func receiveEvent(msg *bpf.PerfEventSample, cpu int) {
prefix := fmt.Sprintf("CPU %02d:", cpu)
data := msg.DataDirect()
if data[0] == bpf.CILIUM_NOTIFY_DROP {
dn := bpf.DropNotify{}
if err := binary.Read(bytes.NewReader(data), binary.LittleEndian, &dn); err != nil {
log.Warningf("Error while parsing drop notification message: %s\n", err)
}
dn.Dump(dissect, data, prefix)
} else if data[0] == bpf.CILIUM_DBG_MSG {
dm := bpf.DebugMsg{}
if err := binary.Read(bytes.NewReader(data), binary.LittleEndian, &dm); err != nil {
log.Warningf("Error while parsing debug message: %s\n", err)
} else {
dm.Dump(data, prefix)
}
} else if data[0] == bpf.CILIUM_DBG_CAPTURE {
dc := bpf.DebugCapture{}
if err := binary.Read(bytes.NewReader(data), binary.LittleEndian, &dc); err != nil {
log.Warningf("Error while parsing debug capture message: %s\n", err)
}
dc.Dump(dissect, data, prefix)
} else {
fmt.Printf("%s Unknonwn event: %+v\n", prefix, msg)
}
}
func (d *Daemon) receiveEvent(msg *bpf.PerfEventSample, cpu int) {
data := msg.DataDirect()
if data[0] == bpf.CILIUM_NOTIFY_DROP {
dn := bpf.DropNotify{}
if err := binary.Read(bytes.NewReader(data), binary.LittleEndian, &dn); err != nil {
log.Warningf("Error while parsing drop notification message: %s\n", err)
return
}
d.endpointsLearningMU.RLock()
for _, v := range d.endpointsLearning {
if dn.DstID == uint32(v.EndpointID) {
go func(epID uint16, lblID uint32) {
sec, err := d.GetLabels(lblID)
if err != nil {
log.Errorf("Error while getting label ID %d: %s", lblID, err)
return
}
if sec == nil {
log.Warningf("Endpoint %d is receiving traffic from an unknown label ID %d", epID, lblID)
return
}
if err := d.EndpointLabelsUpdate(epID, labels.LabelOp{labels.AddLabelsOp: sec.Labels}); err != nil {
log.Warningf("Error while add learned labels into the daemon %s", err)
}
}(v.EndpointID, dn.SrcLabel)
}
}
d.endpointsLearningMU.RUnlock()
}
}