diff options
| author | Po-Hao Huang <phhuang@realtek.com> | 2023-04-14 15:13:12 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@kernel.org> | 2023-04-20 15:33:47 +0300 |
| commit | a1b8015da57a783b3ceebd8e114afbe07536bd54 (patch) | |
| tree | 37198dc047a2f867f82113a1450280752367ec0b | |
| parent | 982f4a2004f712ce7aed7f7e69fa64e4c06eee7d (diff) | |
| download | linux-a1b8015da57a783b3ceebd8e114afbe07536bd54.tar.xz | |
wifi: rtw88: prevent scan abort with other VIFs
Only abort scan with current scanning VIF. If we have more than one
interface, we could call rtw_hw_scan_abort() with the wrong VIF as
input. This avoids potential null pointer being accessed when actually
the other VIF is scanning.
Signed-off-by: Po-Hao Huang <phhuang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230414121312.17954-1-pkshih@realtek.com
| -rw-r--r-- | drivers/net/wireless/realtek/rtw88/fw.c | 4 | ||||
| -rw-r--r-- | drivers/net/wireless/realtek/rtw88/fw.h | 2 | ||||
| -rw-r--r-- | drivers/net/wireless/realtek/rtw88/mac80211.c | 7 |
3 files changed, 8 insertions, 5 deletions
diff --git a/drivers/net/wireless/realtek/rtw88/fw.c b/drivers/net/wireless/realtek/rtw88/fw.c index 049473accdb9..f2d48091b1e9 100644 --- a/drivers/net/wireless/realtek/rtw88/fw.c +++ b/drivers/net/wireless/realtek/rtw88/fw.c @@ -2163,8 +2163,10 @@ out: return ret; } -void rtw_hw_scan_abort(struct rtw_dev *rtwdev, struct ieee80211_vif *vif) +void rtw_hw_scan_abort(struct rtw_dev *rtwdev) { + struct ieee80211_vif *vif = rtwdev->scan_info.scanning_vif; + if (!rtw_fw_feature_check(&rtwdev->fw, FW_FEATURE_SCAN_OFFLOAD)) return; diff --git a/drivers/net/wireless/realtek/rtw88/fw.h b/drivers/net/wireless/realtek/rtw88/fw.h index 0a386e6d6e0d..397cbc3f6af6 100644 --- a/drivers/net/wireless/realtek/rtw88/fw.h +++ b/drivers/net/wireless/realtek/rtw88/fw.h @@ -868,5 +868,5 @@ int rtw_hw_scan_offload(struct rtw_dev *rtwdev, struct ieee80211_vif *vif, bool enable); void rtw_hw_scan_status_report(struct rtw_dev *rtwdev, struct sk_buff *skb); void rtw_hw_scan_chan_switch(struct rtw_dev *rtwdev, struct sk_buff *skb); -void rtw_hw_scan_abort(struct rtw_dev *rtwdev, struct ieee80211_vif *vif); +void rtw_hw_scan_abort(struct rtw_dev *rtwdev); #endif diff --git a/drivers/net/wireless/realtek/rtw88/mac80211.c b/drivers/net/wireless/realtek/rtw88/mac80211.c index dbd40a26908a..b3e4c699d425 100644 --- a/drivers/net/wireless/realtek/rtw88/mac80211.c +++ b/drivers/net/wireless/realtek/rtw88/mac80211.c @@ -393,7 +393,8 @@ static void rtw_ops_bss_info_changed(struct ieee80211_hw *hw, * when disconnected by peer */ if (test_bit(RTW_FLAG_SCANNING, rtwdev->flags)) - rtw_hw_scan_abort(rtwdev, vif); + rtw_hw_scan_abort(rtwdev); + } config |= PORT_SET_NET_TYPE; @@ -870,7 +871,7 @@ static int rtw_ops_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, rtw_hw_scan_start(rtwdev, vif, req); ret = rtw_hw_scan_offload(rtwdev, vif, true); if (ret) { - rtw_hw_scan_abort(rtwdev, vif); + rtw_hw_scan_abort(rtwdev); rtw_err(rtwdev, "HW scan failed with status: %d\n", ret); } mutex_unlock(&rtwdev->mutex); @@ -890,7 +891,7 @@ static void rtw_ops_cancel_hw_scan(struct ieee80211_hw *hw, return; mutex_lock(&rtwdev->mutex); - rtw_hw_scan_abort(rtwdev, vif); + rtw_hw_scan_abort(rtwdev); mutex_unlock(&rtwdev->mutex); } |