/**
* Write a drop flow for the given ethertype at the given priority. If the ethertype is null, then
* drop all traffic
*/
public Flow dropFlow(Integer priority, Long etherType, Short tableId) {
FlowId flowid;
FlowBuilder flowb = base().setPriority(priority).setInstructions(FlowUtils.dropInstructions());
if (etherType != null) {
MatchBuilder mb =
new MatchBuilder().setEthernetMatch(FlowUtils.ethernetMatch(null, null, etherType));
Match match = mb.build();
flowid = FlowIdUtils.newFlowId(tableId, "drop", match);
flowb.setMatch(match);
} else {
flowid = FlowIdUtils.newFlowId("dropAll");
}
flowb.setId(flowid);
return flowb.build();
}
