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ENDC path switch S1-U: Integrated S1AP E-RAB-Modification indication message at eNB, interfacing with RRC and X2AP to get proper configuration of E-RABs to be modified and GTP-U configuration at gNB

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This commit is contained in:
matzakos
2020-03-11 10:37:48 +01:00
parent e7c5bc55c4
commit 07a2a095d3
22 changed files with 449 additions and 60 deletions
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openair3/S1AP/s1ap_eNB.c
+10 -1
View File
@@ -69,7 +69,6 @@ s1ap_eNB_config_t s1ap_config;
static int s1ap_eNB_generate_s1_setup_request(
s1ap_eNB_instance_t *instance_p, s1ap_eNB_mme_data_t *s1ap_mme_data_p);
void s1ap_eNB_handle_register_eNB(instance_t instance, s1ap_register_enb_req_t *s1ap_register_eNB);
void s1ap_eNB_handle_sctp_association_resp(instance_t instance, sctp_new_association_resp_t *sctp_new_association_resp);
@@ -361,6 +360,12 @@ void *s1ap_eNB_process_itti_msg(void *notUsed) {
}
break;
case S1AP_E_RAB_MODIFICATION_IND: {
s1ap_eNB_generate_E_RAB_Modification_Indication(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&S1AP_E_RAB_MODIFICATION_IND(received_msg));
}
break;
case S1AP_UE_CONTEXT_RELEASE_COMPLETE: {
s1ap_ue_context_release_complete(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&S1AP_UE_CONTEXT_RELEASE_COMPLETE(received_msg));
@@ -508,3 +513,7 @@ static int s1ap_eNB_generate_s1_setup_request(
s1ap_eNB_itti_send_sctp_data_req(instance_p->instance, s1ap_mme_data_p->assoc_id, buffer, len, 0);
return ret;
}
openair3/S1AP/s1ap_eNB_handlers.c
+18
View File
@@ -104,6 +104,11 @@ int s1ap_eNB_handle_s1_path_switch_request_failure(uint32_t assoc_
uint32_t stream,
S1AP_S1AP_PDU_t *pdu);
static
int s1ap_eNB_handle_s1_ENDC_e_rab_modification_confirm(uint32_t assoc_id,
uint32_t stream,
S1AP_S1AP_PDU_t *pdu);
/* Handlers matrix. Only eNB related procedure present here */
s1ap_message_decoded_callback messages_callback[][3] = {
{ 0, 0, 0 }, /* HandoverPreparation */
@@ -154,6 +159,9 @@ s1ap_message_decoded_callback messages_callback[][3] = {
{ 0, 0, 0 }, /* UplinkUEAssociatedLPPaTransport */
{ 0, 0, 0 }, /* DownlinkNonUEAssociatedLPPaTransport */
{ 0, 0, 0 }, /* UplinkNonUEAssociatedLPPaTransport */
{ 0, 0, 0 }, /* UERadioCapabilityMatch */
{ 0, 0, 0 }, /* PWSRestartIndication */
{ 0, s1ap_eNB_handle_s1_ENDC_e_rab_modification_confirm, 0 }, /* E_RABModificationIndication */
};
char *s1ap_direction2String(int s1ap_dir) {
static char *s1ap_direction_String[] = {
@@ -1722,3 +1730,13 @@ int s1ap_eNB_handle_s1_path_switch_request_failure(uint32_t assoc_
// TODO continue
return 0;
}
static
int s1ap_eNB_handle_s1_ENDC_e_rab_modification_confirm(uint32_t assoc_id,
uint32_t stream,
S1AP_S1AP_PDU_t *pdu){
LOG_W(S1AP, "Implementation of S1AP E-RAB Modification confirm handler is pending...\n");
return 0;
}
openair3/S1AP/s1ap_eNB_nas_procedures.c
+143
View File
@@ -1620,3 +1620,146 @@ int s1ap_eNB_path_switch_req(instance_t instance,
return ret;
}
//-----------------------------------------------------------------------------
/*
* eNB generate a S1 E_RAB Modification Indication towards MME
*/
int s1ap_eNB_generate_E_RAB_Modification_Indication(
instance_t instance,
s1ap_e_rab_modification_ind_t *e_rab_modification_ind)
//-----------------------------------------------------------------------------
{
struct s1ap_eNB_ue_context_s *ue_context_p = NULL;
S1AP_S1AP_PDU_t pdu;
S1AP_E_RABModificationIndication_t *out = NULL;
S1AP_E_RABModificationIndicationIEs_t *ie = NULL;
S1AP_E_RABToBeModifiedItemBearerModInd_t *E_RAB_ToBeModifiedItem_BearerModInd = NULL;
S1AP_E_RABToBeModifiedItemBearerModIndIEs_t *E_RAB_ToBeModifiedItem_BearerModInd_IEs = NULL;
S1AP_E_RABNotToBeModifiedItemBearerModInd_t *E_RAB_NotToBeModifiedItem_BearerModInd = NULL;
S1AP_E_RABNotToBeModifiedItemBearerModIndIEs_t *E_RAB_NotToBeModifiedItem_BearerModInd_IEs = NULL;
s1ap_eNB_instance_t *s1ap_eNB_instance_p = NULL;
s1ap_eNB_instance_p = s1ap_eNB_get_instance(instance);
uint8_t *buffer = NULL;
uint32_t len = 0;
int ret = 0;
DevAssert(s1ap_eNB_instance_p != NULL);
DevAssert(e_rab_modification_ind != NULL);
int num_e_rabs_tobemodified = e_rab_modification_ind->nb_of_e_rabs_tobemodified;
int num_e_rabs_nottobemodified = e_rab_modification_ind->nb_of_e_rabs_nottobemodified;
uint32_t CSG_id = 0;
/* Prepare the S1AP message to encode */
memset(&pdu, 0, sizeof(pdu));
pdu.present = S1AP_S1AP_PDU_PR_initiatingMessage;
pdu.choice.initiatingMessage.procedureCode = S1AP_ProcedureCode_id_E_RABModificationIndication;
pdu.choice.initiatingMessage.criticality = S1AP_Criticality_reject;
pdu.choice.initiatingMessage.value.present = S1AP_InitiatingMessage__value_PR_E_RABModificationIndication;
out = &pdu.choice.initiatingMessage.value.choice.E_RABModificationIndication;
/* mandatory */
ie = (S1AP_E_RABModificationIndicationIEs_t *)calloc(1, sizeof(S1AP_E_RABModificationIndicationIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_E_RABModificationIndicationIEs__value_PR_MME_UE_S1AP_ID;
ie->value.choice.MME_UE_S1AP_ID = e_rab_modification_ind->mme_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
ie = (S1AP_E_RABModificationIndicationIEs_t *)calloc(1, sizeof(S1AP_E_RABModificationIndicationIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_E_RABModificationIndicationIEs__value_PR_ENB_UE_S1AP_ID;
ie->value.choice.ENB_UE_S1AP_ID = e_rab_modification_ind->eNB_ue_s1ap_id;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
//E-RABs to be modified list
ie = (S1AP_E_RABModificationIndicationIEs_t *)calloc(1, sizeof(S1AP_E_RABModificationIndicationIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_E_RABToBeModifiedListBearerModInd;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_E_RABModificationIndicationIEs__value_PR_E_RABToBeModifiedListBearerModInd;
//The following two for-loops here will probably need to change. We should do a different type of search
for(int i=0; i<num_e_rabs_tobemodified; i++){
E_RAB_ToBeModifiedItem_BearerModInd_IEs = (S1AP_E_RABToBeModifiedItemBearerModIndIEs_t *)calloc(1,sizeof(S1AP_E_RABToBeModifiedItemBearerModIndIEs_t));
E_RAB_ToBeModifiedItem_BearerModInd_IEs->id = S1AP_ProtocolIE_ID_id_E_RABToBeModifiedItemBearerModInd;
E_RAB_ToBeModifiedItem_BearerModInd_IEs->criticality = S1AP_Criticality_reject;
E_RAB_ToBeModifiedItem_BearerModInd_IEs->value.present = S1AP_E_RABToBeModifiedItemBearerModIndIEs__value_PR_E_RABToBeModifiedItemBearerModInd;
E_RAB_ToBeModifiedItem_BearerModInd = &E_RAB_ToBeModifiedItem_BearerModInd_IEs->value.choice.E_RABToBeModifiedItemBearerModInd;
{
E_RAB_ToBeModifiedItem_BearerModInd->e_RAB_ID = e_rab_modification_ind->e_rabs_tobemodified[i].e_rab_id;
E_RAB_ToBeModifiedItem_BearerModInd->transportLayerAddress.size = e_rab_modification_ind->e_rabs_tobemodified[i].eNB_addr.length/8;
E_RAB_ToBeModifiedItem_BearerModInd->transportLayerAddress.bits_unused = e_rab_modification_ind->e_rabs_tobemodified[i].eNB_addr.length%8;
E_RAB_ToBeModifiedItem_BearerModInd->transportLayerAddress.buf = calloc(1, E_RAB_ToBeModifiedItem_BearerModInd->transportLayerAddress.size);
memcpy (E_RAB_ToBeModifiedItem_BearerModInd->transportLayerAddress.buf, e_rab_modification_ind->e_rabs_tobemodified[i].eNB_addr.buffer,
E_RAB_ToBeModifiedItem_BearerModInd->transportLayerAddress.size);
INT32_TO_OCTET_STRING(e_rab_modification_ind->e_rabs_tobemodified[i].gtp_teid, &E_RAB_ToBeModifiedItem_BearerModInd->dL_GTP_TEID);
}
ASN_SEQUENCE_ADD(&ie->value.choice.E_RABToBeModifiedListBearerModInd.list, E_RAB_ToBeModifiedItem_BearerModInd_IEs);
}
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
//E-RABs NOT to be modified list
ie = (S1AP_E_RABModificationIndicationIEs_t *)calloc(1, sizeof(S1AP_E_RABModificationIndicationIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_E_RABNotToBeModifiedListBearerModInd;
ie->criticality = S1AP_Criticality_reject;
if(num_e_rabs_nottobemodified > 0) {
ie->value.present = S1AP_E_RABModificationIndicationIEs__value_PR_E_RABNotToBeModifiedListBearerModInd;
for(int i=0; i<num_e_rabs_nottobemodified; i++){
E_RAB_NotToBeModifiedItem_BearerModInd_IEs = (S1AP_E_RABNotToBeModifiedItemBearerModIndIEs_t *)calloc(1,sizeof(S1AP_E_RABNotToBeModifiedItemBearerModIndIEs_t));
E_RAB_NotToBeModifiedItem_BearerModInd_IEs->id = S1AP_ProtocolIE_ID_id_E_RABNotToBeModifiedItemBearerModInd;
E_RAB_NotToBeModifiedItem_BearerModInd_IEs->criticality = S1AP_Criticality_reject;
E_RAB_NotToBeModifiedItem_BearerModInd_IEs->value.present = S1AP_E_RABNotToBeModifiedItemBearerModIndIEs__value_PR_E_RABNotToBeModifiedItemBearerModInd;
E_RAB_NotToBeModifiedItem_BearerModInd = &E_RAB_NotToBeModifiedItem_BearerModInd_IEs->value.choice.E_RABNotToBeModifiedItemBearerModInd;
{
E_RAB_NotToBeModifiedItem_BearerModInd->e_RAB_ID = e_rab_modification_ind->e_rabs_nottobemodified[i].e_rab_id;
E_RAB_NotToBeModifiedItem_BearerModInd->transportLayerAddress.size = e_rab_modification_ind->e_rabs_nottobemodified[i].eNB_addr.length/8;
E_RAB_NotToBeModifiedItem_BearerModInd->transportLayerAddress.bits_unused = e_rab_modification_ind->e_rabs_nottobemodified[i].eNB_addr.length%8;
E_RAB_NotToBeModifiedItem_BearerModInd->transportLayerAddress.buf =
calloc(1, E_RAB_NotToBeModifiedItem_BearerModInd->transportLayerAddress.size);
memcpy (E_RAB_NotToBeModifiedItem_BearerModInd->transportLayerAddress.buf, e_rab_modification_ind->e_rabs_nottobemodified[i].eNB_addr.buffer,
E_RAB_NotToBeModifiedItem_BearerModInd->transportLayerAddress.size);
INT32_TO_OCTET_STRING(e_rab_modification_ind->e_rabs_nottobemodified[i].gtp_teid, &E_RAB_NotToBeModifiedItem_BearerModInd->dL_GTP_TEID);
}
ASN_SEQUENCE_ADD(&ie->value.choice.E_RABNotToBeModifiedListBearerModInd.list, E_RAB_NotToBeModifiedItem_BearerModInd_IEs);
}
}
else
ie->value.present = S1AP_E_RABModificationIndicationIEs__value_PR_NOTHING;
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
ie = (S1AP_E_RABModificationIndicationIEs_t *)calloc(1, sizeof(S1AP_E_RABModificationIndicationIEs_t));
ie->id = S1AP_ProtocolIE_ID_id_CSGMembershipInfo;
ie->criticality = S1AP_Criticality_reject;
ie->value.present = S1AP_E_RABModificationIndicationIEs__value_PR_CSGMembershipInfo;
ie->value.choice.CSGMembershipInfo.cSGMembershipStatus = S1AP_CSGMembershipStatus_member;
INT32_TO_BIT_STRING(CSG_id, &ie->value.choice.CSGMembershipInfo.cSG_Id);
ASN_SEQUENCE_ADD(&out->protocolIEs.list, ie);
if (s1ap_eNB_encode_pdu(&pdu, &buffer, &len) < 0) {
S1AP_ERROR("Failed to encode S1 setup request\n");
return -1;
}
/* Non UE-Associated signalling -> stream = 0 */
s1ap_eNB_itti_send_sctp_data_req(s1ap_eNB_instance_p->instance, ue_context_p->mme_ref->assoc_id, buffer, len, 0);
return ret;
}
openair3/S1AP/s1ap_eNB_nas_procedures.h
+4
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@@ -52,4 +52,8 @@ int s1ap_eNB_e_rab_release_resp(instance_t instance,
int s1ap_eNB_path_switch_req(instance_t instance,
s1ap_path_switch_req_t *path_switch_req_p);
int s1ap_eNB_generate_E_RAB_Modification_Indication(
instance_t instance, s1ap_e_rab_modification_ind_t *e_rab_modification_ind);
#endif /* S1AP_ENB_NAS_PROCEDURES_H_ */