Backport patch that fixes memory disclosure in packet padding.
The downstream driver supports statistics, so when a packet
cannot be padded the statistics of dropped packets are incremented.
The other patches do not introduce any functional changes.
Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
Link: https://github.com/openwrt/openwrt/pull/16563
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
