示例#1
0
func (d *of10Driver) handlePkt(pkt of.Header, c *ofConn) error {
	pkt10, err := of10.ToHeader10(pkt)
	if err != nil {
		return err
	}

	switch {
	case of10.IsEchoRequest(pkt10):
		return d.handleEchoRequest(of10.NewEchoRequestWithBuf(pkt10.Buf), c)
	case of10.IsFeaturesReply(pkt10):
		return d.handleFeaturesReply(of10.NewFeaturesReplyWithBuf(pkt10.Buf), c)
	case of10.IsPacketIn(pkt10):
		return d.handlePacketIn(of10.NewPacketInWithBuf(pkt10.Buf), c)
	case of10.IsErrorMsg(pkt10):
		return d.handleErrorMsg(of10.NewErrorMsgWithBuf(pkt10.Buf), c)
	case of10.IsStatsReply(pkt10):
		return d.handleStatsReply(of10.NewStatsReplyWithBuf(pkt10.Buf), c)
	default:
		return fmt.Errorf("Received unsupported packet: %v", pkt.Type())
	}
}
示例#2
0
func (d *of10Driver) handshake(c *ofConn) error {
	freq := of10.NewFeaturesRequest()
	if err := c.WriteHeader(freq.Header); err != nil {
		return err
	}

	c.Flush()

	glog.V(2).Info("%v sent features request to the switch", c.ctx)

	hdr, err := c.ReadHeader()
	if err != nil {
		return err
	}

	v10, err := of10.ToHeader10(hdr)
	if err != nil {
		return err
	}

	frep, err := of10.ToFeaturesReply(v10)
	if err != nil {
		return err
	}

	glog.Infof("%v completes handshaking with switch %016x", c.ctx,
		frep.DatapathId())
	glog.Infof("%v disables packet buffers in switch %016x", c.ctx,
		frep.DatapathId())
	cfg := of10.NewSwitchSetConfig()
	cfg.SetMissSendLen(0xFFFF)
	c.WriteHeader(cfg.Header)

	nodeID := datapathIDToNodeID(frep.DatapathId())
	c.node = nom.Node{
		ID:           nodeID,
		MACAddr:      datapathIDToMACAddr(frep.DatapathId()),
		Capabilities: nil,
	}
	glog.Infof("%v is connected to %v", c.ctx, c.node)

	nomDriver := nom.Driver{
		BeeID: c.ctx.ID(),
		Role:  nom.DriverRoleDefault,
	}

	c.ctx.Emit(nom.NodeConnected{
		Node:   c.node,
		Driver: nomDriver,
	})

	d.ofPorts = make(map[uint16]*nom.Port)
	d.nomPorts = make(map[nom.UID]uint16)
	for _, p := range frep.Ports() {
		name := p.Name()
		port := nom.Port{
			ID:      portNoToPortID(uint32(p.PortNo())),
			Name:    string(name[:]),
			MACAddr: p.HwAddr(),
			Node:    c.NodeUID(),
		}
		d.ofPorts[p.PortNo()] = &port
		d.nomPorts[port.UID()] = p.PortNo()
		glog.Infof("%v added", port)
		if p.PortNo() <= uint16(of10.PP_MAX) {
			c.ctx.Emit(nom.PortStatusChanged{
				Port:   port,
				Driver: nomDriver,
			})
		}
	}
	return nil
}