Mac enhanced ACK pending update

Earlier we checked at CCA prepare Neighbour list for new neighbour.
New solution will add permission when neighbour is added to list which reduce tx drifting.

Change-Id: I9a237e936ea8d3dc538302ff5bec5e4810a2e6e4

Author: Juha Heiskanen

source/MAC/IEEE802_15_4/mac_pd_sap.c

@@ -429,7 +429,7 @@ static int8_t mac_data_interface_tx_done_cb(protocol_interface_rf_mac_setup_s *r
 
         if (rf_ptr->mac_ack_tx_active) {
             //Accept direct non crypted acks and crypted only if neighbor is at list
-            if (rf_ptr->ack_tx_possible || mac_sec_mib_device_description_get(rf_ptr, rf_ptr->enhanced_ack_buffer.DstAddr, rf_ptr->enhanced_ack_buffer.fcf_dsn.DstAddrMode, rf_ptr->enhanced_ack_buffer.DstPANId)) {
+            if (rf_ptr->ack_tx_possible) {
                 return PHY_TX_ALLOWED;
             }
 

source/MAC/IEEE802_15_4/mac_security_mib.c

@@ -281,6 +281,7 @@ int8_t mac_sec_mib_device_description_set(uint8_t atribute_index, mlme_device_de
         return -1;
     }
 
+    platform_enter_critical();
     mlme_device_descriptor_t *device_ptr = rf_mac_setup->device_description_table + atribute_index;
 
     //Copy description
@@ -293,6 +294,24 @@ int8_t mac_sec_mib_device_description_set(uint8_t atribute_index, mlme_device_de
     //tr_debug("Set %u, mac16 %x mac64: %s, %"PRIu32, atribute_index, device_descriptor->ShortAddress, trace_array(device_descriptor->ExtAddress, 8), device_descriptor->FrameCounter);
 
     *device_ptr = *device_descriptor;
+
+    if (rf_mac_setup->mac_ack_tx_active && !rf_mac_setup->ack_tx_possible &&
+            device_ptr->PANId == rf_mac_setup->enhanced_ack_buffer.DstPANId) {
+
+        //Compare address for pending neigbour add
+        if (rf_mac_setup->enhanced_ack_buffer.fcf_dsn.DstAddrMode == MAC_ADDR_MODE_16_BIT) {
+            uint16_t short_id = common_read_16_bit(rf_mac_setup->enhanced_ack_buffer.DstAddr);
+            if (short_id == device_ptr->ShortAddress) {
+                rf_mac_setup->ack_tx_possible = true;
+            }
+        } else if (rf_mac_setup->enhanced_ack_buffer.fcf_dsn.DstAddrMode == MAC_ADDR_MODE_64_BIT) {
+            if (memcmp(device_ptr->ExtAddress, rf_mac_setup->enhanced_ack_buffer.DstAddr, 8) == 0) {
+                rf_mac_setup->ack_tx_possible = true;
+            }
+        }
+    }
+    platform_exit_critical();
+
     return 0;
 }