staging: rtl8712: Fix some tests against some 'data' subtype frames

[ Upstream commit 116138c ]

Commit 6e2baa4 ("staging: rtl8712: remove enum WIFI_FRAME_SUBTYPE")
was wrong because:
	WIFI_DATA_NULL != IEEE80211_STYPE_NULLFUNC
	WIFI_DATA_CFACK != IEEE80211_STYPE_DATA_CFACK
	WIFI_DATA_CFPOLL != IEEE80211_STYPE_DATA_CFPOLL
	WIFI_DATA_CFACKPOLL != IEEE80211_STYPE_DATA_CFACKPOLL

the WIFI_DATA_xxx definitions include WIFI_DATA_TYPE, which is 'BIT(3)'.
Restore the previous behavior by adding the missing
'IEEE80211_FTYPE_DATA |' (0x0008, that is to say BIT(3)) when these values
are used.

Hopefully, the wrong commit was small enough and hand review is possible.

Fixes: 6e2baa4 ("staging: rtl8712: remove enum WIFI_FRAME_SUBTYPE")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/44aebfa3c5ce8f45ae05369c73e9ff77c6d271f9.1619939806.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

drivers/staging/rtl8712/rtl871x_recv.c

@@ -374,7 +374,7 @@ static sint ap2sta_data_frame(struct _adapter *adapter,
 	if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) &&
 	    check_fwstate(pmlmepriv, _FW_LINKED)) {
 		/* if NULL-frame, drop packet */
-		if ((GetFrameSubType(ptr)) == IEEE80211_STYPE_NULLFUNC)
+		if ((GetFrameSubType(ptr)) == (IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC))
 			return _FAIL;
 		/* drop QoS-SubType Data, including QoS NULL,
 		 * excluding QoS-Data

drivers/staging/rtl8712/rtl871x_security.c

@@ -1045,9 +1045,9 @@ static void aes_cipher(u8 *key, uint hdrlen,
 	else
 		a4_exists = 1;
 
-	if ((frtype == IEEE80211_STYPE_DATA_CFACK) ||
-	    (frtype == IEEE80211_STYPE_DATA_CFPOLL) ||
-	    (frtype == IEEE80211_STYPE_DATA_CFACKPOLL)) {
+	if ((frtype == (IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA_CFACK)) ||
+	    (frtype == (IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA_CFPOLL)) ||
+	    (frtype == (IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA_CFACKPOLL))) {
 		qc_exists = 1;
 		if (hdrlen !=  WLAN_HDR_A3_QOS_LEN)
 			hdrlen += 2;
@@ -1225,9 +1225,9 @@ static void aes_decipher(u8 *key, uint hdrlen,
 		a4_exists = 0;
 	else
 		a4_exists = 1;
-	if ((frtype == IEEE80211_STYPE_DATA_CFACK) ||
-	    (frtype == IEEE80211_STYPE_DATA_CFPOLL) ||
-	    (frtype == IEEE80211_STYPE_DATA_CFACKPOLL)) {
+	if ((frtype == (IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA_CFACK)) ||
+	    (frtype == (IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA_CFPOLL)) ||
+	    (frtype == (IEEE80211_FTYPE_DATA | IEEE80211_STYPE_DATA_CFACKPOLL))) {
 		qc_exists = 1;
 		if (hdrlen != WLAN_HDR_A3_QOS_LEN)
 			hdrlen += 2;