RE: [PATCH v11 4/7] wifi: rtw88: sdio: zero the padding added to a TX transfer

Luka Gejak [off-list ref] wrote:

mac80211 reserves IEEE80211_ENCRYPT_TAILROOM, 18 bytes, and offers
no way for a driver to ask for more on TX; extra_tx_headroom is headroom
and extra_beacon_tailroom is beacons only.

You can modify mac80211 to reserve larger ndev->needed_tailroom to 
see if it can really resolve the symptom. If so, you can propose
to add fields for tailroom like headroom:

  struct ieee80211_hw:: extra_tx_tailroom
  struct ieee80211_local:: tx_headroom

Ping-Ke