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[MME] SGsAP-PAGING-REQUEST: Improve handling of Service Indicator

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This commit is contained in:
Pau Espin Pedrol
2025-09-08 14:21:50 +02:00
committed by Sukchan Lee
parent 12eb5bbc3d
commit 0a045eeb12
1 changed files with 19 additions and 4 deletions
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23
src/mme/sgsap-handler.c
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@@ -499,7 +499,7 @@ void sgsap_handle_paging_request(mme_vlr_t *vlr, ogs_pkbuf_t *pkbuf)
int nas_mobile_identity_imsi_len = 0;
ogs_nas_lai_t *lai = NULL;
char vlr_name[SGSAP_IE_VLR_NAME_LEN] = { 0, };
uint8_t service_indicator = 0;
uint8_t *service_indicator = NULL;
ogs_assert(vlr);
ogs_assert(pkbuf);
@@ -533,7 +533,7 @@ void sgsap_handle_paging_request(mme_vlr_t *vlr, ogs_pkbuf_t *pkbuf)
lai = iter->value;
break;
case SGSAP_IE_SERVICE_INDICATOR_TYPE:
service_indicator = *((uint8_t*)(iter->value));
service_indicator = iter->value;
break;
default:
ogs_warn("Invalid Type [%d]", iter->type);
@@ -555,6 +555,12 @@ void sgsap_handle_paging_request(mme_vlr_t *vlr, ogs_pkbuf_t *pkbuf)
goto paging_reject;
}
if (!service_indicator) {
ogs_error("No Service indicator");
sgs_cause = SGSAP_SGS_CAUSE_MISSING_MANDATORY_IE;
goto paging_reject;
}
if (nas_mobile_identity_imsi->type == OGS_NAS_MOBILE_IDENTITY_IMSI) {
ogs_nas_eps_imsi_to_bcd(nas_mobile_identity_imsi,
@@ -571,8 +577,17 @@ void sgsap_handle_paging_request(mme_vlr_t *vlr, ogs_pkbuf_t *pkbuf)
goto paging_reject;
}
ogs_assert(service_indicator);
mme_ue->service_indicator = service_indicator;
switch (*service_indicator) {
case SGSAP_CS_CALL_SERVICE_INDICATOR:
case SGSAP_SMS_SERVICE_INDICATOR:
mme_ue->service_indicator = *service_indicator;
break;
default:
/* 3GPP TS 29.118 9.4.17: Other vals "shall not be sent in this version
* of the protocol. If received, shall be treated as '00000001'" */
mme_ue->service_indicator = SGSAP_CS_CALL_SERVICE_INDICATOR;
break;
}
ogs_debug(" IMSI[%s]", mme_ue->imsi_bcd);
ogs_debug(" VLR_NAME[%s]", vlr_name);