FlexRAN: Handle enb_config_reply reconfiguration message

openair2/ENB_APP/flexran_agent_common.c

@@ -1101,5 +1101,25 @@ int flexran_agent_destroy_rrc_measurement(Protocol__FlexranMessage *msg){
   return 0;
 }
 
+int flexran_agent_handle_enb_config_reply(mid_t mod_id, const void *params, Protocol__FlexranMessage **msg)
+{
+  Protocol__FlexranMessage *input = (Protocol__FlexranMessage *)params;
+  Protocol__FlexEnbConfigReply *enb_config = input->enb_config_reply_msg;
+
+  if (enb_config->n_cell_config == 0) {
+    LOG_W(FLEXRAN_AGENT,
+          "received enb_config_reply message does not contain a cell_config\n");
+    *msg = NULL;
+    return 0;
+  }
+
+  if (enb_config->n_cell_config > 1)
+    LOG_W(FLEXRAN_AGENT, "ignoring slice configs for other cell except cell 0\n");
+  if (enb_config->cell_config[0]->slice_config)
+    prepare_update_slice_config(mod_id, enb_config->cell_config[0]->slice_config);
 
+  /* could test for cell configs here and maybe reconfigure/soft-restart */
 
+  *msg = NULL;
+  return 0;
+}

openair2/ENB_APP/flexran_agent_common.h

@@ -168,4 +168,11 @@ void flexran_agent_send_update_stats(mid_t mod_id);
 err_code_t flexran_agent_enable_cont_stats_update(mid_t mod_id, xid_t xid, stats_request_config_t *stats_req) ;
 err_code_t flexran_agent_disable_cont_stats_update(mid_t mod_id);
 
+/* Handle a received eNB config reply message as an "order" to reconfigure. It
+ * does not come as a reconfiguration message as this is a "structured"
+ * ProtoBuf message (as opposed to "unstructured" YAML). There is no destructor
+ * since we do not reply to this message (yet). Instead, the controller has to
+ * issue another eNB config request message. */
+int flexran_agent_handle_enb_config_reply(mid_t mod_id, const void* params, Protocol__FlexranMessage **msg);
+
 #endif

openair2/ENB_APP/flexran_agent_handler.c

@@ -46,7 +46,7 @@ flexran_agent_message_decoded_callback agent_messages_callback[][3] = {
   {0, 0, 0}, /*PROTOCOK__FLEXRAN_MESSAGE__MSG_SF_TRIGGER_MSG*/
   {0, 0, 0}, /*PROTOCOL__FLEXRAN_MESSAGE__MSG_UL_SR_INFO_MSG*/
   {flexran_agent_enb_config_reply, 0, 0}, /*PROTOCOL__FLEXRAN_MESSAGE__MSG_ENB_CONFIG_REQUEST_MSG*/
-  {0, 0, 0}, /*PROTOCOL__FLEXRAN_MESSAGE__MSG_ENB_CONFIG_REPLY_MSG*/
+  {flexran_agent_handle_enb_config_reply, 0, 0}, /*PROTOCOL__FLEXRAN_MESSAGE__MSG_ENB_CONFIG_REPLY_MSG*/
   {flexran_agent_ue_config_reply, 0, 0}, /*PROTOCOL__FLEXRAN_MESSAGE__MSG_UE_CONFIG_REQUEST_MSG*/
   {0, 0, 0}, /*PROTOCOL__FLEXRAN_MESSAGE__MSG_UE_CONFIG_REPLY_MSG*/
   {flexran_agent_lc_config_reply, 0, 0}, /*PROTOCOL__FLEXRAN_MESSAGE__MSG_LC_CONFIG_REQUEST_MSG*/