Example #1
0
func sendLLDP(deviceID string, f openflow.Factory, w trans.Writer, p openflow.Port) error {
	lldp, err := newLLDPEtherFrame(deviceID, p)
	if err != nil {
		return err
	}

	outPort := openflow.NewOutPort()
	outPort.SetValue(p.Number())

	// Packet out to the port
	action, err := f.NewAction()
	if err != nil {
		return err
	}
	action.SetOutPort(outPort)

	out, err := f.NewPacketOut()
	if err != nil {
		return err
	}
	// From controller
	out.SetInPort(openflow.NewInPort())
	out.SetAction(action)
	out.SetData(lldp)

	return w.Write(out)
}
Example #2
0
func setARPSender(f openflow.Factory, w trans.Writer) error {
	match, err := f.NewMatch()
	if err != nil {
		return err
	}
	match.SetEtherType(0x0806) // ARP

	outPort := openflow.NewOutPort()
	outPort.SetController()

	action, err := f.NewAction()
	if err != nil {
		return err
	}
	action.SetOutPort(outPort)
	inst, err := f.NewInstruction()
	if err != nil {
		return err
	}
	inst.ApplyAction(action)

	flow, err := f.NewFlowMod(openflow.FlowAdd)
	if err != nil {
		return err
	}
	// Permanent flow
	flow.SetIdleTimeout(0)
	flow.SetHardTimeout(0)
	flow.SetPriority(100)
	flow.SetFlowMatch(match)
	flow.SetFlowInstruction(inst)

	if err := w.Write(flow); err != nil {
		return err
	}

	return sendBarrierRequest(f, w)
}
Example #3
0
func (r *of13Session) setDefaultTableMiss(f openflow.Factory, w trans.Writer) error {
	inst, err := f.NewInstruction()
	if err != nil {
		return err
	}

	// 0 -> Controller
	outPort := openflow.NewOutPort()
	outPort.SetController()
	action, err := f.NewAction()
	if err != nil {
		return err
	}
	action.SetOutPort(outPort)

	inst.ApplyAction(action)
	if err := r.setTableMiss(f, w, 0, inst); err != nil {
		return fmt.Errorf("failed to set table_miss flow entry: %v", err)
	}
	r.device.setFlowTableID(0)

	return nil
}
Example #4
0
func (r *of13Session) setHP2920TableMiss(f openflow.Factory, w trans.Writer) error {
	// Table-100 is a hardware table, and Table-200 is a software table
	// that has very low performance.
	inst, err := f.NewInstruction()
	if err != nil {
		return err
	}

	// 0 -> 100
	inst.GotoTable(100)
	if err := r.setTableMiss(f, w, 0, inst); err != nil {
		return fmt.Errorf("failed to set table_miss flow entry: %v", err)
	}
	// 100 -> 200
	inst.GotoTable(200)
	if err := r.setTableMiss(f, w, 100, inst); err != nil {
		return fmt.Errorf("failed to set table_miss flow entry: %v", err)
	}

	// 200 -> Controller
	outPort := openflow.NewOutPort()
	outPort.SetController()
	action, err := f.NewAction()
	if err != nil {
		return err
	}
	action.SetOutPort(outPort)

	inst.ApplyAction(action)
	if err := r.setTableMiss(f, w, 200, inst); err != nil {
		return fmt.Errorf("failed to set table_miss flow entry: %v", err)
	}
	r.device.setFlowTableID(200)

	return nil
}