func (d *of12Driver) handlePkt(pkt of.Header, c *ofConn) error {
pkt12, err := of12.ToHeader12(pkt)
if err != nil {
return err
}
switch {
case of12.IsEchoRequest(pkt12):
return d.handleEchoRequest(of12.NewEchoRequestWithBuf(pkt12.Buf), c)
case of12.IsFeaturesReply(pkt12):
return d.handleFeaturesReply(of12.NewFeaturesReplyWithBuf(pkt12.Buf), c)
case of12.IsPacketIn(pkt12):
return d.handlePacketIn(of12.NewPacketInWithBuf(pkt12.Buf), c)
case of12.IsErrorMsg(pkt12):
return d.handleErrorMsg(of12.NewErrorMsgWithBuf(pkt12.Buf), c)
case of12.IsStatsReply(pkt12):
return d.handleStatsReply(of12.NewStatsReplyWithBuf(pkt12.Buf), c)
case of12.IsRoleReply(pkt12):
return d.handleRoleReply(of12.NewRoleReplyWithBuf(pkt12.Buf), c)
default:
return fmt.Errorf("received unsupported packet: %v", pkt.Type())
}
}
func (d *of12Driver) handshake(c *ofConn) error {
freq := of12.NewFeaturesRequest()
if err := c.WriteHeader(freq.Header); err != nil {
return err
}
c.Flush()
glog.V(2).Info("Sent features request to the switch")
hdr, err := c.ReadHeader()
if err != nil {
return err
}
v12, err := of12.ToHeader12(hdr)
if err != nil {
return err
}
frep, err := of12.ToFeaturesReply(v12)
if err != nil {
return err
}
glog.Infof("Handshake completed for switch %016x", frep.DatapathId())
glog.Infof("Disabling packet buffers in the switch.")
cfg := of12.NewSwitchSetConfig()
cfg.SetMissSendLen(0xFFFF)
c.WriteHeader(cfg.Header)
nodeID := datapathIDToNodeID(frep.DatapathId())
c.node = nom.Node{
ID: nodeID,
MACAddr: datapathIDToMACAddr(frep.DatapathId()),
Capabilities: []nom.NodeCapability{
nom.CapDriverRole,
},
}
nomDriver := nom.Driver{
BeeID: c.ctx.ID(),
Role: nom.DriverRoleDefault,
}
c.ctx.Emit(nom.NodeConnected{
Node: c.node,
Driver: nomDriver,
})
d.ofPorts = make(map[uint32]*nom.Port)
d.nomPorts = make(map[nom.UID]uint32)
for _, p := range frep.Ports() {
if p.PortNo() > uint32(of12.PP_MAX) {
continue
}
name := p.Name()
port := nom.Port{
ID: portNoToPortID(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)
c.ctx.Emit(nom.PortStatusChanged{
Port: port,
Driver: nomDriver,
})
}
return nil
}