alshabib

table miss entry for ovs in of1.3 mode

package org.onlab.onos.of.drivers.impl;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.concurrent.atomic.AtomicBoolean;
......@@ -12,7 +14,14 @@ import org.onlab.onos.of.controller.driver.SwitchDriverSubHandshakeNotStarted;
import org.projectfloodlight.openflow.protocol.OFBarrierRequest;
import org.projectfloodlight.openflow.protocol.OFDescStatsReply;
import org.projectfloodlight.openflow.protocol.OFFactory;
import org.projectfloodlight.openflow.protocol.OFMatchV3;
import org.projectfloodlight.openflow.protocol.OFMessage;
import org.projectfloodlight.openflow.protocol.OFOxmList;
import org.projectfloodlight.openflow.protocol.action.OFAction;
import org.projectfloodlight.openflow.protocol.instruction.OFInstruction;
import org.projectfloodlight.openflow.types.OFBufferId;
import org.projectfloodlight.openflow.types.OFPort;
import org.projectfloodlight.openflow.types.TableId;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
......@@ -30,6 +39,9 @@ public class OFSwitchImplOVS13 extends AbstractOpenFlowSwitch {
private OFFactory factory;
private long barrierXidToWaitFor = -1;
private static final short MIN_PRIORITY = 0x0;
private static final int OFPCML_NO_BUFFER = 0xffff;
public OFSwitchImplOVS13(Dpid dpid, OFDescStatsReply desc) {
super(dpid);
driverHandshakeComplete = new AtomicBoolean(false);
......@@ -113,6 +125,7 @@ public class OFSwitchImplOVS13 extends AbstractOpenFlowSwitch {
private void configureSwitch() {
populateTableMissEntry(0, true, false, false, 0);
sendBarrier(true);
}
......@@ -144,4 +157,79 @@ public class OFSwitchImplOVS13 extends AbstractOpenFlowSwitch {
public void write(List<OFMessage> msgs) {
channel.write(msgs);
}
/**
* By default if none of the booleans in the call are set, then the
* table-miss entry is added with no instructions, which means that pipeline
* execution will stop, and the action set associated with the packet will
* be executed.
*
* @param tableToAdd
* @param toControllerNow as an APPLY_ACTION instruction
* @param toControllerWrite as a WRITE_ACITION instruction
* @param toTable as a GOTO_TABLE instruction
* @param tableToSend
* @throws IOException
*/
@SuppressWarnings("unchecked")
private void populateTableMissEntry(int tableToAdd, boolean toControllerNow,
boolean toControllerWrite,
boolean toTable, int tableToSend) {
OFOxmList oxmList = OFOxmList.EMPTY;
OFMatchV3 match = factory.buildMatchV3()
.setOxmList(oxmList)
.build();
OFAction outc = factory.actions()
.buildOutput()
.setPort(OFPort.CONTROLLER)
.setMaxLen(OFPCML_NO_BUFFER)
.build();
List<OFInstruction> instructions = new ArrayList<OFInstruction>();
if (toControllerNow) {
// table-miss instruction to send to controller immediately
OFInstruction instr = factory.instructions()
.buildApplyActions()
.setActions(Collections.singletonList(outc))
.build();
instructions.add(instr);
}
if (toControllerWrite) {
// table-miss instruction to write-action to send to controller
// this will be executed whenever the action-set gets executed
OFInstruction instr = factory.instructions()
.buildWriteActions()
.setActions(Collections.singletonList(outc))
.build();
instructions.add(instr);
}
if (toTable) {
// table-miss instruction to goto-table x
OFInstruction instr = factory.instructions()
.gotoTable(TableId.of(tableToSend));
instructions.add(instr);
}
if (!toControllerNow && !toControllerWrite && !toTable) {
// table-miss has no instruction - at which point action-set will be
// executed - if there is an action to output/group in the action
// set
// the packet will be sent there, otherwise it will be dropped.
instructions = Collections.EMPTY_LIST;
}
OFMessage tableMissEntry = factory.buildFlowAdd()
.setTableId(TableId.of(tableToAdd))
.setMatch(match) // match everything
.setInstructions(instructions)
.setPriority(MIN_PRIORITY)
.setBufferId(OFBufferId.NO_BUFFER)
.setIdleTimeout(0)
.setHardTimeout(0)
.setXid(getNextTransactionId())
.build();
sendMsg(tableMissEntry);
}
}
......