[PATCH v3 1/3] wifi: rtw89: fix RX filter configuration for monitor mode

[Enver]

From: ph4ntom-rev <owner@xxxxxxxxxxxxxx>

Monitor mode enables sniffer mode but retains address CAM and
beacon checks in the RX filter. On RTL8852AE this suppresses
frames from other BSSIDs.

Clear the unicast/broadcast CAM match, beacon check and UID
filter bits in the local filter value while monitor mode is
active. Keep hal.rx_fltr unchanged so the normal filter is
restored when monitor mode ends. The adjusted value is written
through the existing MAC 0 and MAC 1 paths.

Signed-off-by: ph4ntom-rev <owner@xxxxxxxxxxxxxx>
---
 drivers/net/wireless/realtek/rtw89/mac80211.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtw89/mac80211.c b/drivers/net/wireless/realtek/rtw89/mac80211.c
index 9e6cafc49..bb6101ccb 100644
--- a/drivers/net/wireless/realtek/rtw89/mac80211.c
+++ b/drivers/net/wireless/realtek/rtw89/mac80211.c
@@ -377,6 +377,13 @@ static void rtw89_ops_configure_filter(struct ieee80211_hw *hw,
 		rx_fltr &= ~B_AX_A_A1_MATCH;
 	}
 
+	if (rtwdev->hw->conf.flags & IEEE80211_CONF_MONITOR) {
+		rx_fltr &= ~(B_AX_A_UC_CAM_MATCH |
+			     B_AX_A_BC_CAM_MATCH |
+			     B_AX_A_BCN_CHK_EN |
+			     B_AX_UID_FILTER_MASK);
+	}
+
 	rtw89_mac_set_rx_fltr(rtwdev, RTW89_MAC_0, rx_fltr);
 	if (!rtwdev->dbcc_en)
 		return;
-- 
2.56.0.windows.4