batman-adv: tt: look up wifi state of incoming interface in helper

batadv_tt_local_add() only needs to know whether the client was seen on a
wifi interface. But it kept the net_device reference of the incoming
interface alive until its own cleanup section, together with a "net" and an
"in_dev" variable which are of no interest to the rest of the function.

Move the lookup to a small helper which acquires and releases the
net_device reference itself.

Signed-off-by: Sven Eckelmann <sven@narfation.org>

0 files changed, 0 insertions, 0 deletions