FST: Print reason for ignoring FST Action frame in debug log

This makes it easier to understand why some frames are not processed.

Signed-off-by: Jouni Malinen <j@w1.fi>

src/ap/ieee802_11.c

@@ -2122,6 +2122,9 @@ static int handle_action(struct hostapd_data *hapd,
 	case WLAN_ACTION_FST:
 		if (hapd->iface->fst)
 			fst_rx_action(hapd->iface->fst, mgmt, len);
+		else
+			wpa_printf(MSG_DEBUG,
+				   "FST: Ignore FST Action frame - no FST attached");
 		return 1;
 #endif /* CONFIG_FST */
 	case WLAN_ACTION_PUBLIC:

src/fst/fst.c

@@ -183,6 +183,10 @@ void fst_rx_action(struct fst_iface *iface, const struct ieee80211_mgmt *mgmt,
 {
 	if (fst_iface_is_connected(iface, mgmt->sa))
 		fst_session_on_action_rx(iface, mgmt, len);
+	else
+		wpa_printf(MSG_DEBUG,
+			   "FST: Ignore FST Action frame - no FST connection with "
+			   MACSTR, MAC2STR(mgmt->sa));
 }