-MBMS RRC procedures for M2AP

	-On the fligh MBMS recofiguration for MBSFN, sib13,sib2 and MCCH enabled through M2 interface (MCE)
	-RRC NAS update for MBMS TUN interfaces configuration
	-UE RRC modified to handle dynamic SIB2 (MBSFN Subframe Config Lists), SIB13 (MCCH) reconfigurations (TO CAREFULLY BE CHECKED)

	ACKNOWLEDGEMENT:
 	1. This commit was developed at Vicomtech (https://www.vicomtech.org) under UE project CDN-X-ALL: "CDN edge-cloud computing for efficient cache and reliable streaming aCROSS Aggregated unicast-multicast LinkS"
 	2. Project funded by Fed4FIRE+ OC5 (https://www.fed4fire.eu)
Signed-off-by: Javier Morgade <javier.morgade@ieee.org>

openair2/RRC/LTE/L2_interface.c

@@ -77,7 +77,7 @@ mac_rrc_data_req(
   carrier = &rrc->carrier[0];
   mib     = &carrier->mib;
 
-  if(Srb_id == BCCH_SI_MBMS){
+  if((Srb_id & RAB_OFFSET )== BCCH_SI_MBMS){
     if (frameP%4 == 0){
       memcpy(&buffer_pP[0],
              RC.rrc[Mod_idP]->carrier[CC_id].SIB1_MBMS,
@@ -208,7 +208,7 @@ mac_rrc_data_req(
            RC.rrc[Mod_idP]->carrier[CC_id].sizeof_MCCH_MESSAGE[mbsfn_sync_area]);
 
     if (LOG_DEBUGFLAG(DEBUG_RRC)) {
-      LOG_D(RRC,"[eNB %d] Frame %d : MCCH request => MCCH_MESSAGE \n",Mod_idP,frameP);
+      LOG_W(RRC,"[eNB %d] Frame %d : MCCH request => MCCH_MESSAGE \n",Mod_idP,frameP);
 
       for (int i=0; i<RC.rrc[Mod_idP]->carrier[CC_id].sizeof_MCCH_MESSAGE[mbsfn_sync_area]; i++) {
         LOG_T(RRC,"%x.",buffer_pP[i]);

openair2/RRC/LTE/MESSAGES/asn1_msg.c

@@ -244,7 +244,7 @@ uint8_t do_MIB_FeMBMS(rrc_eNB_carrier_data_t *carrier, uint32_t N_RB_DL, uint32_
   //TODO additionalNonBMSFNSubframes-r14  INTEGER (0..3) ? 
 
   //if ( LOG_DEBUGFLAG(DEBUG_ASN1) ) {
-    xer_fprint(stdout, &asn_DEF_LTE_BCCH_BCH_Message_MBMS, (void *)mib_fembms);
+    //xer_fprint(stdout, &asn_DEF_LTE_BCCH_BCH_Message_MBMS, (void *)mib_fembms);
   //}
 
 
@@ -602,7 +602,7 @@ uint8_t do_SIB1_MBMS(rrc_eNB_carrier_data_t *carrier,
 
 
   //if ( LOG_DEBUGFLAG(DEBUG_ASN1) ) {
-    xer_fprint(stdout, &asn_DEF_LTE_BCCH_DL_SCH_Message_MBMS, (void *)bcch_message);
+    //xer_fprint(stdout, &asn_DEF_LTE_BCCH_DL_SCH_Message_MBMS, (void *)bcch_message);
   //}
 
   enc_rval = uper_encode_to_buffer(&asn_DEF_LTE_BCCH_DL_SCH_Message_MBMS,
@@ -755,8 +755,8 @@ uint8_t do_SIB1(rrc_eNB_carrier_data_t *carrier,
   LTE_PLMN_IdentityInfo_t PLMN_identity_info[num_plmn];
   LTE_MCC_MNC_Digit_t dummy_mcc[num_plmn][3], dummy_mnc[num_plmn][3];
   asn_enc_rval_t enc_rval;
-  LTE_SchedulingInfo_t schedulingInfo;
-  LTE_SIB_Type_t sib_type;
+  LTE_SchedulingInfo_t schedulingInfo,schedulingInfo2;
+  LTE_SIB_Type_t sib_type,sib_type2;
 
   uint8_t *buffer;
   LTE_BCCH_DL_SCH_Message_t *bcch_message;
@@ -785,6 +785,12 @@ uint8_t do_SIB1(rrc_eNB_carrier_data_t *carrier,
   memset(PLMN_identity_info,0,num_plmn * sizeof(LTE_PLMN_IdentityInfo_t));
   memset(&schedulingInfo,0,sizeof(LTE_SchedulingInfo_t));
   memset(&sib_type,0,sizeof(LTE_SIB_Type_t));
+  if(configuration->eMBMS_M2_configured){
+       memset(&schedulingInfo2,0,sizeof(LTE_SchedulingInfo_t));
+       memset(&sib_type2,0,sizeof(LTE_SIB_Type_t));
+  }
+ 
+
 
   /* as per TS 36.311, up to 6 PLMN_identity_info are allowed in list -> add one by one */
   for (int i = 0; i < configuration->num_plmn; ++i) {
@@ -882,10 +888,18 @@ uint8_t do_SIB1(rrc_eNB_carrier_data_t *carrier,
   7;
 #endif
   schedulingInfo.si_Periodicity=LTE_SchedulingInfo__si_Periodicity_rf8;
+  if(configuration->eMBMS_M2_configured){
+       schedulingInfo2.si_Periodicity=LTE_SchedulingInfo__si_Periodicity_rf8;
+  }
   // This is for SIB2/3
   sib_type=LTE_SIB_Type_sibType3;
   ASN_SEQUENCE_ADD(&schedulingInfo.sib_MappingInfo.list,&sib_type);
   ASN_SEQUENCE_ADD(&(*sib1)->schedulingInfoList.list,&schedulingInfo);
+  if(configuration->eMBMS_M2_configured){
+         sib_type2=LTE_SIB_Type_sibType13_v920;
+         ASN_SEQUENCE_ADD(&schedulingInfo2.sib_MappingInfo.list,&sib_type2);
+         ASN_SEQUENCE_ADD(&(*sib1)->schedulingInfoList.list,&schedulingInfo2);
+  }
   //  ASN_SEQUENCE_ADD(&schedulingInfo.sib_MappingInfo.list,NULL);
 #if defined(ENABLE_ITTI)
 

openair2/RRC/LTE/rrc_UE.c

@@ -4277,7 +4277,7 @@ int decode_SI( const protocol_ctxt_t *const ctxt_pP, const uint8_t eNB_index ) {
       case LTE_SystemInformation_r8_IEs__sib_TypeAndInfo__Member_PR_sib2:
         if ((UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].SIStatus&2) == 0) {
           UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].SIStatus|=2;
-          new_sib=1;
+          //new_sib=1;
           memcpy( UE_rrc_inst[ctxt_pP->module_id].sib2[eNB_index], &typeandinfo->choice.sib2, sizeof(LTE_SystemInformationBlockType2_t) );
           LOG_I( RRC, "[UE %"PRIu8"] Frame %"PRIu32" Found SIB2 from eNB %"PRIu8"\n", ctxt_pP->module_id, ctxt_pP->frame, eNB_index );
           dump_sib2( UE_rrc_inst[ctxt_pP->module_id].sib2[eNB_index] );
@@ -4362,7 +4362,58 @@ int decode_SI( const protocol_ctxt_t *const ctxt_pP, const uint8_t eNB_index ) {
             }
 #endif
           }
-        }
+        }else{
+                       //LOG_W( RRC, "[UE %d] Received new SIB1/SIB2/SIB3 with MBMSs %d\n", ctxt_pP->module_id, ((&typeandinfo->choice.sib2)->mbsfn_SubframeConfigList == NULL ? 0:1) );
+               if((&typeandinfo->choice.sib2)->mbsfn_SubframeConfigList != NULL && (UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].SIStatus&4096) == 0){
+                       LOG_W( RRC, "[UE %d] Received SIB2 with MBSFN SF Config\n", ctxt_pP->module_id );
+
+                       memcpy( UE_rrc_inst[ctxt_pP->module_id].sib2[eNB_index], &typeandinfo->choice.sib2, sizeof(LTE_SystemInformationBlockType2_t) );
+                       LOG_I( RRC, "[FRAME %05"PRIu32"][RRC_UE][MOD %02"PRIu8"][][--- MAC_CONFIG_REQ (SIB2 params  eNB %"PRIu8") --->][MAC_UE][MOD %02"PRIu8"][]\n",
+                               ctxt_pP->frame, ctxt_pP->module_id, eNB_index, ctxt_pP->module_id );
+                       rrc_mac_config_req_ue(ctxt_pP->module_id, 0, eNB_index,
+                               (LTE_RadioResourceConfigCommonSIB_t *)NULL,
+                                (struct LTE_PhysicalConfigDedicated *)NULL,
+#if (LTE_RRC_VERSION >= MAKE_VERSION(10, 0, 0))
+                                (LTE_SCellToAddMod_r10_t *)NULL,
+#endif
+                                (LTE_MeasObjectToAddMod_t **)NULL,
+                                (LTE_MAC_MainConfig_t *)NULL,
+                                0,
+                                (struct LTE_LogicalChannelConfig *)NULL,
+                                (LTE_MeasGapConfig_t *)NULL,
+                                (LTE_TDD_Config_t *)NULL,
+                                (LTE_MobilityControlInfo_t *)NULL,
+                                NULL,
+                                NULL,
+                               NULL,
+                               NULL,
+                               NULL,
+                                UE_rrc_inst[ctxt_pP->module_id].sib2[eNB_index]->mbsfn_SubframeConfigList
+#if (LTE_RRC_VERSION >= MAKE_VERSION(9, 0, 0))
+                                ,0,
+                                (LTE_MBSFN_AreaInfoList_r9_t *)NULL,
+                                (LTE_PMCH_InfoList_r9_t *)NULL
+#endif
+#ifdef CBA
+                                ,0,
+                                0
+#endif
+#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
+                                ,
+                                0,
+                                NULL,
+                                NULL
+#endif
+#if (LTE_RRC_VERSION >= MAKE_VERSION(14, 0, 0))
+                        ,
+                        0,
+                        (struct LTE_NonMBSFN_SubframeConfig_r14 *)NULL,
+                        (LTE_MBSFN_AreaInfoList_r9_t *)NULL
+#endif
+                               );
+
+               }
+       }
 
         break; // case SystemInformation_r8_IEs__sib_TypeAndInfo__Member_PR_sib2
 
@@ -4516,8 +4567,8 @@ int decode_SI( const protocol_ctxt_t *const ctxt_pP, const uint8_t eNB_index ) {
 			 (LTE_MBSFN_AreaInfoList_r9_t *)NULL
 #endif
                                );
-          break;
         }
+        break;
 
 #endif
 #if (LTE_RRC_VERSION >= MAKE_VERSION(10, 0, 0))
@@ -4587,19 +4638,30 @@ int decode_SI( const protocol_ctxt_t *const ctxt_pP, const uint8_t eNB_index ) {
       default:
         break;
     }
+    if (new_sib == 1) {
+      UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].SIcnt++;
+  
+      if (UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].SIcnt == sib1->schedulingInfoList.list.count)
+        rrc_set_sub_state( ctxt_pP->module_id, RRC_SUB_STATE_IDLE_SIB_COMPLETE );
+  
+      LOG_I(RRC,"SIStatus %x, SIcnt %d/%d\n",
+            UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].SIStatus,
+            UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].SIcnt,
+            sib1->schedulingInfoList.list.count);
+    }
   }
 
-  if (new_sib == 1) {
-    UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].SIcnt++;
+  //if (new_sib == 1) {
+  //  UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].SIcnt++;
 
-    if (UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].SIcnt == sib1->schedulingInfoList.list.count)
-      rrc_set_sub_state( ctxt_pP->module_id, RRC_SUB_STATE_IDLE_SIB_COMPLETE );
+  //  if (UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].SIcnt == sib1->schedulingInfoList.list.count)
+  //    rrc_set_sub_state( ctxt_pP->module_id, RRC_SUB_STATE_IDLE_SIB_COMPLETE );
 
-    LOG_I(RRC,"SIStatus %x, SIcnt %d/%d\n",
-          UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].SIStatus,
-          UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].SIcnt,
-          sib1->schedulingInfoList.list.count);
-  }
+  //  LOG_I(RRC,"SIStatus %x, SIcnt %d/%d\n",
+  //        UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].SIStatus,
+  //        UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].SIcnt,
+  //        sib1->schedulingInfoList.list.count);
+  //}
 
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_RRC_UE_DECODE_SI, VCD_FUNCTION_OUT);
   return 0;
@@ -4927,7 +4989,7 @@ int decode_MCCH_Message( const protocol_ctxt_t *const ctxt_pP, const uint8_t eNB
           ctxt_pP->frame,
           mbsfn_sync_area);
     return 0; // avoid decoding to prevent memory bloating
-  } else {
+  } else if(UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].State >= RRC_CONNECTED /*|| UE_rrc_inst[ctxt_pP->module_id].Info[eNB_index].State == RRC_RECONFIGURED*/){
     dec_rval = uper_decode_complete(NULL,
                                     &asn_DEF_LTE_MCCH_Message,
                                     (void **)&mcch,
@@ -5043,7 +5105,8 @@ void decode_MBSFNAreaConfiguration( module_id_t ue_mod_idP, uint8_t eNB_index, f
 #endif
 
                        );
-  UE_rrc_inst[ue_mod_idP].Info[eNB_index].MCCHStatus[mbsfn_sync_area] = 1;
+  if(UE_rrc_inst[ue_mod_idP].Info[eNB_index].State >= RRC_CONNECTED /*|| UE_rrc_inst[ue_mod_idP].Info[eNB_index].State == RRC_RECONFIGURED*/)
+  	UE_rrc_inst[ue_mod_idP].Info[eNB_index].MCCHStatus[mbsfn_sync_area] = 1;
   PROTOCOL_CTXT_SET_BY_MODULE_ID(&ctxt, ue_mod_idP, ENB_FLAG_NO, UE_rrc_inst[ue_mod_idP].Info[eNB_index].rnti, frameP, 0,eNB_index);
   // Config Radio Bearer for MBMS user data (similar way to configure for eNB side in init_MBMS function)
   rrc_pdcp_config_asn1_req(&ctxt,

openair2/RRC/LTE/rrc_eNB.c

@@ -86,6 +86,7 @@
 
 #include "rrc_eNB_S1AP.h"
 #include "rrc_eNB_GTPV1U.h"
+#include "rrc_eNB_M2AP.h"
 
 #include "pdcp.h"
 #include "gtpv1u_eNB_task.h"
@@ -9098,6 +9099,43 @@ void *rrc_enb_process_itti_msg(void *notUsed) {
       rrc_subframe_process(&RRC_SUBFRAME_PROCESS(msg_p).ctxt, RRC_SUBFRAME_PROCESS(msg_p).CC_id);
       break;
 
+    case M2AP_SETUP_RESP:
+       rrc_eNB_process_M2AP_SETUP_RESP(&ctxt,0/*CC_id*/,ENB_INSTANCE_TO_MODULE_ID(instance),&M2AP_SETUP_RESP(msg_p));
+      break;
+
+    case M2AP_MBMS_SCHEDULING_INFORMATION:
+       rrc_eNB_process_M2AP_MBMS_SCHEDULING_INFORMATION(&ctxt,0/*CC_id*/,ENB_INSTANCE_TO_MODULE_ID(instance),&M2AP_MBMS_SCHEDULING_INFORMATION(msg_p));
+       break;
+
+    case M2AP_MBMS_SESSION_START_REQ:
+       rrc_eNB_process_M2AP_MBMS_SESSION_START_REQ(&ctxt,0/*CC_id*/,ENB_INSTANCE_TO_MODULE_ID(instance),&M2AP_MBMS_SESSION_START_REQ(msg_p));
+       break;
+
+    case M2AP_MBMS_SESSION_STOP_REQ:
+       rrc_eNB_process_M2AP_MBMS_SESSION_STOP_REQ(&ctxt,&M2AP_MBMS_SESSION_STOP_REQ(msg_p));
+       break;
+
+    case M2AP_RESET:
+       rrc_eNB_process_M2AP_RESET(&ctxt,&M2AP_RESET(msg_p));
+       break;
+
+    case M2AP_ENB_CONFIGURATION_UPDATE_ACK:
+       rrc_eNB_process_M2AP_ENB_CONFIGURATION_UPDATE_ACK(&ctxt,&M2AP_ENB_CONFIGURATION_UPDATE_ACK(msg_p));
+       break;
+
+    case M2AP_ERROR_INDICATION:
+       rrc_eNB_process_M2AP_ERROR_INDICATION(&ctxt,&M2AP_ERROR_INDICATION(msg_p));
+       break;
+
+    case M2AP_MBMS_SERVICE_COUNTING_REQ:
+       rrc_eNB_process_M2AP_MBMS_SERVICE_COUNTING_REQ(&ctxt,&M2AP_MBMS_SERVICE_COUNTING_REQ(msg_p));
+       break;
+
+    case M2AP_MCE_CONFIGURATION_UPDATE:
+       rrc_eNB_process_M2AP_MCE_CONFIGURATION_UPDATE(&ctxt,&M2AP_MCE_CONFIGURATION_UPDATE(msg_p));
+       break;
+
+
     default:
       LOG_E(RRC, "[eNB %d] Received unexpected message %s\n", instance, msg_name_p);
       break;

openair2/RRC/LTE/rrc_eNB_M2AP.h

+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this file
+ * except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+/*! \file rrc_eNB_M2AP.h
+ * \brief rrc M2AP procedures for eNB
+ * \author Javier Morgade
+ * \version 0.1
+ * \company Vicomtech, Spain
+ * \email: javier.morgade@ieee.org
+ */
+
+#ifndef RRC_ENB_M2AP_H_
+#define RRC_ENB_M2AP_H_
+
+
+int
+rrc_eNB_process_M2AP_SETUP_RESP(
+  const protocol_ctxt_t *const ctxt_pP,
+  int CC_id,
+  instance_t instance,
+  const m2ap_setup_resp_t *const m2ap_setup_resp
+);
+
+int
+rrc_eNB_process_M2AP_MBMS_SCHEDULING_INFORMATION(
+  const protocol_ctxt_t *const ctxt_pP,
+  int CC_id,
+  instance_t instance,
+  const m2ap_mbms_scheduling_information_t *const m2ap_mbms_scheduling_information
+);
+
+int
+rrc_eNB_process_M2AP_MBMS_SESSION_START_REQ(
+  const protocol_ctxt_t *const ctxt_pP,
+  int CC_id,
+  instance_t instance,
+  const m2ap_session_start_req_t *const m2ap_session_start_req
+);
+
+int
+rrc_eNB_process_M2AP_MBMS_SESSION_STOP_REQ(
+  const protocol_ctxt_t *const ctxt_pP,
+  const m2ap_session_stop_req_t *const m2ap_session_stop_req
+);
+
+int
+rrc_eNB_process_M2AP_RESET(
+  const protocol_ctxt_t *const ctxt_pP,
+  const m2ap_reset_t *const m2ap_reset
+);
+
+int
+rrc_eNB_process_M2AP_ENB_CONFIGURATION_UPDATE_ACK(
+  const protocol_ctxt_t *const ctxt_pP,
+  const m2ap_enb_configuration_update_ack_t *const m2ap_enb_configuration_update_ack
+);
+
+int
+rrc_eNB_process_M2AP_ERROR_INDICATION(
+  const protocol_ctxt_t *const ctxt_pP,
+  const m2ap_error_indication_t *const m2ap_error_indication
+);
+
+int
+rrc_eNB_process_M2AP_MBMS_SERVICE_COUNTING_REQ(
+  const protocol_ctxt_t *const ctxt_pP,
+  const m2ap_mbms_service_counting_req_t *const m2ap_mbms_service_counting_req
+);
+
+int
+rrc_eNB_process_M2AP_MCE_CONFIGURATION_UPDATE(
+  const protocol_ctxt_t *const ctxt_pP,
+  const m2ap_mce_configuration_update_t *const m2ap_mce_configuration_update
+);
+
+
+void rrc_eNB_send_M2AP_MBMS_SCHEDULING_INFORMATION_RESP(
+  const protocol_ctxt_t    *const ctxt_pP
+  //,const rrc_eNB_mbms_context_t *const rrc_eNB_mbms_context
+);
+
+void rrc_eNB_send_M2AP_MBMS_SESSION_START_RESP(
+  const protocol_ctxt_t    *const ctxt_pP
+  //,const rrc_eNB_mbms_context_t *const rrc_eNB_mbms_context
+);
+
+void rrc_eNB_send_M2AP_MBMS_SESSION_STOP_RESP(
+  const protocol_ctxt_t    *const ctxt_pP
+  //,const rrc_eNB_mbms_context_t *const rrc_eNB_mbms_context
+);
+
+void rrc_eNB_send_M2AP_MBMS_SESSION_UPDATE_RESP(
+  const protocol_ctxt_t    *const ctxt_pP
+  //,const rrc_eNB_mbms_context_t *const rrc_eNB_mbms_context
+);
+
+#endif /* RRC_ENB_M2AP_H_ */

openair2/RRC/NAS/nas_config.c

@@ -230,6 +230,45 @@ int NAS_config(char *interfaceName, char *ipAddress, char *networkMask, char *br
   return returnValue;
 }
 
+int nas_config_mbms(int interface_id, int thirdOctet, int fourthOctet, char *ifname) {
+  //char buf[5];
+  char ipAddress[20];
+  char broadcastAddress[20];
+  char interfaceName[20];
+  int returnValue;
+  //if(strcmp(ifname,"ue") == 0)
+       //sprintf(ipAddress, "%s.%d.%d", "20.0",thirdOctet,fourthOctet);
+  ////else
+       sprintf(ipAddress, "%s.%d.%d",baseNetAddress,thirdOctet,fourthOctet);
+
+  sprintf(broadcastAddress, "%s.%d.255",baseNetAddress, thirdOctet);
+  sprintf(interfaceName, "%s%s%d", (UE_NAS_USE_TUN || ENB_NAS_USE_TUN)?"oaitun_":ifname,
+          UE_NAS_USE_TUN?ifname/*"ue"*/: (ENB_NAS_USE_TUN?ifname/*"enb"*/:""),interface_id);
+  bringInterfaceUp(interfaceName, 0);
+  // sets the machine address
+  returnValue= setInterfaceParameter(interfaceName, ipAddress,SIOCSIFADDR);
+
+  // sets the machine network mask
+  if(!returnValue)
+    returnValue= setInterfaceParameter(interfaceName, netMask,SIOCSIFNETMASK);
+
+  // sets the machine broadcast address
+  if(!returnValue)
+    returnValue= setInterfaceParameter(interfaceName, broadcastAddress,SIOCSIFBRDADDR);
+
+  if(!returnValue)
+    bringInterfaceUp(interfaceName, 1);
+
+  if(!returnValue)
+    LOG_I(OIP,"Interface %s successfuly configured, ip address %s, mask %s broadcast address %s\n",
+          interfaceName, ipAddress, netMask, broadcastAddress);
+  else
+    LOG_E(OIP,"Interface %s couldn't be configured (ip address %s, mask %s broadcast address %s)\n",
+          interfaceName, ipAddress, netMask, broadcastAddress);
+
+  return returnValue;
+}
+
 // non blocking full configuration of the interface (address, and the two lest octets of the address)
 int nas_config(int interface_id, int thirdOctet, int fourthOctet, char *ifname) {
   //char buf[5];

openair2/RRC/NAS/nas_config.h

@@ -63,6 +63,20 @@ int NAS_config(char *interfaceName, char *ipAddress, char *networkMask, char *br
  */
 int nas_config(int interface_id, int thirdOctet, int fourthOctet, char *ifsuffix);
 
+/*! \fn int  nas_config_mbms(char*, int, int)
+ * \brief This function initializes the nasmesh interface using the basic values,
+ * basic address, network mask and broadcast address, as the default configured
+ * ones
+ * \param[in] interfaceName, the name of the interface, e.g. nasmesh0 or nasmesh1
+ * \param[in] third octet of the ip address e.g. for the 10.1.2.3 address would be 2
+ * \param[in] fourth octet of the ip address e.g. for the 10.1.2.3 address would be 3
+ * \return 0 on success, otherwise 1, if couldn't open a socket and 2 if the ioctl fails
+ * \note
+ * @ingroup  ?????
+ */
+int nas_config_mbms(int interface_id, int thirdOctet, int fourthOctet, char *ifsuffix);
+
+
 /*! \fn int  blocking_NAS_config(char*, char*, char*, char*)
  * \brief This function initializes the nasmesh interface, in a blocking way,
  * the system calls are interrupted