libbsd: React to link status change events

[Jan.Sommer at dlr.de]

Hello,

is there an easy way to register a callback function or block until a link status change of an Ethernet device occurs in the libbsd stack?
Searching for it, I found some references for EV_NETDEV in kqueue, but this seems to be a legacy function which has been removed years ago.

In the console of the Zedboard, for example, I see those events as info statements, but haven't found an API to hook into that:

info: lo0: link state changed to UP
info: cgem0: link state changed to DOWN
info: cgem0: link state changed to UP

Best regards,

    Jan


Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)
German Aerospace Center
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