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Refactor handling of NGAP UE Context in ngap_gNB_handle_nas_first_req

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this commit is refactoring the function ngap_gNB_handle_nas_first_req
to (1) fill first a local instance of ngap_gNB_ue_context_t and then
(2) pass it to ngap_store_ue_context which will allocate memory
for the instance to store in ngap
This commit is contained in:
Guido Casati
2025-03-12 14:53:20 +01:00
parent 9d951b109f
commit eb4cd38577
3 changed files with 21 additions and 17 deletions
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31
openair3/NGAP/ngap_gNB_nas_procedures.c
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@@ -165,16 +165,13 @@ int ngap_gNB_handle_nas_first_req(instance_t instance, ngap_nas_first_req_t *UEf
head->value.present = NGAP_InitiatingMessage__value_PR_InitialUEMessage;
NGAP_InitialUEMessage_t *out = &head->value.choice.InitialUEMessage;
/* Store the UE context in NGAP with:
* selected AMF, selected PLMN identity, gNB ID
* the unique gNB UE NGAP ID, used for the duration of the connectivity */
struct ngap_gNB_ue_context_s *ue_desc_p = calloc_or_fail(1, sizeof(*ue_desc_p));
DevAssert(ue_desc_p != NULL);
ue_desc_p->amf_ref = amf;
ue_desc_p->gNB_ue_ngap_id = UEfirstReq->gNB_ue_ngap_id;
ue_desc_p->gNB_instance = instance_p;
ue_desc_p->selected_plmn_identity = UEfirstReq->plmn;
ngap_store_ue_context(ue_desc_p);
/* Create and store NGAP UE context */
ngap_gNB_ue_context_t ue_desc_p = {
.amf_ref = amf,
.gNB_ue_ngap_id = UEfirstReq->gNB_ue_ngap_id,
.gNB_instance = instance_p,
.selected_plmn_identity = UEfirstReq->plmn,
};
// RAN UE NGAP ID (M)
{
@@ -182,7 +179,7 @@ int ngap_gNB_handle_nas_first_req(instance_t instance, ngap_nas_first_req_t *UEf
ie->id = NGAP_ProtocolIE_ID_id_RAN_UE_NGAP_ID;
ie->criticality = NGAP_Criticality_reject;
ie->value.present = NGAP_InitialUEMessage_IEs__value_PR_RAN_UE_NGAP_ID;
ie->value.choice.RAN_UE_NGAP_ID = ue_desc_p->gNB_ue_ngap_id;
ie->value.choice.RAN_UE_NGAP_ID = ue_desc_p.gNB_ue_ngap_id;
}
/* NAS-PDU (M): transferred transparently */
@@ -208,7 +205,7 @@ int ngap_gNB_handle_nas_first_req(instance_t instance, ngap_nas_first_req_t *UEf
0, // Cell ID
&userinfo_nr_p->nR_CGI.nRCellIdentity);
plmn_id_t *plmn = &ue_desc_p->selected_plmn_identity;
plmn_id_t *plmn = &ue_desc_p.selected_plmn_identity;
MCC_MNC_TO_TBCD(plmn->mcc, plmn->mnc, plmn->mnc_digit_length, &userinfo_nr_p->nR_CGI.pLMNIdentity);
/* In case of network sharing,
@@ -255,7 +252,7 @@ int ngap_gNB_handle_nas_first_req(instance_t instance, ngap_nas_first_req_t *UEf
DevMessage("Failed to encode initial UE message\n");
/* Update the current NGAP UE state */
ue_desc_p->ue_state = NGAP_UE_WAITING_CSR;
ue_desc_p.ue_state = NGAP_UE_WAITING_CSR;
/* Assign a stream for this UE :
* From 3GPP 38.412 7)Transport layers:
* Within the SCTP association established between one AMF and gNB pair:
@@ -272,9 +269,13 @@ int ngap_gNB_handle_nas_first_req(instance_t instance, ngap_nas_first_req_t *UEf
if ((amf->nextstream == 0) && (amf->out_streams > 1)) {
amf->nextstream += 1;
}
ue_desc_p->tx_stream = amf->nextstream;
ue_desc_p.tx_stream = amf->nextstream;
/* Create and store UE context */
ngap_store_ue_context(&ue_desc_p);
/* Send encoded message over sctp */
ngap_gNB_itti_send_sctp_data_req(instance_p->instance, amf->assoc_id, buffer, length, ue_desc_p->tx_stream);
ngap_gNB_itti_send_sctp_data_req(instance_p->instance, amf->assoc_id, buffer, length, ue_desc_p.tx_stream);
return 0;
}