wifi: cfg80211: factor out bridge tunnel / RFC1042 header check

The same check is done in multiple places, unify it.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230213100855.34315-2-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Felix Fietkau 2023-02-13 11:08:52 +01:00 • committed by Johannes Berg
commit 9f718554e7