private OFAction buildL2Modification(Instruction i) {
L2ModificationInstruction l2m = (L2ModificationInstruction) i;
ModEtherInstruction eth;
OFOxm<?> oxm = null;
switch (l2m.subtype()) {
case ETH_DST:
eth = (ModEtherInstruction) l2m;
oxm = factory().oxms().ethDst(MacAddress.of(eth.mac().toLong()));
break;
case ETH_SRC:
eth = (ModEtherInstruction) l2m;
oxm = factory().oxms().ethSrc(MacAddress.of(eth.mac().toLong()));
break;
case VLAN_ID:
ModVlanIdInstruction vlanId = (ModVlanIdInstruction) l2m;
oxm = factory().oxms().vlanVid(OFVlanVidMatch.ofVlan(vlanId.vlanId().toShort()));
break;
case VLAN_PCP:
ModVlanPcpInstruction vlanPcp = (ModVlanPcpInstruction) l2m;
oxm = factory().oxms().vlanPcp(VlanPcp.of(vlanPcp.vlanPcp()));
break;
case MPLS_PUSH:
PushHeaderInstructions pushHeaderInstructions = (PushHeaderInstructions) l2m;
return factory()
.actions()
.pushMpls(EthType.of(pushHeaderInstructions.ethernetType().toShort()));
case MPLS_POP:
PushHeaderInstructions popHeaderInstructions = (PushHeaderInstructions) l2m;
return factory()
.actions()
.popMpls(EthType.of(popHeaderInstructions.ethernetType().toShort()));
case MPLS_LABEL:
ModMplsLabelInstruction mplsLabel = (ModMplsLabelInstruction) l2m;
oxm = factory().oxms().mplsLabel(U32.of(mplsLabel.label().longValue()));
break;
case DEC_MPLS_TTL:
return factory().actions().decMplsTtl();
case VLAN_POP:
return factory().actions().popVlan();
case VLAN_PUSH:
PushHeaderInstructions pushVlanInstruction = (PushHeaderInstructions) l2m;
return factory()
.actions()
.pushVlan(EthType.of(pushVlanInstruction.ethernetType().toShort()));
default:
log.warn("Unimplemented action type {}.", l2m.subtype());
break;
}
if (oxm != null) {
return factory().actions().buildSetField().setField(oxm).build();
}
return null;
}
@Override
public void forward(ForwardingObjective fwd) {
if (checkForMulticast(fwd)) {
processMulticastRule(fwd);
return;
}
TrafficTreatment treatment = fwd.treatment();
List<Instruction> instructions = treatment.allInstructions();
Optional<Instruction> vlanIntruction =
instructions
.stream()
.filter(i -> i.type() == Instruction.Type.L2MODIFICATION)
.filter(
i ->
((L2ModificationInstruction) i).subtype()
== L2ModificationInstruction.L2SubType.VLAN_PUSH
|| ((L2ModificationInstruction) i).subtype()
== L2ModificationInstruction.L2SubType.VLAN_POP)
.findAny();
if (!vlanIntruction.isPresent()) {
fail(fwd, ObjectiveError.BADPARAMS);
return;
}
L2ModificationInstruction vlanIns = (L2ModificationInstruction) vlanIntruction.get();
if (vlanIns.subtype() == L2ModificationInstruction.L2SubType.VLAN_PUSH) {
installUpstreamRules(fwd);
} else if (vlanIns.subtype() == L2ModificationInstruction.L2SubType.VLAN_POP) {
installDownstreamRules(fwd);
} else {
log.error("Unknown OLT operation: {}", fwd);
fail(fwd, ObjectiveError.UNSUPPORTED);
return;
}
pass(fwd);
}
