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())
}
}
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
}