From: Tzu-En Huang <tehuang@xxxxxxxxxxx>
Add support for NL80211_EXT_FEATURE_CAN_REPLACE_PTK0 feature.
According to the "Hardware crypto acceleration" documentation section,
when set_key() is called with %DISABLE_KEY command, for outgoing frames,
we flush out frames in the queues with the old key; for incoming frames,
no frames will be passed to mac80211 decrypted with the old key due to
rtw_sec_clear_cam().
Signed-off-by: Tzu-En Huang <tehuang@xxxxxxxxxxx>
Signed-off-by: Yan-Hsuan Chuang <yhchuang@xxxxxxxxxxx>
---
drivers/net/wireless/realtek/rtw88/mac.h | 5 +++++
drivers/net/wireless/realtek/rtw88/mac80211.c | 1 +
drivers/net/wireless/realtek/rtw88/main.c | 2 ++
3 files changed, 8 insertions(+)
diff --git a/drivers/net/wireless/realtek/rtw88/mac.h b/drivers/net/wireless/realtek/rtw88/mac.h
index a67fa82973e4..592dc830160c 100644
--- a/drivers/net/wireless/realtek/rtw88/mac.h
+++ b/drivers/net/wireless/realtek/rtw88/mac.h
@@ -33,4 +33,9 @@ int rtw_download_firmware(struct rtw_dev *rtwdev, struct rtw_fw_state *fw);
int rtw_mac_init(struct rtw_dev *rtwdev);
void rtw_mac_flush_queues(struct rtw_dev *rtwdev, u32 queues, bool drop);
+static inline void rtw_mac_flush_all_queues(struct rtw_dev *rtwdev, bool drop)
+{
+ rtw_mac_flush_queues(rtwdev, BIT(rtwdev->hw->queues) - 1, drop);
+}
+
#endif
diff --git a/drivers/net/wireless/realtek/rtw88/mac80211.c b/drivers/net/wireless/realtek/rtw88/mac80211.c
index 3e4f2f27ced2..2247bd61e716 100644
--- a/drivers/net/wireless/realtek/rtw88/mac80211.c
+++ b/drivers/net/wireless/realtek/rtw88/mac80211.c
@@ -546,6 +546,7 @@ static int rtw_ops_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
hw_key_type, hw_key_idx);
break;
case DISABLE_KEY:
+ rtw_mac_flush_all_queues(rtwdev, false);
rtw_sec_clear_cam(rtwdev, sec, key->hw_key_idx);
break;
}
diff --git a/drivers/net/wireless/realtek/rtw88/main.c b/drivers/net/wireless/realtek/rtw88/main.c
index edd490c507b5..71f11c973307 100644
--- a/drivers/net/wireless/realtek/rtw88/main.c
+++ b/drivers/net/wireless/realtek/rtw88/main.c
@@ -1403,6 +1403,8 @@ int rtw_register_hw(struct rtw_dev *rtwdev, struct ieee80211_hw *hw)
hw->wiphy->features |= NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR;
+ wiphy_ext_feature_set(hw->wiphy, NL80211_EXT_FEATURE_CAN_REPLACE_PTK0);
+
rtw_set_supported_band(hw, rtwdev->chip);
SET_IEEE80211_PERM_ADDR(hw, rtwdev->efuse.addr);
--
2.17.1
