Appends a new qdisc and associated information to the setting.
The given qdisc is duplicated internally and is not changed by this function. If an identical qdisc (considering attributes as well) already exists, the qdisc is not added and the function returns false.
this |
the SettingTCConfig |
qdisc |
the qdisc to add |
true if the qdisc was added; false if the qdisc was already known. |