import org.projectfloodlight.openflow.protocol.OFFlowDeleteStrict; //导入依赖的package包/类
@Override
public OFFlowMod buildFlowDel() {
    Match match = buildMatch();

    long cookie = flowRule().id().value();

    OFFlowDeleteStrict fm = factory().buildFlowDeleteStrict()
            .setXid(xid)
            .setCookie(U64.of(cookie))
            .setBufferId(OFBufferId.NO_BUFFER)
            .setMatch(match)
            .setFlags(Collections.singleton(OFFlowModFlags.SEND_FLOW_REM))
            .setPriority(flowRule().priority())
            .setTableId(TableId.of(flowRule().tableId()))
            .build();

    return fm;
}
 

import org.projectfloodlight.openflow.protocol.OFFlowDeleteStrict; //导入依赖的package包/类
@Override
public OFFlowMod buildFlowDel() {
    Match match = buildMatch();

    long cookie = flowRule().id().value();

    OFFlowDeleteStrict.Builder fm = factory().buildFlowDeleteStrict()
            .setXid(xid)
            .setCookie(U64.of(cookie))
            .setBufferId(OFBufferId.NO_BUFFER)
            .setMatch(match)
            .setFlags(Collections.singleton(OFFlowModFlags.SEND_FLOW_REM))
            .setPriority(flowRule().priority())
            .setTableId(TableId.of(flowRule().tableId()));

    if (flowRule().timeout() != 0) {
        fm.setIdleTimeout(flowRule().timeout());
    } else {
        fm.setHardTimeout(flowRule().hardTimeout());
    }

    return fm.build();
}
 

import org.projectfloodlight.openflow.protocol.OFFlowDeleteStrict; //导入依赖的package包/类
@Override
public OFFlowMod buildFlowDel() {
    Match match = buildMatch();

    long cookie = flowRule().id().value();

    OFFlowDeleteStrict fm = factory().buildFlowDeleteStrict()
            .setXid(xid)
            .setCookie(U64.of(cookie))
            .setBufferId(OFBufferId.NO_BUFFER)
            .setMatch(match)
            .setFlags(Collections.singleton(OFFlowModFlags.SEND_FLOW_REM))
            .setPriority(flowRule().priority())
            .setTableId(TableId.of(flowRule().tableId()))
            .setHardTimeout(flowRule().hardTimeout())
            .build();

    return fm;
}
 

import org.projectfloodlight.openflow.protocol.OFFlowDeleteStrict; //导入依赖的package包/类
private void deleteStaticFlowEntry(String entryName) {
	String dpid = entry2dpid.remove(entryName);

	if (dpid == null) {
		// assume state has been cleared by deleteFlowsForSwitch() or
		// deleteAllFlows()
		return;
	}

	if (log.isDebugEnabled()) {
		log.debug("Sending delete flow mod for flow {} for switch {}", entryName, dpid);
	}

	// send flow_mod delete
	if (switchService.getSwitch(DatapathId.of(dpid)) != null) {
		OFFlowDeleteStrict flowMod = FlowModUtils.toFlowDeleteStrict(entriesFromStorage.get(dpid).get(entryName));

		if (entriesFromStorage.containsKey(dpid) && entriesFromStorage.get(dpid).containsKey(entryName)) {
			entriesFromStorage.get(dpid).remove(entryName);
		} else {
			log.debug("Tried to delete non-existent entry {} for switch {}", entryName, dpid);
			return;
		}

		writeFlowModToSwitch(DatapathId.of(dpid), flowMod);
	} else {
		log.debug("Not sending flow delete for disconnected switch.");
	}
	return;
}
 

import org.projectfloodlight.openflow.protocol.OFFlowDeleteStrict; //导入依赖的package包/类
public static OFFlowDeleteStrict toFlowDeleteStrict(OFFlowMod fm) {
	OFVersion version = fm.getVersion();
	OFFlowDeleteStrict.Builder b = OFFactories.getFactory(version).buildFlowDeleteStrict();
	if (b.getVersion().compareTo(OFVersion.OF_10) == 0) {
		return b.setActions(fm.getActions())
				.setBufferId(fm.getBufferId())
				.setCookie(fm.getCookie())
				// cookie-mask not supported
				.setFlags(fm.getFlags())
				.setHardTimeout(fm.getHardTimeout())
				.setIdleTimeout(fm.getIdleTimeout())
				// instructions not supported
				.setMatch(fm.getMatch())
				// out-group not supported
				.setOutPort(fm.getOutPort())
				.setPriority(fm.getPriority())
				// table-id not supported
				.setXid(fm.getXid())
				.build();
	} else {
		return b.setActions(fm.getActions())
				.setBufferId(fm.getBufferId())
				.setCookie(fm.getCookie())
				.setCookieMask(fm.getCookieMask()) // added in OF1.1
				.setFlags(fm.getFlags())
				.setHardTimeout(fm.getHardTimeout())
				.setIdleTimeout(fm.getIdleTimeout())
				.setInstructions(fm.getInstructions()) // added in OF1.1
				.setMatch(fm.getMatch())
				.setOutGroup(fm.getOutGroup()) // added in OF1.1
				.setOutPort(fm.getOutPort())
				.setPriority(fm.getPriority())
				.setTableId(fm.getTableId())
				.setXid(fm.getXid())
				.build();
	}
}
 

import org.projectfloodlight.openflow.protocol.OFFlowDeleteStrict; //导入依赖的package包/类
@LogMessageDoc(level="ERROR",
		message="inconsistent internal state: no switch has rule {rule}",
		explanation="Inconsistent internat state discovered while " +
				"deleting a static flow rule",
				recommendation=LogMessageDoc.REPORT_CONTROLLER_BUG)
private void deleteStaticFlowEntry(String entryName) {
	String dpid = entry2dpid.remove(entryName);

	if (dpid == null) {
		// assume state has been cleared by deleteFlowsForSwitch() or
		// deleteAllFlows()
		return;
	}

	if (log.isDebugEnabled()) {
		log.debug("Sending delete flow mod for flow {} for switch {}", entryName, dpid);
	}

	// send flow_mod delete
	OFFlowDeleteStrict flowMod = FlowModUtils.toFlowDeleteStrict(entriesFromStorage.get(dpid).get(entryName));

	if (entriesFromStorage.containsKey(dpid) && entriesFromStorage.get(dpid).containsKey(entryName)) {
		entriesFromStorage.get(dpid).remove(entryName);
	} else {
		log.debug("Tried to delete non-existent entry {} for switch {}", entryName, dpid);
		return;
	}

	writeFlowModToSwitch(DatapathId.of(dpid), flowMod);
	return;
}
 

import org.projectfloodlight.openflow.protocol.OFFlowDeleteStrict; //导入依赖的package包/类
/** 
 * Adds an initial table-miss flow to each
 * and every table on the switch. This replaces the default behavior of
 * forwarding table-miss packets to the controller. The table-miss flows
 * inserted will forward all packets that do not match a flow to the 
 * controller for processing.
 * 
 * Adding the default flow only applies to OpenFlow 1.3+ switches, which 
 * remove the default forward-to-controller behavior of flow tables.
 */
private void addDefaultFlows() {
	/*
	 * Only for OF1.3+, insert the default forward-to-controller flow for
	 * each table. This is priority=0 with no Match.
	 */
	if (this.sw.getOFFactory().getVersion().compareTo(OFVersion.OF_13) >= 0) {
		/*
		 * Remove the default flow if it's present.
		 */
		OFFlowDeleteStrict deleteFlow = this.factory.buildFlowDeleteStrict()
				.setTableId(TableId.ALL)
				.setOutPort(OFPort.CONTROLLER)
				.build();
		this.sw.write(deleteFlow);
					
		ArrayList<OFAction> actions = new ArrayList<OFAction>(1);
		actions.add(factory.actions().output(OFPort.CONTROLLER, 0xffFFffFF));
		ArrayList<OFMessage> flows = new ArrayList<OFMessage>();
		for (int tableId = 0; tableId < this.sw.getTables(); tableId++) {
			OFFlowAdd defaultFlow = this.factory.buildFlowAdd()
					.setTableId(TableId.of(tableId))
					.setPriority(0)
					.setActions(actions)
					.build();
			flows.add(defaultFlow);
		}
		this.sw.write(flows);
	}
}
 

import org.projectfloodlight.openflow.protocol.OFFlowDeleteStrict; //导入依赖的package包/类
/** 
 * Adds an initial table-miss flow to tables on the switch. 
 * This replaces the default behavior of forwarding table-miss packets 
 * to the controller. The table-miss flows inserted will forward all 
 * packets that do not match a flow to the controller for processing.
 * 
 * The OFSwitchManager is checked for used-defined behavior and default
 * max table to try to use.
 * 
 * Adding the default flow only applies to OpenFlow 1.3+ switches, which 
 * remove the default forward-to-controller behavior of flow tables.
 */
private void addDefaultFlows() {
	/*
	 * Only for OF1.3+, insert the default forward-to-controller flow for
	 * each table. This is priority=0 with no Match.
	 */
	if (this.sw.getOFFactory().getVersion().compareTo(OFVersion.OF_13) >= 0) {
		/*
		 * Remove the default flow if it's present.
		 */
		OFFlowDeleteStrict deleteFlow = this.factory.buildFlowDeleteStrict()
				.setTableId(TableId.ALL)
				.setOutPort(OFPort.CONTROLLER)
				.build();
		this.sw.write(deleteFlow);
					
		ArrayList<OFAction> actions = new ArrayList<OFAction>(1);
		actions.add(factory.actions().output(OFPort.CONTROLLER, 0xffFFffFF));
		ArrayList<OFMessage> flows = new ArrayList<OFMessage>();
		for (int tableId = 0; tableId <= this.sw.getMaxTableForTableMissFlow().getValue(); tableId++) {
			OFFlowAdd defaultFlow = this.factory.buildFlowAdd()
					.setTableId(TableId.of(tableId))
					.setPriority(0)
					.setActions(actions)
					.build();
			flows.add(defaultFlow);
		}
		this.sw.write(flows);
	}
}
 

import org.projectfloodlight.openflow.protocol.OFFlowDeleteStrict; //导入依赖的package包/类
/** 
 * Adds an initial table-miss flow to each
 * and every table on the switch. This replaces the default behavior of
 * forwarding table-miss packets to the controller. The table-miss flows
 * inserted will forward all packets that do not match a flow to the 
 * controller for processing.
 * 
 * Adding the default flow only applies to OpenFlow 1.3+ switches, which 
 * remove the default forward-to-controller behavior of flow tables.
 * 
 * 下发table-miss
 */
private void addDefaultFlows() {
	/*
	 * Only for OF1.3+, insert the default forward-to-controller flow for
	 * each table. This is priority=0 with no Match.
	 */
	if (this.sw.getOFFactory().getVersion().compareTo(OFVersion.OF_13) >= 0) {
		/*
		 * Remove the default flow if it's present.
		 */
		OFFlowDeleteStrict deleteFlow = this.factory.buildFlowDeleteStrict()
				.setTableId(TableId.ALL)
				.setOutPort(OFPort.CONTROLLER)
				.build();
		this.sw.write(deleteFlow);
					
		ArrayList<OFAction> actions = new ArrayList<OFAction>(1);
		actions.add(factory.actions().output(OFPort.CONTROLLER, 0xffFFffFF));
		ArrayList<OFMessage> flows = new ArrayList<OFMessage>();
		for (int tableId = 0; tableId < this.sw.getTables(); tableId++) {
			OFFlowAdd defaultFlow = this.factory.buildFlowAdd()
					.setTableId(TableId.of(tableId))
					.setPriority(0)
					.setActions(actions)
					.build();
			flows.add(defaultFlow);
		}
		this.sw.write(flows);
	}
}