rtw89: configure rx_filter according to FIF_PROBE_REQ

With this patch, we can receive probe_req and reply probe_resp, and STA
can find us.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220107034239.22002-2-pkshih@realtek.com

drivers/net/wireless/realtek/rtw89/mac80211.c

@@ -161,7 +161,7 @@ static void rtw89_ops_configure_filter(struct ieee80211_hw *hw,
 	rtw89_leave_ps_mode(rtwdev);
 
 	*new_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_FCSFAIL |
-		      FIF_BCN_PRBRESP_PROMISC;
+		      FIF_BCN_PRBRESP_PROMISC | FIF_PROBE_REQ;
 
 	if (changed_flags & FIF_ALLMULTI) {
 		if (*new_flags & FIF_ALLMULTI)
@@ -192,6 +192,15 @@ static void rtw89_ops_configure_filter(struct ieee80211_hw *hw,
 			rtwdev->hal.rx_fltr |= B_AX_A_A1_MATCH;
 		}
 	}
+	if (changed_flags & FIF_PROBE_REQ) {
+		if (*new_flags & FIF_PROBE_REQ) {
+			rtwdev->hal.rx_fltr &= ~B_AX_A_BC_CAM_MATCH;
+			rtwdev->hal.rx_fltr &= ~B_AX_A_UC_CAM_MATCH;
+		} else {
+			rtwdev->hal.rx_fltr |= B_AX_A_BC_CAM_MATCH;
+			rtwdev->hal.rx_fltr |= B_AX_A_UC_CAM_MATCH;
+		}
+	}
 
 	rtw89_write32_mask(rtwdev,
 			   rtw89_mac_reg_by_idx(R_AX_RX_FLTR_OPT, RTW89_MAC_0),