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rtw88: add NL80211_EXT_FEATURE_CAN_REPLACE_PTK0 support

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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@realtek.com>
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Tzu-En Huang
2019-10-08 16:20:57 +08:00
committed by Kalle Valo
parent 27c65bfc43
commit 5dc32b8ace
3 changed files with 8 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/wireless/realtek/rtw88/mac.h
View File

@@ -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

1
drivers/net/wireless/realtek/rtw88/mac80211.c
View File

@@ -533,6 +533,7 @@ 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;
}

2
drivers/net/wireless/realtek/rtw88/main.c
View File

@@ -1324,6 +1324,8 @@ 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);