LLC data indication and fhss channel set update

LLC data indication only accept data trough when GTK hash is configured.

Channel set is not accepted middle of ACK send operation.

Change-Id: I662fbcd7891c933e0194c1532bc05679e7929498

Author: Juha Heiskanen

source/6LoWPAN/ws/ws_llc_data_service.c

@@ -475,6 +475,9 @@ static void ws_llc_mac_indication_cb(const mac_api_t* api, const mcps_data_ind_t
     }
 
     protocol_interface_info_entry_t *interface = base->interface_ptr;
+    if (!base->ie_params.gtkhash && ws_utt.message_type == WS_FT_DATA) {
+        return;
+    }
 
     //Discover 2 Payload Heder
     if (ws_utt.message_type == WS_FT_DATA || ws_utt.message_type == WS_FT_EAPOL) {

source/MAC/IEEE802_15_4/mac_fhss_callbacks.c

@@ -71,7 +71,7 @@ int mac_set_channel(const fhss_api_t *fhss_api, uint8_t channel_number)
     if (!mac_setup) {
         return -1;
     }
-    if (mac_setup->active_pd_data_request && mac_setup->active_pd_data_request->asynch_request) {
+    if (mac_setup->mac_ack_tx_active || (mac_setup->active_pd_data_request && mac_setup->active_pd_data_request->asynch_request)) {
         return -1;
     }
     return mac_mlme_rf_channel_change(mac_setup, channel_number);