func (r *session) OnPortStatus(f openflow.Factory, w trans.Writer, v openflow.PortStatus) error {
r.log.Debug("Session: PORT_STATUS is received")
if !r.negotiated {
return errNotNegotiated
}
port := v.Port()
r.log.Debug(fmt.Sprintf("Session: Device=%v, PortNum=%v, AdminUp=%v, LinkUp=%v", r.device.ID(), port.Number(), !port.IsPortDown(), !port.IsLinkDown()))
r.updatePort(v)
// Send port event
up := !port.IsPortDown() && !port.IsLinkDown()
r.sendPortEvent(port.Number(), up)
// Is this an enabled port?
if up && r.device.isValid() {
// Send LLDP to update network topology
if err := sendLLDP(r.device.ID(), f, w, port); err != nil {
return err
}
} else {
// Send port removed event
p := r.device.Port(port.Number())
if p != nil {
r.watcher.PortRemoved(p)
}
}
return r.handler.OnPortStatus(f, w, v)
}
func (r *session) updatePort(v openflow.PortStatus) {
port := v.Port()
switch v.Version() {
case openflow.OF10_VERSION:
if port.Number() > of10.OFPP_MAX {
return
}
case openflow.OF13_VERSION:
if port.Number() > of13.OFPP_MAX {
return
}
default:
panic("unsupported OpenFlow version")
}
r.device.updatePort(port.Number(), port)
}