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Select AMF by PLMN ID when no other ue_identity.presenceMask is present and/or matching

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The mask could be present, .e.g not zero, but the selection of the AMF could
fail. This would lead to a skipping the selection of the AMF by PLMN ID,
which is the last option when no UE identity is present and/or matching.
This commit is contained in:
Guido Casati
2025-06-10 10:05:44 +02:00
parent 627e60f5bd
commit 90230078b4
1 changed files with 16 additions and 14 deletions
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openair3/NGAP/ngap_gNB_nas_procedures.c
+16 -14
View File
@@ -122,24 +122,26 @@ static ngap_gNB_amf_data_t *select_amf(ngap_gNB_instance_t *instance_p, const ng
}
// No UE identity (5G-S-TMSI or GUAMI) is present
if (msg->ue_identity.presenceMask == 0) {
// Select the AMF based on the selected PLMN identity received through RRCSetupComplete
amf = ngap_gNB_nnsf_select_amf_by_plmn_id(instance_p, msg->establishment_cause, msg->plmn);
// Select the AMF based on the selected PLMN identity received through RRCSetupComplete
amf = ngap_gNB_nnsf_select_amf_by_plmn_id(instance_p, msg->establishment_cause, msg->plmn);
if (amf) {
NGAP_INFO("UE %d: Chose AMF '%s' (assoc_id %d) through selected PLMN MCC=%03d MNC=%0*d\n",
msg->gNB_ue_ngap_id,
amf->amf_name,
amf->assoc_id,
msg->plmn.mcc,
msg->plmn.mnc_digit_length,
msg->plmn.mnc);
return amf;
} else {
// Select the AMF with the highest capacity
amf = ngap_gNB_nnsf_select_amf(instance_p, msg->establishment_cause);
if (amf) {
NGAP_INFO("UE %d: Chose AMF '%s' (assoc_id %d) through selected PLMN MCC %d MNC %d\n",
NGAP_INFO("UE %d: Chose AMF '%s' (assoc_id %d) through highest relative capacity\n",
msg->gNB_ue_ngap_id,
amf->amf_name,
amf->assoc_id,
msg->plmn.mcc,
msg->plmn.mnc);
amf->assoc_id);
return amf;
} else {
// Select the AMF with the highest capacity
amf = ngap_gNB_nnsf_select_amf(instance_p, msg->establishment_cause);
if (amf) {
NGAP_INFO("UE %d: Chose AMF '%s' (assoc_id %d) through highest relative capacity\n", msg->gNB_ue_ngap_id, amf->amf_name, amf->assoc_id);
return amf;
}
}
}