8d46c25d23
When creating fragment frames, the header length should honour the DATAPAD flag. This fixes the fragments that are queued to the ath(4) driver but it doesn't yet fix fragment transmission. That requires further changes to the ath(4) transmit path. Well, strictly speaking, it requires further changes to _all_ wifi driver transmit paths, but this is at least a start. Tested: * AR5416, STA mode, w/ fragthreshold set to 256.