Hi All,
I just look at the code of arp proxy and I have some question about it
If mininet works in openflow 1.3 mode, arp packets are sended to controller. But I haven’t see any flowrule to introduce mininet to do like that except some table-miss entry
If I install any other flow rule on table 0, just like host to host intent, may be it won’t match table miss, and arp proxy wont work. Is that situation will happened?
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();
write(tableMissEntry);
}
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