GAS: Handle no-ACK TX status for GAS request frames

Previously, only the success and failure (to TX) cases were handled. It
is also possible for the driver to transmit the frame, but not receive
an ACK from the recipient. Address that by waiting for a short period of
time for a response. This fixes cases where OSU provider icon fetching
could get stuck if no ACK frame is received.

Signed-off-by: Jouni Malinen <jouni@qca.qualcomm.com>

wpa_supplicant/gas_query.c

@@ -243,10 +243,17 @@ static void gas_query_tx_status(struct wpa_supplicant *wpa_s,
 	}
 	os_get_reltime(&query->last_oper);
 
-	if (result == OFFCHANNEL_SEND_ACTION_SUCCESS) {
+	if (result == OFFCHANNEL_SEND_ACTION_SUCCESS ||
+	    result == OFFCHANNEL_SEND_ACTION_NO_ACK) {
 		eloop_cancel_timeout(gas_query_timeout, gas, query);
-		eloop_register_timeout(GAS_QUERY_TIMEOUT_PERIOD, 0,
-				       gas_query_timeout, gas, query);
+		if (result == OFFCHANNEL_SEND_ACTION_NO_ACK) {
+			wpa_printf(MSG_DEBUG, "GAS: No ACK to GAS request");
+			eloop_register_timeout(0, 250000,
+					       gas_query_timeout, gas, query);
+		} else {
+			eloop_register_timeout(GAS_QUERY_TIMEOUT_PERIOD, 0,
+					       gas_query_timeout, gas, query);
+		}
 		if (query->wait_comeback && !query->retry) {
 			eloop_cancel_timeout(gas_query_rx_comeback_timeout,
 					     gas, query);