func (pipe Pipeline) addFlowEntry(req ofp4.FlowMod) error {
tableId := req.TableId()
if tableId > ofp4.OFPTT_MAX {
return ofp4.MakeErrorMsg(
ofp4.OFPET_FLOW_MOD_FAILED,
ofp4.OFPFMFC_BAD_TABLE_ID,
)
}
pipe.lock.Lock()
defer pipe.lock.Unlock()
var table *flowTable
if trial, ok := pipe.flows[tableId]; ok {
table = trial
} else {
table = &flowTable{
lock: &sync.RWMutex{},
feature: makeFlowTableFeature(),
}
pipe.flows[tableId] = table
}
return table.addFlowEntry(req, pipe)
}
