Additional messages for error diagnosis for net-ctrld HO

openair2/ENB_APP/flexran_agent_common.c

@@ -871,7 +871,7 @@ int flexran_agent_rrc_trigger_handover(mid_t mod_id, const void *params, Protoco
       rnti_found = 1;
       // Call the proper wrapper in FlexRAN API
       if (flexran_call_rrc_trigger_handover(mod_id, ho_command->rnti, ho_command->target_phy_cell_id) < 0) {
-        LOG_E(FLEXRAN_AGENT, "Error in handovering user %d\n", i);
+        LOG_E(FLEXRAN_AGENT, "Error in handovering user %d/RNTI %x\n", i, rnti);
       }
       break;
     }

openair2/RRC/LTE/rrc_eNB.c

@@ -4842,14 +4842,18 @@ int cell_found = 0;
 
   /* Check if eNB id was found */
 
-  if (!cell_found)
+  if (!cell_found) {
+    LOG_E(RRC, "%s(): cannot find target eNB with phyCellId %d\n", __func__, target_cell_id);
     return -1;
+  }
 
   /* Handover process is following */
 
   /* if X2AP is disabled, do nothing */
-  if (!is_x2ap_enabled())
+  if (!is_x2ap_enabled()) {
+    LOG_E(RRC, "X2 is disabled\n");
     return -1;
+  }
 
   LOG_D(RRC, "Handover is triggered by FlexRAN controller...\n");