.OFPFW_ALL);
OFMessage fm =
((OFFlowMod)
sw.getInputStream().getMessageFactory().getMessage(OFType.FLOW_MOD))
.setMatch(match)
.setCommand(OFFlowMod.OFPFC_DELETE)
.setOutPort(OFPort.OFPP_NONE)
.setLength(U16.t(OFFlowMod.MINIMUM_LENGTH));
sw.getOutputStream().write(fm);
sw.getOutputStream().write(factory.getMessage(OFType.BARRIER_REQUEST));
}
if (initializers.size() > 0) queueInitializer(sw, initializers.iterator().next());
else advanceInitializers(sw);
} else {
log.error(
"Switch {} refused to set miss send length to 0xffff, disconnecting", sw);
disconnectSwitch(((OFStream) sw.getInputStream()).getKey(), sw);
return;
}
}
break;
case INITIALIZING:
CopyOnWriteArrayList<IOFInitializerListener> initializers = initializerMap.get(sw);
Iterator<IOFInitializerListener> it = initializers.iterator();
if (it.hasNext()) {
IOFInitializerListener listener = it.next();
try {
listener.initializerReceive(sw, m);
} catch (Exception e) {
log.error(
"Error calling initializer listener: {} on switch: {} for message: {}, removing listener",
new Object[] {listener, sw, m});
advanceInitializers(sw);
}
}
break;
case ACTIVE:
List<IOFMessageListener> listeners = messageListeners.get(m.getType());
if (listeners != null) {
for (IOFMessageListener listener : listeners) {
try {
if (listener instanceof IOFSwitchFilter) {
if (!((IOFSwitchFilter) listener).isInterested(sw)) {
continue;
}
}
if (Command.STOP.equals(listener.receive(sw, m))) {
break;
}
} catch (Exception e) {
log.error(
"Failure calling listener ["
+ listener.toString()
+ "] with message ["
+ m.toString()
+ "]",
e);
}
}
} else {
log.debug("Unhandled OF Message: {} from {}", m, sw);
}
break;
} // end switch(sw.getState())
} // end switch(m.getType())
}
}
/**
* Set this OFMatch's parameters based on a comma-separated key=value pair dpctl-style string,
* e.g., from the output of OFMatch.toString() <br>
*
* <p>Supported keys/values include <br>
*
* <p>
*
* <TABLE border=1>
* <TR>
* <TD>KEY(s)
* <TD>VALUE
* </TR>
* <TR>
* <TD>"in_port","input_port"
* <TD>integer
* </TR>
* <TR>
* <TD>"dl_src","eth_src", "dl_dst","eth_dst"
* <TD>hex-string
* </TR>
* <TR>
* <TD>"dl_type", "dl_vlan", "dl_vlan_pcp"
* <TD>integer
* </TR>
* <TR>
* <TD>"nw_src", "nw_dst", "ip_src", "ip_dst"
* <TD>CIDR-style netmask
* </TR>
* <TR>
* <TD>"tp_src","tp_dst"
* <TD>integer (max 64k)
* </TR>
* </TABLE>
*
* <p>The CIDR-style netmasks assume 32 netmask if none given, so: "128.8.128.118/32" is the same
* as "128.8.128.118"
*
* @param match a key=value comma separated string, e.g.
* "in_port=5,ip_dst=192.168.0.0/16,tp_src=80"
* @throws IllegalArgumentException on unexpected key or value
*/
public void fromString(String match) throws IllegalArgumentException {
if (match.equals("")
|| match.equalsIgnoreCase("any")
|| match.equalsIgnoreCase("all")
|| match.equals("[]")) match = "OFMatch[]";
String[] tokens = match.split("[\\[,\\]]");
String[] values;
int initArg = 0;
if (tokens[0].equals("OFMatch")) initArg = 1;
this.wildcards = OFPFW_ALL;
int i;
for (i = initArg; i < tokens.length; i++) {
values = tokens[i].split("=");
if (values.length != 2)
throw new IllegalArgumentException(
"Token " + tokens[i] + " does not have form 'key=value' parsing " + match);
values[0] = values[0].toLowerCase(); // try to make this case insens
if (values[0].equals(STR_IN_PORT) || values[0].equals("input_port")) {
this.inputPort = U16.t(Integer.valueOf(values[1]));
this.wildcards &= ~OFPFW_IN_PORT;
} else if (values[0].equals(STR_DL_DST) || values[0].equals("eth_dst")) {
this.dataLayerDestination = HexString.fromHexString(values[1]);
this.wildcards &= ~OFPFW_DL_DST;
} else if (values[0].equals(STR_DL_SRC) || values[0].equals("eth_src")) {
this.dataLayerSource = HexString.fromHexString(values[1]);
this.wildcards &= ~OFPFW_DL_SRC;
} else if (values[0].equals(STR_DL_TYPE) || values[0].equals("eth_type")) {
if (values[1].startsWith("0x"))
this.dataLayerType = U16.t(Integer.valueOf(values[1].replaceFirst("0x", ""), 16));
else this.dataLayerType = U16.t(Integer.valueOf(values[1]));
this.wildcards &= ~OFPFW_DL_TYPE;
} else if (values[0].equals(STR_DL_VLAN)) {
if (values[1].startsWith("0x"))
this.dataLayerVirtualLan = U16.t(Integer.valueOf(values[1].replaceFirst("0x", ""), 16));
else this.dataLayerVirtualLan = U16.t(Integer.valueOf(values[1]));
this.wildcards &= ~OFPFW_DL_VLAN;
} else if (values[0].equals(STR_DL_VLAN_PCP)) {
if (values[1].startsWith("0x"))
this.dataLayerVirtualLanPriorityCodePoint =
U8.t(Short.valueOf(values[1].replaceFirst("0x", ""), 16));
else this.dataLayerVirtualLanPriorityCodePoint = U8.t(Short.valueOf(values[1]));
this.wildcards &= ~OFPFW_DL_VLAN_PCP;
} else if (values[0].equals(STR_NW_DST) || values[0].equals("ip_dst"))
setFromCIDR(values[1], STR_NW_DST);
else if (values[0].equals(STR_NW_SRC) || values[0].equals("ip_src"))
setFromCIDR(values[1], STR_NW_SRC);
else if (values[0].equals(STR_NW_PROTO)) {
this.networkProtocol = U8.t(Short.valueOf(values[1]));
this.wildcards &= ~OFPFW_NW_PROTO;
} else if (values[0].equals(STR_NW_TOS)) {
this.networkTypeOfService = U8.t(Short.valueOf(values[1]));
this.wildcards &= ~OFPFW_NW_TOS;
} else if (values[0].equals(STR_TP_DST)) {
this.transportDestination = U16.t(Integer.valueOf(values[1]));
this.wildcards &= ~OFPFW_TP_DST;
} else if (values[0].equals(STR_TP_SRC)) {
this.transportSource = U16.t(Integer.valueOf(values[1]));
this.wildcards &= ~OFPFW_TP_SRC;
} else throw new IllegalArgumentException("unknown token " + tokens[i] + " parsing " + match);
}
}
/**
* Set the length of this message, unsigned
*
* @param length
*/
public /*OFMessage*/ SNMPMessage setLengthU(int length) {
this.length = U16.t(length);
return this;
}
/**
* Get the length of this message, unsigned
*
* @return
*/
public int getLengthU() {
return U16.f(length);
}
public OFGroupMod() {
super();
this.type = OFType.GROUP_MOD;
this.length = U16.t(MINIMUM_LENGTH);
}
