Merge pull request ARMmbed#2063 from ARMmbed/fhss_mac_retry_correct

CCA RETRY and and TX reretry clear calculation when FHSS re-send pack…

Author: Juha Heiskanen

source/MAC/IEEE802_15_4/mac_mcps_sap.c

@@ -1423,13 +1423,20 @@ static void mcps_data_confirm_handle(protocol_interface_rf_mac_setup_s *rf_ptr,
         // FHSS checks if this failed buffer needs to be pushed back to TX queue and retransmitted
         if ((rf_ptr->mac_tx_result == MAC_TX_FAIL) || (rf_ptr->mac_tx_result == MAC_CCA_FAIL)) {
             if (rf_ptr->fhss_api->data_tx_fail(rf_ptr->fhss_api, buffer->msduHandle, mac_convert_frame_type_to_fhss(buffer->fcf_dsn.frametype)) == true) {
+
+                if (rf_ptr->mac_tx_result == MAC_TX_FAIL) {
+                    buffer->fhss_retry_count += 1 + rf_ptr->mac_tx_status.retry;
+                } else {
+                    buffer->fhss_retry_count += rf_ptr->mac_tx_status.retry;
+                }
+                buffer->fhss_cca_retry_count += rf_ptr->mac_tx_status.cca_cnt;
                 mcps_sap_pd_req_queue_write(rf_ptr, buffer);
                 return;
             }
         }
     }
-    confirm.cca_retries = rf_ptr->mac_tx_status.cca_cnt;
-    confirm.tx_retries = rf_ptr->mac_tx_status.retry;
+    confirm.cca_retries = rf_ptr->mac_tx_status.cca_cnt + buffer->fhss_cca_retry_count;
+    confirm.tx_retries = rf_ptr->mac_tx_status.retry + buffer->fhss_retry_count;
     mac_common_data_confirmation_handle(rf_ptr, buffer);
     confirm.msduHandle = buffer->msduHandle;
     confirm.status = buffer->status;

source/MAC/IEEE802_15_4/mac_mcps_sap.h

@@ -132,6 +132,8 @@ typedef struct mac_pre_build_frame {
     uint8_t status;
     uint8_t asynch_channel;
     uint8_t csma_periods_left;
+    uint8_t fhss_retry_count;
+    uint8_t fhss_cca_retry_count;
     uint32_t tx_time;
     bool upper_layer_request;
     bool mac_allocated_payload_ptr: 1;