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ENDC: Basic implementation of x2ap_eNB_generate_ENDC_x2_SgNB_addition_request()

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This commit is contained in:
matzakos
2019-10-25 14:13:49 +02:00
parent cc8be29a8d
commit 4e64a34ada
5 changed files with 343 additions and 14 deletions
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openair2/X2AP/x2ap_eNB_generate_messages.c
+149 -5
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@@ -1098,7 +1098,6 @@ int x2ap_eNB_generate_senb_addition_request (x2ap_eNB_instance_t *instance_p, x2
return ret;
}
//Panos:
int x2ap_eNB_generate_senb_addition_request_ack (x2ap_eNB_instance_t *instance_p, x2ap_eNB_data_t *x2ap_eNB_data_p,
x2ap_senb_addition_req_ack_t *x2ap_addition_req_ack)
{
@@ -1119,8 +1118,6 @@ int x2ap_eNB_generate_senb_addition_request_ack (x2ap_eNB_instance_t *instance_p
DevAssert(instance_p != NULL);
DevAssert(x2ap_eNB_data_p != NULL);
//Panos: The fact that we have separate IDs here is because the ID for a specific UE might be different
//between the 2 eNBs?
//ue_id = x2ap_addition_req_ack->x2_id_target; //Panos: change name to master_x2...
//id_source = x2ap_id_get_id_source(&instance_p->id_manager, ue_id);
//id_target = ue_id;
@@ -1129,7 +1126,6 @@ int x2ap_eNB_generate_senb_addition_request_ack (x2ap_eNB_instance_t *instance_p
memset(&pdu, 0, sizeof(pdu));
pdu.present = X2AP_X2AP_PDU_PR_successfulOutcome;
pdu.choice.successfulOutcome.procedureCode = X2AP_ProcedureCode_id_seNBAdditionPreparation;
//Panos: What does the criticality indicate here?
pdu.choice.successfulOutcome.criticality = X2AP_Criticality_reject;
pdu.choice.successfulOutcome.value.present = X2AP_SuccessfulOutcome__value_PR_SeNBAdditionRequestAcknowledge;
out = &pdu.choice.successfulOutcome.value.choice.SeNBAdditionRequestAcknowledge;
@@ -1145,7 +1141,6 @@ int x2ap_eNB_generate_senb_addition_request_ack (x2ap_eNB_instance_t *instance_p
/* mandatory */
ie = (X2AP_SeNBAdditionRequestAcknowledge_IEs_t *)calloc(1, sizeof(X2AP_SeNBAdditionRequestAcknowledge_IEs_t));
ie->id = X2AP_ProtocolIE_ID_id_SeNB_UE_X2AP_ID;
//Panos: Why for the X2_HANDOVER_REQ_ACK here the criticality is ignore whereas in the specs it is reject?
ie->criticality = X2AP_Criticality_reject;
ie->value.present = X2AP_SeNBAdditionRequestAcknowledge_IEs__value_PR_UE_X2AP_ID_1;
ie->value.choice.UE_X2AP_ID_1 = 0;
@@ -1500,3 +1495,152 @@ int x2ap_eNB_generate_ENDC_x2_setup_response(
return ret;
}
int x2ap_eNB_generate_ENDC_x2_SgNB_addition_request(
x2ap_eNB_instance_t *instance_p, x2ap_eNB_data_t *x2ap_eNB_data_p, int ue_id)
{
X2AP_X2AP_PDU_t pdu;
X2AP_SgNBAdditionRequest_t *out;
X2AP_SgNBAdditionRequest_IEs_t *ie;
X2AP_E_RABs_ToBeAdded_SgNBAddReq_ItemIEs_t *e_RABS_ToBeAdded_SgNBAddReq_ItemIEs;
X2AP_E_RABs_ToBeAdded_SgNBAddReq_Item_t *e_RABS_ToBeAdded_SgNBAddReq_Item;
uint8_t *buffer;
uint32_t len;
int ret = 0;
// Currently hardcoded (dummy) values filling the fields of SgNB_addition_request message. To be substituted
// with values coming from RRC.
uint16_t nRencryptionAlgorithms = 0;
uint16_t nRintegrityProtectionAlgorithms = 0;
uint8_t SgNBSecurityKey[32] = { 0 };
int uEaggregateMaximumBitRateDownlink = 10^8;
int uEaggregateMaximumBitRateUplink = 10^8;
int e_rabs_tobeadded = 1;
int e_RAB_ID = 1;
int drb_ID = 2;
long int pDCPatSgNB = X2AP_EN_DC_ResourceConfiguration__pDCPatSgNB_present;
long int mCGresources = X2AP_EN_DC_ResourceConfiguration__mCGresources_present;
long int sCGresources = X2AP_EN_DC_ResourceConfiguration__sCGresources_present;
int qCI = 1;
X2AP_Pre_emptionCapability_t pre_emptionCapability = X2AP_Pre_emptionCapability_shall_not_trigger_pre_emption;
X2AP_Pre_emptionVulnerability_t pre_emptionVulnerability = X2AP_Pre_emptionVulnerability_not_pre_emptable;
e_rab_setup_t e_MCG_rabs_tobeadded;
e_MCG_rabs_tobeadded.gtp_teid = 0;
e_MCG_rabs_tobeadded.eNB_addr.length = 24;
uint8_t buf[20] = { 0 };
memcpy(e_MCG_rabs_tobeadded.eNB_addr.buffer, buf, 20*sizeof(uint8_t));
OCTET_STRING_t CG_Config_Info;
char buf2[4096] = { 0 };
memcpy(CG_Config_Info.buf, buf2, 4096);
CG_Config_Info.size = 4096;
DevAssert(instance_p != NULL);
DevAssert(x2ap_eNB_data_p != NULL);
x2ap_eNB_data_p->state = X2AP_ENB_STATE_WAITING;
/* Prepare the X2AP message to encode */
memset(&pdu, 0, sizeof(pdu));
pdu.present = X2AP_X2AP_PDU_PR_initiatingMessage;
pdu.choice.successfulOutcome.procedureCode = X2AP_ProcedureCode_id_sgNBAdditionPreparation;
pdu.choice.successfulOutcome.criticality = X2AP_Criticality_reject;
pdu.choice.successfulOutcome.value.present = X2AP_InitiatingMessage__value_PR_SgNBAdditionRequest;
out = &pdu.choice.initiatingMessage.value.choice.SgNBAdditionRequest;
ie = (X2AP_SgNBAdditionRequest_IEs_t *)calloc(1, sizeof(X2AP_SgNBAdditionRequest_IEs_t));
ie->id = X2AP_ProtocolIE_ID_id_MeNB_UE_X2AP_ID; //Not sure about that
ie->criticality= X2AP_Criticality_reject;
ie->value.present = X2AP_SgNBAdditionRequest_IEs__value_PR_UE_X2AP_ID;
ie->value.choice.UE_X2AP_ID = ue_id; //x2ap_id_get_id_source(&instance_p->id_manager, ue_id);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
ie = (X2AP_SgNBAdditionRequest_IEs_t *)calloc(1, sizeof(X2AP_SgNBAdditionRequest_IEs_t));
ie->id = X2AP_ProtocolIE_ID_id_NRUESecurityCapabilities;
ie->criticality = X2AP_Criticality_reject;
ie->value.present = X2AP_SgNBAdditionRequest_IEs__value_PR_NRUESecurityCapabilities;
INT16_TO_BIT_STRING(nRencryptionAlgorithms, &ie->value.choice.NRUESecurityCapabilities.nRencryptionAlgorithms);
INT16_TO_BIT_STRING(nRintegrityProtectionAlgorithms, &ie->value.choice.NRUESecurityCapabilities.nRintegrityProtectionAlgorithms);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
ie = (X2AP_SgNBAdditionRequest_IEs_t *)calloc(1, sizeof(X2AP_SgNBAdditionRequest_IEs_t));
ie->id = X2AP_ProtocolIE_ID_id_SgNBSecurityKey;
ie->criticality = X2AP_Criticality_reject;
ie->value.present = X2AP_SgNBAdditionRequest_IEs__value_PR_SgNBSecurityKey;
KENB_STAR_TO_BIT_STRING(SgNBSecurityKey, &ie->value.choice.SgNBSecurityKey);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
ie = (X2AP_SgNBAdditionRequest_IEs_t *)calloc(1, sizeof(X2AP_SgNBAdditionRequest_IEs_t));
ie->id = X2AP_ProtocolIE_ID_id_SgNBUEAggregateMaximumBitRate;
ie->criticality = X2AP_Criticality_reject;
ie->value.present = X2AP_SgNBAdditionRequest_IEs__value_PR_UEAggregateMaximumBitRate;
INT32_TO_BUFFER(uEaggregateMaximumBitRateDownlink, &ie->value.choice.UEAggregateMaximumBitRate.uEaggregateMaximumBitRateDownlink.buf);
ie->value.choice.UEAggregateMaximumBitRate.uEaggregateMaximumBitRateDownlink.size = 4;
INT32_TO_BUFFER(uEaggregateMaximumBitRateUplink, &ie->value.choice.UEAggregateMaximumBitRate.uEaggregateMaximumBitRateUplink.buf);
ie->value.choice.UEAggregateMaximumBitRate.uEaggregateMaximumBitRateUplink.size = 4;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
ie = (X2AP_SgNBAdditionRequest_IEs_t *)calloc(1, sizeof(X2AP_SgNBAdditionRequest_IEs_t));
//Not sure if id should be X2AP_ProtocolIE_ID_id_E_RABs_ToBeAdded_List or X2AP_ProtocolIE_ID_id_E_RABs_ToBeAdded_SgNBAddReqList
ie->id = X2AP_ProtocolIE_ID_id_E_RABs_ToBeAdded_SgNBAddReqList;
ie->criticality = X2AP_Criticality_reject;
ie->value.present = X2AP_SgNBAdditionRequest_IEs__value_PR_E_RABs_ToBeAdded_SgNBAddReqList;
for (int i=0;i<e_rabs_tobeadded;i++) {
e_RABS_ToBeAdded_SgNBAddReq_ItemIEs = (X2AP_E_RABs_ToBeAdded_SgNBAddReq_ItemIEs_t *)calloc(1,sizeof(X2AP_E_RABs_ToBeAdded_SgNBAddReq_ItemIEs_t));
e_RABS_ToBeAdded_SgNBAddReq_ItemIEs->id = X2AP_ProtocolIE_ID_id_E_RABs_Admitted_ToBeAdded_Item;
e_RABS_ToBeAdded_SgNBAddReq_ItemIEs->criticality = X2AP_Criticality_ignore;
e_RABS_ToBeAdded_SgNBAddReq_ItemIEs->value.present = X2AP_E_RABs_Admitted_ToBeAdded_ItemIEs__value_PR_E_RABs_Admitted_ToBeAdded_Item;
e_RABS_ToBeAdded_SgNBAddReq_Item = &e_RABS_ToBeAdded_SgNBAddReq_ItemIEs->value.choice.E_RABs_ToBeAdded_SgNBAddReq_Item;
{
e_RABS_ToBeAdded_SgNBAddReq_Item->drb_ID = drb_ID;
e_RABS_ToBeAdded_SgNBAddReq_Item->e_RAB_ID = e_RAB_ID;
e_RABS_ToBeAdded_SgNBAddReq_Item->en_DC_ResourceConfiguration.pDCPatSgNB = pDCPatSgNB;
e_RABS_ToBeAdded_SgNBAddReq_Item->en_DC_ResourceConfiguration.mCGresources = mCGresources;
e_RABS_ToBeAdded_SgNBAddReq_Item->en_DC_ResourceConfiguration.sCGresources = sCGresources;
if (pDCPatSgNB == X2AP_EN_DC_ResourceConfiguration__pDCPatSgNB_present){
e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.full_E_RAB_Level_QoS_Parameters.qCI = qCI;
e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.full_E_RAB_Level_QoS_Parameters.allocationAndRetentionPriority.pre_emptionCapability = pre_emptionCapability;
e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.full_E_RAB_Level_QoS_Parameters.allocationAndRetentionPriority.pre_emptionVulnerability = pre_emptionVulnerability;
//Continue from filling the UL_GTPtunnelEndpointInformation inspired from how it is done for the HO case
INT32_TO_OCTET_STRING(e_MCG_rabs_tobeadded.gtp_teid, &e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_UL_GTPtunnelEndpoint.gTP_TEID);
e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_UL_GTPtunnelEndpoint.transportLayerAddress.size = e_MCG_rabs_tobeadded.eNB_addr.length/8;
e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_UL_GTPtunnelEndpoint.transportLayerAddress.bits_unused = e_MCG_rabs_tobeadded.eNB_addr.length%8;
e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_UL_GTPtunnelEndpoint.transportLayerAddress.buf =
calloc(1, e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_UL_GTPtunnelEndpoint.transportLayerAddress.size);
memcpy (e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_UL_GTPtunnelEndpoint.transportLayerAddress.buf,
e_MCG_rabs_tobeadded.eNB_addr.buffer,
e_RABS_ToBeAdded_SgNBAddReq_Item->resource_configuration.choice.sgNBPDCPpresent.s1_UL_GTPtunnelEndpoint.transportLayerAddress.size);
}
}
ASN_SEQUENCE_ADD(&ie->value.choice.E_RABs_ToBeAdded_SgNBAddReqList.list, e_RABS_ToBeAdded_SgNBAddReq_ItemIEs);
}
ie = (X2AP_SgNBAdditionRequest_IEs_t *)calloc(1, sizeof(X2AP_SgNBAdditionRequest_IEs_t));
memcpy(ie->value.choice.MeNBtoSgNBContainer.buf, CG_Config_Info.buf, CG_Config_Info.size);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
if (x2ap_eNB_encode_pdu(&pdu, &buffer, &len) < 0) {
X2AP_ERROR("Failed to encode ENDC X2 setup response\n");
return -1;
}
MSC_LOG_TX_MESSAGE (MSC_X2AP_SRC_ENB, MSC_X2AP_TARGET_ENB, NULL, 0, "0 X2Setup/initiatingMessage assoc_id %u", x2ap_eNB_data_p->assoc_id);
x2ap_eNB_itti_send_sctp_data_req(instance_p->instance, x2ap_eNB_data_p->assoc_id, buffer, len, 0);
return ret;
}