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[AMF] Fix crash in gmm_state_de_registered due to invalid state handling (#4082)

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Problem
-------
AMF was crashing several times per day when multiple UEs were connecting,
sending data, and disconnecting. The crash occurred in
gmm_state_de_registered() with the following log:

    FATAL: Invalid state [2]
    FATAL: gmm_state_de_registered: should not be reached.

This was triggered by network-initiated deregistration scenarios that were
not explicitly handled in the FSM, causing the AMF to enter an unexpected
state and abort.
This commit is contained in:
Sukchan Lee
2025-09-25 14:35:48 +09:00
parent be765fe2b0
commit cb1f45d2d8
1 changed files with 344 additions and 91 deletions
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435
src/amf/gmm-sm.c
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@@ -246,13 +246,12 @@ void gmm_state_de_registered(ogs_fsm_t *s, amf_event_t *e)
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
} else if (PCF_AM_POLICY_ASSOCIATED(amf_ue)) {
r = amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NPCF_AM_POLICY_CONTROL,
NULL,
amf_npcf_am_policy_control_build_delete,
amf_ue, state, NULL);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
r = amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NPCF_AM_POLICY_CONTROL, NULL,
amf_npcf_am_policy_control_build_delete,
amf_ue, state, NULL);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
}
break;
@@ -267,6 +266,8 @@ void gmm_state_de_registered(ogs_fsm_t *s, amf_event_t *e)
ogs_assert(sbi_message);
state = e->h.sbi.state;
xact_count = amf_sess_xact_count(amf_ue);
SWITCH(sbi_message->h.service.name)
CASE(OGS_SBI_SERVICE_NAME_NAUSF_AUTH)
SWITCH(sbi_message->h.resource.component[0])
@@ -293,6 +294,57 @@ void gmm_state_de_registered(ogs_fsm_t *s, amf_event_t *e)
ogs_error("[%s] Ignore SBI message", amf_ue->suci);
break;
CASE(OGS_SBI_HTTP_METHOD_DELETE)
/*
* gmm_state_de_registered()
*
* - AMF_UE_INITIATED_DE_REGISTERED
* 1. PDU session establishment request
* 2. PDUSessionResourceSetupRequest +
* PDU session establishment accept
* 3. PDUSessionResourceSetupResponse
* 4. Authentication Result Removal
* 5. AM_Policy_Association_Termination
* 6. Deregistration request
* 7. UEContextReleaseCommand
* 8. UEContextReleaseComplete
*
* - AMF_RELEASE_SM_CONTEXT_NO_STATE
* 1. PDU session release request
* 2. PDUSessionResourceReleaseCommand +
* PDU session release command
* 3. PDUSessionResourceReleaseREsponse
* 4. PDU session release complete
* 5. Authentication Result Removal
* 6. AM_Policy_Association_Termination
* 7. Deregistration request
* 8. UEContextReleaseCommand
* 9. UEContextReleaseComplete
*
* - AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED
* 1. Implicit Timer Expiration
* 2. UDM_SDM_Unsubscribe
* 3. UDM_UECM_Deregisration
* 4. PDU session release request
* 5. PDUSessionResourceReleaseCommand +
* PDU session release command
* 6. PDUSessionResourceReleaseResponse
* 7. Authentication Result Removal
* 8. AM_Policy_Association_Termination
*
* - AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED
* 1. UDM_UECM_DeregistrationNotification
* 2. Deregistration request
* 3. UDM_SDM_Unsubscribe
* 4. UDM_UECM_Deregisration
* 5. PDU session release request
* 6. PDUSessionResourceReleaseCommand +
* PDU session release command
* 7. PDUSessionResourceReleaseResponse
* 8. Authentication Result Removal
* 9. AM_Policy_Association_Termination
* 10.Deregistration accept
* 11.Signalling Connecion Release
*/
CLEAR_5G_AKA_CONFIRMATION(amf_ue);
if (state == AMF_RELEASE_SM_CONTEXT_NO_STATE ||
@@ -317,8 +369,6 @@ void gmm_state_de_registered(ogs_fsm_t *s, amf_event_t *e)
state ==
AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED) {
xact_count = amf_sess_xact_count(amf_ue);
memset(&param, 0, sizeof(param));
param.ue_location = true;
param.ue_timezone = true;
@@ -380,14 +430,18 @@ void gmm_state_de_registered(ogs_fsm_t *s, amf_event_t *e)
SWITCH(sbi_message->h.method)
CASE(OGS_SBI_HTTP_METHOD_DELETE)
/*
* gmm_state_de_registered()
*
* - AMF_UE_INITIATED_DE_REGISTERED
* 1. PDU session establishment request
* 2. PDUSessionResourceSetupRequest +
* PDU session establishment accept
* 3. PDUSessionResourceSetupResponse
* 4. Deregistration request
* 5. UEContextReleaseCommand
* 6. UEContextReleaseComplete
* 4. Authentication Result Removal
* 5. AM_Policy_Association_Termination
* 6. Deregistration request
* 7. UEContextReleaseCommand
* 8. UEContextReleaseComplete
*
* - AMF_RELEASE_SM_CONTEXT_NO_STATE
* 1. PDU session release request
@@ -395,12 +449,41 @@ void gmm_state_de_registered(ogs_fsm_t *s, amf_event_t *e)
* PDU session release command
* 3. PDUSessionResourceReleaseREsponse
* 4. PDU session release complete
* 5. Deregistration request
* 6. UEContextReleaseCommand
* 7. UEContextReleaseComplete
* 5. Authentication Result Removal
* 6. AM_Policy_Association_Termination
* 7. Deregistration request
* 8. UEContextReleaseCommand
* 9. UEContextReleaseComplete
*
* - AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED
* 1. Implicit Timer Expiration
* 2. UDM_SDM_Unsubscribe
* 3. UDM_UECM_Deregisration
* 4. PDU session release request
* 5. PDUSessionResourceReleaseCommand +
* PDU session release command
* 6. PDUSessionResourceReleaseResponse
* 7. Authentication Result Removal
* 8. AM_Policy_Association_Termination
*
* - AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED
* 1. UDM_UECM_DeregistrationNotification
* 2. Deregistration request
* 3. UDM_SDM_Unsubscribe
* 4. UDM_UECM_Deregisration
* 5. PDU session release request
* 6. PDUSessionResourceReleaseCommand +
* PDU session release command
* 7. PDUSessionResourceReleaseResponse
* 8. Authentication Result Removal
* 9. AM_Policy_Association_Termination
* 10.Deregistration accept
* 11.Signalling Connecion Release
*/
if (state == AMF_RELEASE_SM_CONTEXT_NO_STATE ||
state == AMF_UE_INITIATED_DE_REGISTERED) {
state == AMF_UE_INITIATED_DE_REGISTERED ||
state == AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED ||
state == AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED) {
UDM_SDM_CLEAR(amf_ue);
r = amf_ue_sbi_discover_and_send(
@@ -444,33 +527,62 @@ void gmm_state_de_registered(ogs_fsm_t *s, amf_event_t *e)
CASE(OGS_SBI_HTTP_METHOD_PATCH)
SWITCH(sbi_message->h.resource.component[2])
CASE(OGS_SBI_RESOURCE_NAME_AMF_3GPP_ACCESS)
/*
* - AMF_UE_INITIATED_DE_REGISTERED
* 1. PDU session establishment request
* 2. PDUSessionResourceSetupRequest +
* PDU session establishment accept
* 3. PDUSessionResourceSetupResponse
* 4. Deregistration request
* 5. UEContextReleaseCommand
* 6. UEContextReleaseComplete
*
* - AMF_RELEASE_SM_CONTEXT_NO_STATE
* 1. PDU session release request
* 2. PDUSessionResourceReleaseCommand +
* PDU session release command
* 3. PDUSessionResourceReleaseREsponse
* 4. PDU session release complete
* 5. Deregistration request
* 6. UEContextReleaseCommand
* 7. UEContextReleaseComplete
*/
/*
* gmm_state_de_registered()
*
* - AMF_UE_INITIATED_DE_REGISTERED
* 1. PDU session establishment request
* 2. PDUSessionResourceSetupRequest +
* PDU session establishment accept
* 3. PDUSessionResourceSetupResponse
* 4. Authentication Result Removal
* 5. AM_Policy_Association_Termination
* 6. Deregistration request
* 7. UEContextReleaseCommand
* 8. UEContextReleaseComplete
*
* - AMF_RELEASE_SM_CONTEXT_NO_STATE
* 1. PDU session release request
* 2. PDUSessionResourceReleaseCommand +
* PDU session release command
* 3. PDUSessionResourceReleaseREsponse
* 4. PDU session release complete
* 5. Authentication Result Removal
* 6. AM_Policy_Association_Termination
* 7. Deregistration request
* 8. UEContextReleaseCommand
* 9. UEContextReleaseComplete
*
* - AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED
* 1. Implicit Timer Expiration
* 2. UDM_SDM_Unsubscribe
* 3. UDM_UECM_Deregisration
* 4. PDU session release request
* 5. PDUSessionResourceReleaseCommand +
* PDU session release command
* 6. PDUSessionResourceReleaseResponse
* 7. Authentication Result Removal
* 8. AM_Policy_Association_Termination
*
* - AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED
* 1. UDM_UECM_DeregistrationNotification
* 2. Deregistration request
* 3. UDM_SDM_Unsubscribe
* 4. UDM_UECM_Deregisration
* 5. PDU session release request
* 6. PDUSessionResourceReleaseCommand +
* PDU session release command
* 7. PDUSessionResourceReleaseResponse
* 8. Authentication Result Removal
* 9. AM_Policy_Association_Termination
* 10.Deregistration accept
* 11.Signalling Connecion Release
*/
if (state == AMF_RELEASE_SM_CONTEXT_NO_STATE ||
state == AMF_UE_INITIATED_DE_REGISTERED) {
if (CHECK_5G_AKA_CONFIRMATION(amf_ue)) {
r = amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NAUSF_AUTH,
NULL,
OGS_SBI_SERVICE_TYPE_NAUSF_AUTH, NULL,
amf_nausf_auth_build_authenticate_delete,
amf_ue, state, NULL);
ogs_expect(r == OGS_OK);
@@ -488,6 +600,39 @@ void gmm_state_de_registered(ogs_fsm_t *s, amf_event_t *e)
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
}
} else if (state ==
AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED ||
state ==
AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED) {
if (CHECK_5G_AKA_CONFIRMATION(amf_ue)) {
r = amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NAUSF_AUTH, NULL,
amf_nausf_auth_build_authenticate_delete,
amf_ue, state, NULL);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
} else {
memset(&param, 0, sizeof(param));
param.ue_location = true;
param.ue_timezone = true;
amf_sbi_send_release_all_sessions(
NULL, amf_ue, state, &param);
if (!AMF_SESSION_RELEASE_PENDING(amf_ue) &&
amf_sess_xact_count(amf_ue) == xact_count) {
if (PCF_AM_POLICY_ASSOCIATED(amf_ue)) {
r = amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NPCF_AM_POLICY_CONTROL,
NULL,
amf_npcf_am_policy_control_build_delete,
amf_ue, state, NULL);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
}
}
}
} else {
ogs_fatal("Invalid state [%d]", state);
ogs_assert_if_reached();
@@ -527,14 +672,18 @@ void gmm_state_de_registered(ogs_fsm_t *s, amf_event_t *e)
CASE(OGS_SBI_HTTP_METHOD_DELETE)
/*
* gmm_state_de_registered()
*
* - AMF_UE_INITIATED_DE_REGISTERED
* 1. PDU session establishment request
* 2. PDUSessionResourceSetupRequest +
* PDU session establishment accept
* 3. PDUSessionResourceSetupResponse
* 4. Deregistration request
* 5. UEContextReleaseCommand
* 6. UEContextReleaseComplete
* 4. Authentication Result Removal
* 5. AM_Policy_Association_Termination
* 6. Deregistration request
* 7. UEContextReleaseCommand
* 8. UEContextReleaseComplete
*
* - AMF_RELEASE_SM_CONTEXT_NO_STATE
* 1. PDU session release request
@@ -542,9 +691,36 @@ void gmm_state_de_registered(ogs_fsm_t *s, amf_event_t *e)
* PDU session release command
* 3. PDUSessionResourceReleaseREsponse
* 4. PDU session release complete
* 5. Deregistration request
* 6. UEContextReleaseCommand
* 7. UEContextReleaseComplete
* 5. Authentication Result Removal
* 6. AM_Policy_Association_Termination
* 7. Deregistration request
* 8. UEContextReleaseCommand
* 9. UEContextReleaseComplete
*
* - AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED
* 1. Implicit Timer Expiration
* 2. UDM_SDM_Unsubscribe
* 3. UDM_UECM_Deregisration
* 4. PDU session release request
* 5. PDUSessionResourceReleaseCommand +
* PDU session release command
* 6. PDUSessionResourceReleaseResponse
* 7. Authentication Result Removal
* 8. AM_Policy_Association_Termination
*
* - AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED
* 1. UDM_UECM_DeregistrationNotification
* 2. Deregistration request
* 3. UDM_SDM_Unsubscribe
* 4. UDM_UECM_Deregisration
* 5. PDU session release request
* 6. PDUSessionResourceReleaseCommand +
* PDU session release command
* 7. PDUSessionResourceReleaseResponse
* 8. Authentication Result Removal
* 9. AM_Policy_Association_Termination
* 10.Deregistration accept
* 11.Signalling Connecion Release
*/
if (state == AMF_RELEASE_SM_CONTEXT_NO_STATE ||
state == AMF_UE_INITIATED_DE_REGISTERED) {
@@ -553,6 +729,27 @@ void gmm_state_de_registered(ogs_fsm_t *s, amf_event_t *e)
ogs_assert(r != OGS_ERROR);
PCF_AM_POLICY_CLEAR(amf_ue);
} else if (state ==
AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED) {
ogs_warn("[%s] Implicit De-registered", amf_ue->supi);
OGS_FSM_TRAN(&amf_ue->sm,
&gmm_state_ue_context_will_remove);
} else if (state ==
AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED) {
ogs_warn("[%s] Explicit De-registered", amf_ue->supi);
amf_ue->explict_de_registered.sbi_done = true;
if (amf_ue->explict_de_registered.n1_done == true) {
r = ngap_send_ran_ue_context_release_command(
ran_ue_find_by_id(amf_ue->ran_ue_id),
NGAP_Cause_PR_misc,
NGAP_CauseMisc_om_intervention,
NGAP_UE_CTX_REL_UE_CONTEXT_REMOVE, 0);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
}
} else {
ogs_fatal("Invalid state [%d]", state);
ogs_assert_if_reached();
@@ -609,8 +806,6 @@ void gmm_state_de_registered(ogs_fsm_t *s, amf_event_t *e)
}
}
xact_count = amf_sess_xact_count(amf_ue);
memset(&param, 0, sizeof(param));
param.ue_location = true;
param.ue_timezone = true;
@@ -855,13 +1050,12 @@ void gmm_state_registered(ogs_fsm_t *s, amf_event_t *e)
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
} else if (PCF_AM_POLICY_ASSOCIATED(amf_ue)) {
r = amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NPCF_AM_POLICY_CONTROL,
NULL,
amf_npcf_am_policy_control_build_delete,
amf_ue, state, NULL);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
r = amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NPCF_AM_POLICY_CONTROL, NULL,
amf_npcf_am_policy_control_build_delete,
amf_ue, state, NULL);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
}
break;
@@ -904,6 +1098,57 @@ void gmm_state_registered(ogs_fsm_t *s, amf_event_t *e)
ogs_error("[%s] Ignore SBI message", amf_ue->suci);
break;
CASE(OGS_SBI_HTTP_METHOD_DELETE)
/*
* gmm_state_registered()
*
* - AMF_UE_INITIATED_DE_REGISTERED
* 1. PDU session establishment request
* 2. PDUSessionResourceSetupRequest +
* PDU session establishment accept
* 3. PDUSessionResourceSetupResponse
* 4. Authentication Result Removal
* 5. AM_Policy_Association_Termination
* 6. Deregistration request
* 7. UEContextReleaseCommand
* 8. UEContextReleaseComplete
*
* - AMF_RELEASE_SM_CONTEXT_NO_STATE
* 1. PDU session release request
* 2. PDUSessionResourceReleaseCommand +
* PDU session release command
* 3. PDUSessionResourceReleaseREsponse
* 4. PDU session release complete
* 5. Authentication Result Removal
* 6. AM_Policy_Association_Termination
* 7. Deregistration request
* 8. UEContextReleaseCommand
* 9. UEContextReleaseComplete
*
* - AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED
* 1. Implicit Timer Expiration
* 2. UDM_SDM_Unsubscribe
* 3. UDM_UECM_Deregisration
* 4. PDU session release request
* 5. PDUSessionResourceReleaseCommand +
* PDU session release command
* 6. PDUSessionResourceReleaseResponse
* 7. Authentication Result Removal
* 8. AM_Policy_Association_Termination
*
* - AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED
* 1. UDM_UECM_DeregistrationNotification
* 2. Deregistration request
* 3. UDM_SDM_Unsubscribe
* 4. UDM_UECM_Deregisration
* 5. PDU session release request
* 6. PDUSessionResourceReleaseCommand +
* PDU session release command
* 7. PDUSessionResourceReleaseResponse
* 8. Authentication Result Removal
* 9. AM_Policy_Association_Termination
* 10.Deregistration accept
* 11.Signalling Connecion Release
*/
CLEAR_5G_AKA_CONFIRMATION(amf_ue);
if (state == AMF_RELEASE_SM_CONTEXT_NO_STATE ||
@@ -928,8 +1173,6 @@ void gmm_state_registered(ogs_fsm_t *s, amf_event_t *e)
state ==
AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED) {
int xact_count = amf_sess_xact_count(amf_ue);
memset(&param, 0, sizeof(param));
param.ue_location = true;
param.ue_timezone = true;
@@ -991,6 +1234,8 @@ void gmm_state_registered(ogs_fsm_t *s, amf_event_t *e)
SWITCH(sbi_message->h.method)
CASE(OGS_SBI_HTTP_METHOD_DELETE)
/*
* gmm_state_registered()
*
* - AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED
* 1. Implicit Timer Expiration
* 2. UDM_SDM_Unsubscribe
@@ -999,7 +1244,8 @@ void gmm_state_registered(ogs_fsm_t *s, amf_event_t *e)
* 5. PDUSessionResourceReleaseCommand +
* PDU session release command
* 6. PDUSessionResourceReleaseResponse
* 7. AM_Policy_Association_Termination
* 7. Authentication Result Removal
* 8. AM_Policy_Association_Termination
*
* - AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED
* 1. UDM_UECM_DeregistrationNotification
@@ -1010,9 +1256,10 @@ void gmm_state_registered(ogs_fsm_t *s, amf_event_t *e)
* 6. PDUSessionResourceReleaseCommand +
* PDU session release command
* 7. PDUSessionResourceReleaseResponse
* 8. AM_Policy_Association_Termination
* 9. Deregistration accept
* 10. Signalling Connecion Release
* 8. Authentication Result Removal
* 9. AM_Policy_Association_Termination
* 10.Deregistration accept
* 11.Signalling Connecion Release
*/
if (state ==
AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED ||
@@ -1061,38 +1308,40 @@ void gmm_state_registered(ogs_fsm_t *s, amf_event_t *e)
CASE(OGS_SBI_HTTP_METHOD_PATCH)
SWITCH(sbi_message->h.resource.component[2])
CASE(OGS_SBI_RESOURCE_NAME_AMF_3GPP_ACCESS)
/*
* - AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED
* 1. Implicit Timer Expiration
* 2. UDM_SDM_Unsubscribe
* 3. UDM_UECM_Deregisration
* 4. Authentication Result Removal
* 5. PDU session release request
* 6. PDUSessionResourceReleaseCommand +
* PDU session release command
* 7. PDUSessionResourceReleaseResponse
* 8. AM_Policy_Association_Termination
*
* - AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED
* 1. UDM_UECM_DeregistrationNotification
* 2. Deregistration request
* 3. UDM_SDM_Unsubscribe
* 4. UDM_UECM_Deregisration
* 5. Authentication Result Removal
* 6. PDU session release request
* 7. PDUSessionResourceReleaseCommand +
* PDU session release command
* 8. PDUSessionResourceReleaseResponse
* 9. AM_Policy_Association_Termination
* 10. Deregistration accept
* 11. Signalling Connecion Release
*/
/*
* gmm_state_registered()
*
* - AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED
* 1. Implicit Timer Expiration
* 2. UDM_SDM_Unsubscribe
* 3. UDM_UECM_Deregisration
* 4. PDU session release request
* 5. PDUSessionResourceReleaseCommand +
* PDU session release command
* 6. PDUSessionResourceReleaseResponse
* 7. Authentication Result Removal
* 8. AM_Policy_Association_Termination
*
* - AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED
* 1. UDM_UECM_DeregistrationNotification
* 2. Deregistration request
* 3. UDM_SDM_Unsubscribe
* 4. UDM_UECM_Deregisration
* 5. PDU session release request
* 6. PDUSessionResourceReleaseCommand +
* PDU session release command
* 7. PDUSessionResourceReleaseResponse
* 8. Authentication Result Removal
* 9. AM_Policy_Association_Termination
* 10.Deregistration accept
* 11.Signalling Connecion Release
*/
if (state ==
AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED ||
state ==
AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED) {
if (amf_ue->confirmation_for_5g_aka.resource_uri) {
if (CHECK_5G_AKA_CONFIRMATION(amf_ue)) {
r = amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NAUSF_AUTH,
NULL,
@@ -1162,6 +1411,8 @@ void gmm_state_registered(ogs_fsm_t *s, amf_event_t *e)
CASE(OGS_SBI_HTTP_METHOD_DELETE)
/*
* gmm_state_registered()
*
* - AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED
* 1. Implicit Timer Expiration
* 2. UDM_SDM_Unsubscribe
@@ -1170,7 +1421,8 @@ void gmm_state_registered(ogs_fsm_t *s, amf_event_t *e)
* 5. PDUSessionResourceReleaseCommand +
* PDU session release command
* 6. PDUSessionResourceReleaseResponse
* 7. AM_Policy_Association_Termination
* 7. Authentication Result Removal
* 8. AM_Policy_Association_Termination
*
* - AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED
* 1. UDM_UECM_DeregistrationNotification
@@ -1181,9 +1433,10 @@ void gmm_state_registered(ogs_fsm_t *s, amf_event_t *e)
* 6. PDUSessionResourceReleaseCommand +
* PDU session release command
* 7. PDUSessionResourceReleaseResponse
* 8. AM_Policy_Association_Termination
* 9. Deregistration accept
* 10.Signalling Connecion Release
* 8. Authentication Result Removal
* 9. AM_Policy_Association_Termination
* 10.Deregistration accept
* 11.Signalling Connecion Release
*/
if (state == AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED) {
ogs_warn("[%s] Implicit De-registered", amf_ue->supi);