nl80211: Register for SAE Authentication frames more strictly

If the driver requires external SAE authentication, it would result in
registration for all Authentication frames, so even non-SAE
Authentication frames might be forwarded to user space instead of being
handled internally. Fix this by using a more strict match pattern,
limiting the registration to the SAE authentication algorithm only.

Signed-off-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>

src/drivers/driver_nl80211.c

@@ -2182,6 +2182,7 @@ static int nl80211_init_connect_handle(struct i802_bss *bss)
 static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
 {
 	struct wpa_driver_nl80211_data *drv = bss->drv;
+	u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
 	int ret = 0;
 
 	if (nl80211_alloc_mgmt_handle(bss))
@@ -2189,13 +2190,14 @@ static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss)
 	wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP "
 		   "handle %p", bss->nl_mgmt);
 
-	if (drv->nlmode == NL80211_IFTYPE_ADHOC ||
-	    ((drv->capa.flags & WPA_DRIVER_FLAGS_SAE) &&
-	     !(drv->capa.flags & WPA_DRIVER_FLAGS_SME))) {
-		u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4);
-
+	if (drv->nlmode == NL80211_IFTYPE_ADHOC) {
 		/* register for any AUTH message */
 		nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0);
+	} else if ((drv->capa.flags & WPA_DRIVER_FLAGS_SAE) &&
+		   !(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
+		/* register for SAE Authentication frames */
+		nl80211_register_frame(bss, bss->nl_mgmt, type,
+				       (u8 *) "\x03\x00", 2);
 	}
 
 #ifdef CONFIG_INTERWORKING