add du handle f1ap setup response

openair2/F1AP/f1ap_du_interface_management.c

@@ -38,7 +38,7 @@
 #include "assertions.h"
 
 extern f1ap_setup_req_t *f1ap_du_data;
-
+extern RAN_CONTEXT_t RC;
 
 int DU_handle_RESET(instance_t instance,
                                 uint32_t assoc_id,
@@ -540,9 +540,15 @@ int DU_handle_F1_SETUP_RESPONSE(instance_t instance,
     0,0,//MSC_AS_TIME_ARGS(ctxt_pP),
     assoc_id);
 
+  if (RC.nrrrc[0]->node_type == ngran_gNB_DU) {
+    LOG_D(F1AP, "Sending F1AP_SETUP_RESP ITTI message to GNB_APP with assoc_id (%d->%d)\n",
+         assoc_id,ENB_MODULE_ID_TO_INSTANCE(assoc_id));
+    itti_send_msg_to_task(TASK_GNB_APP, GNB_MODULE_ID_TO_INSTANCE(assoc_id), msg_p);
+  } else {
     LOG_D(F1AP, "Sending F1AP_SETUP_RESP ITTI message to ENB_APP with assoc_id (%d->%d)\n",
          assoc_id,ENB_MODULE_ID_TO_INSTANCE(assoc_id));
     itti_send_msg_to_task(TASK_ENB_APP, ENB_MODULE_ID_TO_INSTANCE(assoc_id), msg_p);
+  }
 
    return 0;
 }

openair2/GNB_APP/gnb_app.c

@@ -136,7 +136,6 @@ static uint32_t gNB_app_register_x2(uint32_t gnb_id_start, uint32_t gnb_id_end)
   return register_gnb_x2_pending;
 }
 
-
 /*------------------------------------------------------------------------------*/
 void *gNB_app_task(void *args_p)
 {
@@ -144,6 +143,9 @@ void *gNB_app_task(void *args_p)
   uint32_t                        gnb_nb = RC.nb_nr_inst; 
   uint32_t                        gnb_id_start = 0;
   uint32_t                        gnb_id_end = gnb_id_start + gnb_nb;
+  uint32_t                        registered_gnb = 0;
+  uint32_t                        register_gnb_pending;
+  long                            gnb_register_retry_timer_id;
 
   uint32_t                        gnb_id;
   MessageDef                      *msg_p           = NULL;
@@ -189,8 +191,10 @@ void *gNB_app_task(void *args_p)
   if (AMF_MODE_ENABLED) {
   /* Try to register each gNB */
   //registered_gnb = 0;
-  __attribute__((unused)) uint32_t register_gnb_pending = gNB_app_register (gnb_id_start, gnb_id_end);//, gnb_properties_p);
+  register_gnb_pending = gNB_app_register (gnb_id_start, gnb_id_end);//, gnb_properties_p);
   } else {
+    // for test
+    register_gnb_pending = 1;
     for (gnb_id = gnb_id_start; (gnb_id < gnb_id_end) ; gnb_id++) {
       if (!NODE_IS_DU(RC.nrrrc[gnb_id]->node_type)) {
         /* Start L2L1 task */
@@ -268,6 +272,50 @@ void *gNB_app_task(void *args_p)
 */
       break;
 
+    case F1AP_SETUP_RESP:
+      AssertFatal(NODE_IS_DU(RC.nrrrc[0]->node_type), "Should not have received F1AP_SETUP_RESP in CU/gNB\n");
+
+      LOG_I(GNB_APP, "Received %s: associated ngran_gNB_CU %s with %d cells to activate\n", ITTI_MSG_NAME (msg_p),
+      F1AP_SETUP_RESP(msg_p).gNB_CU_name,F1AP_SETUP_RESP(msg_p).num_cells_to_activate);
+      
+      gNB_app_handle_f1ap_setup_resp(&F1AP_SETUP_RESP(msg_p));
+
+      DevAssert(register_gnb_pending > 0);
+      register_gnb_pending--;
+
+      /* Check if at least gNB is registered with one AMF */
+      if (F1AP_SETUP_RESP(msg_p).num_cells_to_activate > 0) {
+        registered_gnb++;
+      }
+
+      /* Check if all register gNB requests have been processed */
+      if (register_gnb_pending == 0) {
+        if (registered_gnb == gnb_nb) {
+          /* If all gNB cells are registered, start L2L1 task */
+          MessageDef *msg_init_p;
+
+          msg_init_p = itti_alloc_new_message (TASK_GNB_APP, INITIALIZE_MESSAGE);
+          itti_send_msg_to_task (TASK_L2L1, INSTANCE_DEFAULT, msg_init_p);
+
+        } else {
+          LOG_W(GNB_APP, " %d gNB not associated with a AMF, retrying registration in %d seconds ...\n",
+                gnb_nb - registered_gnb,  GNB_REGISTER_RETRY_DELAY);
+
+          /* Restart the gNB registration process in GNB_REGISTER_RETRY_DELAY seconds */
+          if (timer_setup (GNB_REGISTER_RETRY_DELAY, 0, TASK_GNB_APP, INSTANCE_DEFAULT, TIMER_ONE_SHOT,
+                           NULL, &gnb_register_retry_timer_id) < 0) {
+            LOG_E(GNB_APP, " Can not start gNB register retry timer, use \"sleep\" instead!\n");
+
+            sleep(GNB_REGISTER_RETRY_DELAY);
+            /* Restart the registration process */
+            registered_gnb = 0;
+            register_gnb_pending = gNB_app_register (gnb_id_start, gnb_id_end);
+          }
+        }
+      }
+
+      break;
+
     case NGAP_DEREGISTERED_GNB_IND:
       LOG_W(GNB_APP, "[gNB %d] Received %s: associated AMF %d\n", instance, msg_name,
             NGAP_DEREGISTERED_GNB_IND(msg_p).nb_amf);

openair2/GNB_APP/gnb_config.c

@@ -1419,3 +1419,39 @@ int RCconfig_NR_DU_F1(MessageDef *msg_p, uint32_t i) {
   }
   return 0;
 }
+
+int du_check_plmn_identity(rrc_gNB_carrier_data_t *carrier,uint16_t mcc,uint16_t mnc,uint8_t mnc_digit_length) {
+  return (1);
+}
+
+void gNB_app_handle_f1ap_setup_resp(f1ap_setup_resp_t *resp) {
+  int i, j, si_ind;
+  LOG_I(GNB_APP, "cells_to_activated %d, RRC instances %d\n",
+        resp->num_cells_to_activate, RC.nb_nr_inst);
+
+  for (j = 0; j < resp->num_cells_to_activate; j++) {
+    for (i = 0; i < RC.nb_nr_inst; i++) {
+      rrc_gNB_carrier_data_t *carrier =  &RC.nrrrc[i]->carrier;
+      // identify local index of cell j by nr_cellid, plmn identity and physical cell ID
+      LOG_I(GNB_APP, "Checking cell %d, rrc inst %d : rrc->nr_cellid %lx, resp->nr_cellid %lx\n",
+            j, i, RC.nrrrc[i]->nr_cellid, resp->nr_cellid[j]);
+
+      if (RC.nrrrc[i]->nr_cellid == resp->nr_cellid[j] &&
+          (du_check_plmn_identity(carrier, resp->mcc[j], resp->mnc[j], resp->mnc_digit_length[j])>0 &&
+           resp->nrpci[j] == carrier->physCellId)) {
+        // copy system information and decode it
+        for (si_ind=0; si_ind<resp->num_SI[j]; si_ind++)  {
+          // extract_and_decode_SI(i,
+          //                       si_ind,
+          //                       resp->SI_container[j][si_ind],
+          //                       resp->SI_container_length[j][si_ind]);
+        }
+
+        // perform MAC/L1 common configuration
+        // configure_du_mac(i);
+      } else {
+        LOG_E(GNB_APP, "F1 Setup Response not matching\n");
+      }
+    }
+  }
+}

openair2/GNB_APP/gnb_config.h

@@ -40,6 +40,7 @@
 #include "PHY/defs_eNB.h"
 #include "s1ap_messages_types.h"
 #include "ngap_messages_types.h"
+#include "f1ap_messages_types.h"
 
 #ifdef CMAKER
 #include "rrc_messages_types.h"
@@ -106,6 +107,7 @@ void RCconfig_NRRRC(MessageDef *msg_p, uint32_t i, gNB_RRC_INST *rrc);
 int RCconfig_NR_NG(MessageDef *msg_p, uint32_t i);
 int RCconfig_NR_X2(MessageDef *msg_p, uint32_t i);
 int RCconfig_NR_DU_F1(MessageDef *msg_p, uint32_t i);
+void gNB_app_handle_f1ap_setup_resp(f1ap_setup_resp_t *resp);
 
 #endif /* GNB_CONFIG_H_ */
 /** @} */