[PATCH wireless v3 0/3] wifi: mt76: clear cipher state on key removal for WED offload

[Joshua Klinesmith <joshuaklinesmith@gmail.com>]

Clear stale BSS cipher on group key removal so WED-offloaded
plaintext traffic is not dropped after switching from encrypted
to open/no-encryption mode.

Changes since v2:
- New patch 1/3: initialize hw_key_idx2 to -1 in mt76_wcid_init()
  for consistent "no key" sentinel on both key index slots.
- Guard cipher clearing on both hw_key_idx == (u8)-1 AND
  hw_key_idx2 == (u8)-1, so that GTK rotation (new key installed
  before old removed) and BIGTK removal while another group key
  is active do not trigger a premature zero-cipher BSS update.

Changes since v1:
- Rebased on current wireless tree.

Joshua Klinesmith (3):
  wifi: mt76: initialize hw_key_idx2 in mt76_wcid_init
  wifi: mt76: mt7915: clear cipher state on key removal for WED offload
  wifi: mt76: mt7996: clear cipher state on key removal for WED offload

 drivers/net/wireless/mediatek/mt76/mac80211.c |  1 +
 .../net/wireless/mediatek/mt76/mt7915/main.c  | 13 +++++++++++
 .../net/wireless/mediatek/mt76/mt7996/main.c  | 23 ++++++++++++++++---
 3 files changed, 34 insertions(+), 3 deletions(-)

-- 
2.43.0