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[AMF] Network-Initiated Deregister (#2014, #2021) 

Fixed a bug network-initiated implicit/explict deregistration
This commit is contained in:
Sukchan Lee 2023-02-04 20:43:31 +09:00
parent 5f9b941d25
commit 8a92c7e219
7 changed files with 740 additions and 150 deletions
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5
src/amf/context.h
View File

@ -404,6 +404,8 @@ struct amf_ue_s {
} handover;
/* SubscriptionId of Subscription to Data Change Notification to UDM */
#define UDM_SDM_SUBSCRIBED(__aMF) \
((__aMF) && ((__aMF)->data_change_subscription_id))
char *data_change_subscription_id;
struct {
@ -777,6 +779,9 @@ void amf_sbi_select_nf(
int amf_sess_xact_count(amf_ue_t *amf_ue);
int amf_sess_xact_state_count(amf_ue_t *amf_ue, int state);
#define AMF_SESSION_RELEASE_PENDING(__aMF) \
(amf_ue_have_session_release_pending(__aMF) == true)
#define PDU_RES_SETUP_REQ_TRANSFER_NEEDED(__aMF) \
(amf_pdu_res_setup_req_transfer_needed(__aMF) == true)
bool amf_pdu_res_setup_req_transfer_needed(amf_ue_t *amf_ue);

31
src/amf/gmm-handler.c
View File

@ -646,7 +646,7 @@ ogs_nas_5gmm_cause_t gmm_handle_service_update(amf_ue_t *amf_ue,
int gmm_handle_deregistration_request(amf_ue_t *amf_ue,
ogs_nas_5gs_deregistration_request_from_ue_t *deregistration_request)
{
int r;
int r, state, xact_count = 0;
ogs_nas_de_registration_type_t *de_registration_type = NULL;
ogs_assert(amf_ue);
@ -690,13 +690,30 @@ int gmm_handle_deregistration_request(amf_ue_t *amf_ue,
ogs_info("[%s] SUCI", amf_ue->suci);
amf_sbi_send_release_all_sessions(
amf_ue, AMF_RELEASE_SM_CONTEXT_NO_STATE);
xact_count = amf_sess_xact_count(amf_ue);
if (ogs_list_count(&amf_ue->sess_list) == 0) {
r = nas_5gs_send_de_registration_accept(amf_ue);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
state = AMF_UE_INITIATED_DE_REGISTERED;
amf_sbi_send_release_all_sessions(amf_ue, state);
if (!AMF_SESSION_RELEASE_PENDING(amf_ue) &&
amf_sess_xact_count(amf_ue) == xact_count) {
if (UDM_SDM_SUBSCRIBED(amf_ue)) {
ogs_assert(true == amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NUDM_SDM, NULL,
amf_nudm_sdm_build_subscription_delete,
amf_ue, state, NULL));
} else if (PCF_AM_POLICY_ASSOCIATED(amf_ue)) {
ogs_assert(true ==
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));
} else {
r = nas_5gs_send_de_registration_accept(amf_ue);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
}
}
return OGS_OK;

553
src/amf/gmm-sm.c
View File

@ -183,6 +183,75 @@ void gmm_state_de_registered(ogs_fsm_t *s, amf_event_t *e)
END
break;
CASE(OGS_SBI_SERVICE_NAME_NUDM_SDM)
if ((sbi_message->res_status != OGS_SBI_HTTP_STATUS_OK) &&
(sbi_message->res_status != OGS_SBI_HTTP_STATUS_CREATED) &&
(sbi_message->res_status != OGS_SBI_HTTP_STATUS_NO_CONTENT)) {
ogs_error("[%s] HTTP response error [%d]",
amf_ue->supi, sbi_message->res_status);
break;
}
SWITCH(sbi_message->h.resource.component[1])
CASE(OGS_SBI_RESOURCE_NAME_AM_DATA)
CASE(OGS_SBI_RESOURCE_NAME_SMF_SELECT_DATA)
CASE(OGS_SBI_RESOURCE_NAME_UE_CONTEXT_IN_SMF_DATA)
ogs_warn("[%s] Ignore SBI message", amf_ue->supi);
break;
CASE(OGS_SBI_RESOURCE_NAME_SDM_SUBSCRIPTIONS)
SWITCH(sbi_message->h.method)
CASE(OGS_SBI_HTTP_METHOD_DELETE)
/*
* - 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
*/
if (state == AMF_RELEASE_SM_CONTEXT_NO_STATE ||
state == AMF_UE_INITIATED_DE_REGISTERED) {
if (amf_ue->data_change_subscription_id) {
ogs_free(amf_ue->data_change_subscription_id);
amf_ue->data_change_subscription_id = NULL;
}
ogs_assert(true ==
amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NUDM_UECM, NULL,
amf_nudm_uecm_build_registration_delete,
amf_ue, state, NULL));
} else {
ogs_fatal("Invalid state [%d]", state);
ogs_assert_if_reached();
}
break;
DEFAULT
ogs_warn("[%s] Ignore invalid HTTP method [%s]",
amf_ue->suci, sbi_message->h.method);
END
break;
DEFAULT
ogs_error("Invalid resource name [%s]",
sbi_message->h.resource.component[1]);
ogs_assert_if_reached();
END
break;
CASE(OGS_SBI_SERVICE_NAME_NUDM_UECM)
if (sbi_message->res_status != OGS_SBI_HTTP_STATUS_CREATED &&
sbi_message->res_status != OGS_SBI_HTTP_STATUS_NO_CONTENT &&
@ -201,31 +270,43 @@ 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)
if (amf_ue->data_change_subscription_id) {
ogs_free(amf_ue->data_change_subscription_id);
amf_ue->data_change_subscription_id = NULL;
}
if (state ==
AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED ||
state ==
AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED) {
amf_sbi_send_release_all_sessions(amf_ue, state);
if ((ogs_list_count(&amf_ue->sess_list) == 0) &&
(PCF_AM_POLICY_ASSOCIATED(amf_ue))) {
/*
* - 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
*/
if (state == AMF_RELEASE_SM_CONTEXT_NO_STATE ||
state == AMF_UE_INITIATED_DE_REGISTERED) {
if (PCF_AM_POLICY_ASSOCIATED(amf_ue)) {
ogs_assert(true ==
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));
} else {
r = nas_5gs_send_de_registration_accept(amf_ue);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
}
} else {
ogs_assert(true ==
amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NAUSF_AUTH, NULL,
amf_nausf_auth_build_authenticate_delete,
amf_ue, state, NULL));
ogs_fatal("Invalid state [%d]", state);
ogs_assert_if_reached();
}
break;
DEFAULT
@ -248,44 +329,6 @@ void gmm_state_de_registered(ogs_fsm_t *s, amf_event_t *e)
END
break;
CASE(OGS_SBI_SERVICE_NAME_NUDM_SDM)
if ((sbi_message->res_status != OGS_SBI_HTTP_STATUS_OK) &&
(sbi_message->res_status != OGS_SBI_HTTP_STATUS_CREATED) &&
(sbi_message->res_status != OGS_SBI_HTTP_STATUS_NO_CONTENT)) {
ogs_error("[%s] HTTP response error [%d]",
amf_ue->supi, sbi_message->res_status);
break;
}
SWITCH(sbi_message->h.resource.component[1])
CASE(OGS_SBI_RESOURCE_NAME_AM_DATA)
CASE(OGS_SBI_RESOURCE_NAME_SMF_SELECT_DATA)
CASE(OGS_SBI_RESOURCE_NAME_UE_CONTEXT_IN_SMF_DATA)
ogs_warn("[%s] Ignore SBI message", amf_ue->supi);
break;
CASE(OGS_SBI_RESOURCE_NAME_SDM_SUBSCRIPTIONS)
SWITCH(sbi_message->h.method)
CASE(OGS_SBI_HTTP_METHOD_DELETE)
ogs_assert(true ==
amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NUDM_UECM, NULL,
amf_nudm_uecm_build_registration_delete,
amf_ue, state, NULL));
break;
DEFAULT
ogs_warn("[%s] Ignore invalid HTTP method [%s]",
amf_ue->suci, sbi_message->h.method);
END
break;
DEFAULT
ogs_error("Invalid resource name [%s]",
sbi_message->h.resource.component[1]);
ogs_assert_if_reached();
END
break;
CASE(OGS_SBI_SERVICE_NAME_NPCF_AM_POLICY_CONTROL)
SWITCH(sbi_message->h.resource.component[0])
CASE(OGS_SBI_RESOURCE_NAME_POLICIES)
@ -295,33 +338,36 @@ void gmm_state_de_registered(ogs_fsm_t *s, amf_event_t *e)
break;
CASE(OGS_SBI_HTTP_METHOD_DELETE)
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(
amf_ue->ran_ue,
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 {
/*
* - 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
*/
if (state == AMF_RELEASE_SM_CONTEXT_NO_STATE ||
state == AMF_UE_INITIATED_DE_REGISTERED) {
r = nas_5gs_send_de_registration_accept(amf_ue);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
PCF_AM_POLICY_CLEAR(amf_ue);
} else {
ogs_fatal("Invalid state [%d]", state);
ogs_assert_if_reached();
}
break;
@ -351,7 +397,7 @@ void gmm_state_de_registered(ogs_fsm_t *s, amf_event_t *e)
void gmm_state_registered(ogs_fsm_t *s, amf_event_t *e)
{
int i, r;
int i, r, state, xact_count = 0;
amf_ue_t *amf_ue = NULL;
amf_sess_t *sess = NULL;
@ -429,6 +475,22 @@ void gmm_state_registered(ogs_fsm_t *s, amf_event_t *e)
}
break;
case AMF_TIMER_T3522:
if (amf_ue->t3522.retry_count >=
amf_timer_cfg(AMF_TIMER_T3522)->max_count) {
ogs_warn("Retransmission of Deregistration-Request failed. "
"Stop retransmission");
CLEAR_AMF_UE_TIMER(amf_ue->t3522);
OGS_FSM_TRAN(&amf_ue->sm, &gmm_state_exception);
} else {
amf_ue->t3522.retry_count++;
r = nas_5gs_send_de_registration_request(amf_ue,
OpenAPI_deregistration_reason_NULL, 0);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
}
break;
case AMF_TIMER_T3555:
if (amf_ue->t3555.retry_count >=
amf_timer_cfg(AMF_TIMER_T3555)->max_count) {
@ -518,13 +580,21 @@ void gmm_state_registered(ogs_fsm_t *s, amf_event_t *e)
ogs_info("[%s] Do Network-initiated De-register UE", amf_ue->supi);
ogs_assert(true == amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NUDM_SDM, NULL,
amf_nudm_sdm_build_subscription_delete,
amf_ue,
AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED, NULL));
state = AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED;
OGS_FSM_TRAN(s, &gmm_state_de_registered);
if (UDM_SDM_SUBSCRIBED(amf_ue)) {
ogs_assert(true == amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NUDM_SDM, NULL,
amf_nudm_sdm_build_subscription_delete,
amf_ue, state, NULL));
} else if (PCF_AM_POLICY_ASSOCIATED(amf_ue)) {
ogs_assert(true ==
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));
}
break;
default:
ogs_error("Unknown timer[%s:%d]",
@ -535,9 +605,298 @@ void gmm_state_registered(ogs_fsm_t *s, amf_event_t *e)
case OGS_EVENT_SBI_CLIENT:
sbi_message = e->h.sbi.message;
ogs_assert(sbi_message);
state = e->h.sbi.state;
ogs_error("Invalid service name [%s]", sbi_message->h.service.name);
ogs_assert_if_reached();
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])
CASE(OGS_SBI_RESOURCE_NAME_UE_AUTHENTICATIONS)
if (sbi_message->res_status != OGS_SBI_HTTP_STATUS_CREATED &&
sbi_message->res_status != OGS_SBI_HTTP_STATUS_OK &&
sbi_message->res_status != OGS_SBI_HTTP_STATUS_NO_CONTENT) {
if (sbi_message->res_status ==
OGS_SBI_HTTP_STATUS_NOT_FOUND) {
ogs_warn("[%s] Cannot find SUCI [%d]",
amf_ue->suci, sbi_message->res_status);
} else {
ogs_error("[%s] HTTP response error [%d]",
amf_ue->suci, sbi_message->res_status);
}
break;
}
SWITCH(sbi_message->h.method)
CASE(OGS_SBI_HTTP_METHOD_POST)
ogs_warn("[%s] Ignore SBI message", amf_ue->suci);
break;
CASE(OGS_SBI_HTTP_METHOD_PUT)
ogs_warn("[%s] Ignore SBI message", amf_ue->suci);
break;
CASE(OGS_SBI_HTTP_METHOD_DELETE)
if (amf_ue->confirmation_url_for_5g_aka)
ogs_free(amf_ue->confirmation_url_for_5g_aka);
amf_ue->confirmation_url_for_5g_aka = NULL;
break;
DEFAULT
ogs_error("[%s] Invalid HTTP method [%s]",
amf_ue->suci, sbi_message->h.method);
ogs_assert_if_reached();
END
break;
CASE(OGS_SBI_RESOURCE_NAME_5G_AKA)
CASE(OGS_SBI_RESOURCE_NAME_5G_AKA_CONFIRMATION)
CASE(OGS_SBI_RESOURCE_NAME_EAP_SESSION)
ogs_warn("[%s] Ignore SBI message", amf_ue->supi);
break;
DEFAULT
ogs_error("Invalid resource name [%s]",
sbi_message->h.resource.component[0]);
ogs_assert_if_reached();
END
break;
CASE(OGS_SBI_SERVICE_NAME_NUDM_SDM)
if ((sbi_message->res_status != OGS_SBI_HTTP_STATUS_OK) &&
(sbi_message->res_status != OGS_SBI_HTTP_STATUS_CREATED) &&
(sbi_message->res_status != OGS_SBI_HTTP_STATUS_NO_CONTENT)) {
ogs_error("[%s] HTTP response error [%d]",
amf_ue->supi, sbi_message->res_status);
break;
}
SWITCH(sbi_message->h.resource.component[1])
CASE(OGS_SBI_RESOURCE_NAME_AM_DATA)
CASE(OGS_SBI_RESOURCE_NAME_SMF_SELECT_DATA)
CASE(OGS_SBI_RESOURCE_NAME_UE_CONTEXT_IN_SMF_DATA)
ogs_warn("[%s] Ignore SBI message", amf_ue->supi);
break;
CASE(OGS_SBI_RESOURCE_NAME_SDM_SUBSCRIPTIONS)
SWITCH(sbi_message->h.method)
CASE(OGS_SBI_HTTP_METHOD_DELETE)
/*
* - 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. 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. AM_Policy_Association_Termination
* 9. Deregistration accept
* 10. Signalling Connecion Release
*/
if (state ==
AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED ||
state ==
AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED) {
if (amf_ue->data_change_subscription_id) {
ogs_free(amf_ue->data_change_subscription_id);
amf_ue->data_change_subscription_id = NULL;
}
ogs_assert(true ==
amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NUDM_UECM, NULL,
amf_nudm_uecm_build_registration_delete,
amf_ue, state, NULL));
} else {
ogs_fatal("Invalid state [%d]", state);
ogs_assert_if_reached();
}
break;
DEFAULT
ogs_warn("[%s] Ignore invalid HTTP method [%s]",
amf_ue->suci, sbi_message->h.method);
END
break;
DEFAULT
ogs_error("Invalid resource name [%s]",
sbi_message->h.resource.component[1]);
ogs_assert_if_reached();
END
break;
CASE(OGS_SBI_SERVICE_NAME_NUDM_UECM)
if (sbi_message->res_status != OGS_SBI_HTTP_STATUS_CREATED &&
sbi_message->res_status != OGS_SBI_HTTP_STATUS_NO_CONTENT &&
sbi_message->res_status != OGS_SBI_HTTP_STATUS_OK) {
ogs_error("[%s] HTTP response error [%d]",
amf_ue->supi, sbi_message->res_status);
break;
}
SWITCH(sbi_message->h.resource.component[1])
CASE(OGS_SBI_RESOURCE_NAME_REGISTRATIONS)
SWITCH(sbi_message->h.method)
CASE(OGS_SBI_HTTP_METHOD_PUT)
ogs_warn("[%s] Ignore SBI message", amf_ue->supi);
break;
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. PDU session release request
* 5. PDUSessionResourceReleaseCommand +
* PDU session release command
* 6. PDUSessionResourceReleaseResponse
* 7. 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. AM_Policy_Association_Termination
* 9. Deregistration accept
* 10. Signalling Connecion Release
*/
if (state ==
AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED ||
state ==
AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED) {
amf_sbi_send_release_all_sessions(amf_ue, state);
if (!AMF_SESSION_RELEASE_PENDING(amf_ue) &&
amf_sess_xact_count(amf_ue) == xact_count) {
if (PCF_AM_POLICY_ASSOCIATED(amf_ue)) {
ogs_assert(true ==
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));
}
}
} else {
ogs_fatal("Invalid state [%d]", state);
ogs_assert_if_reached();
}
break;
DEFAULT
ogs_warn("Ignoring invalid resource name [%s]",
sbi_message->h.resource.component[2]);
END
break;
DEFAULT
ogs_error("[%s] Invalid HTTP method [%s]",
amf_ue->suci, sbi_message->h.method);
ogs_assert_if_reached();
END
break;
DEFAULT
ogs_error("Invalid resource name [%s]",
sbi_message->h.resource.component[1]);
ogs_assert_if_reached();
END
break;
CASE(OGS_SBI_SERVICE_NAME_NPCF_AM_POLICY_CONTROL)
SWITCH(sbi_message->h.resource.component[0])
CASE(OGS_SBI_RESOURCE_NAME_POLICIES)
SWITCH(sbi_message->h.method)
CASE(OGS_SBI_HTTP_METHOD_POST)
ogs_warn("[%s] Ignore SBI message", amf_ue->suci);
break;
CASE(OGS_SBI_HTTP_METHOD_DELETE)
/*
* - 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. 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. AM_Policy_Association_Termination
* 9. Deregistration accept
* 10.Signalling Connecion Release
*/
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(
amf_ue->ran_ue,
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();
}
break;
DEFAULT
ogs_error("Unknown method [%s]", sbi_message->h.method);
ogs_assert_if_reached();
END
break;
DEFAULT
ogs_error("Invalid resource name [%s]",
sbi_message->h.resource.component[0]);
ogs_assert_if_reached();
END
break;
DEFAULT
ogs_error("Invalid service name [%s]", sbi_message->h.service.name);
ogs_assert_if_reached();
END
break;
default:
@ -652,7 +1011,8 @@ static void common_register_state(ogs_fsm_t *s, amf_event_t *e)
amf_sbi_send_release_all_sessions(
amf_ue, AMF_RELEASE_SM_CONTEXT_NO_STATE);
if (amf_sess_xact_count(amf_ue) == xact_count) {
if (ogs_list_count(&amf_ue->sess_list) == 0) {
ogs_assert(true ==
amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NAUSF_AUTH, NULL,
@ -733,7 +1093,9 @@ static void common_register_state(ogs_fsm_t *s, amf_event_t *e)
amf_sbi_send_release_all_sessions(
amf_ue, AMF_RELEASE_SM_CONTEXT_NO_STATE);
if (amf_sess_xact_count(amf_ue) == xact_count) {
if (!AMF_SESSION_RELEASE_PENDING(amf_ue) &&
amf_sess_xact_count(amf_ue) == xact_count) {
ogs_assert(true ==
amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NAUSF_AUTH, NULL,
@ -1461,6 +1823,8 @@ void gmm_state_initial_context_setup(ogs_fsm_t *s, amf_event_t *e)
h.type = e->nas.type;
xact_count = amf_sess_xact_count(amf_ue);
switch (nas_message->gmm.h.message_type) {
case OGS_NAS_5GS_REGISTRATION_COMPLETE:
ogs_info("[%s] Registration complete", amf_ue->supi);
@ -1544,7 +1908,9 @@ void gmm_state_initial_context_setup(ogs_fsm_t *s, amf_event_t *e)
amf_sbi_send_release_all_sessions(
amf_ue, AMF_RELEASE_SM_CONTEXT_NO_STATE);
if (amf_sess_xact_count(amf_ue) == xact_count) {
if (!AMF_SESSION_RELEASE_PENDING(amf_ue) &&
amf_sess_xact_count(amf_ue) == xact_count) {
ogs_assert(true ==
amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NAUSF_AUTH, NULL,
@ -1673,10 +2039,13 @@ void gmm_state_exception(ogs_fsm_t *s, amf_event_t *e)
AMF_UE_CLEAR_5GSM_MESSAGE(amf_ue);
CLEAR_AMF_UE_ALL_TIMERS(amf_ue);
xact_count = amf_sess_xact_count(amf_ue);
amf_sbi_send_release_all_sessions(
amf_ue, AMF_RELEASE_SM_CONTEXT_NO_STATE);
if (ogs_list_count(&amf_ue->sess_list) == 0) {
if (!AMF_SESSION_RELEASE_PENDING(amf_ue) &&
amf_sess_xact_count(amf_ue) == xact_count) {
r = ngap_send_amf_ue_context_release_command(amf_ue,
NGAP_Cause_PR_nas, NGAP_CauseNas_normal_release,
NGAP_UE_CTX_REL_UE_CONTEXT_REMOVE, 0);
@ -1771,7 +2140,9 @@ void gmm_state_exception(ogs_fsm_t *s, amf_event_t *e)
amf_sbi_send_release_all_sessions(
amf_ue, AMF_RELEASE_SM_CONTEXT_NO_STATE);
if (amf_sess_xact_count(amf_ue) == xact_count) {
if (!AMF_SESSION_RELEASE_PENDING(amf_ue) &&
amf_sess_xact_count(amf_ue) == xact_count) {
ogs_assert(true ==
amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NAUSF_AUTH, NULL,

100
src/amf/namf-handler.c
View File

@ -521,7 +521,7 @@ cleanup:
int amf_namf_callback_handle_dereg_notify(
ogs_sbi_stream_t *stream, ogs_sbi_message_t *recvmsg)
{
int r, status = OGS_SBI_HTTP_STATUS_NO_CONTENT;
int r, state, status = OGS_SBI_HTTP_STATUS_NO_CONTENT;
amf_ue_t *amf_ue = NULL;
@ -553,8 +553,14 @@ int amf_namf_callback_handle_dereg_notify(
goto cleanup;
}
if (DeregistrationData->access_type != OpenAPI_access_type_3GPP_ACCESS)
{
if (DeregistrationData->dereg_reason ==
OpenAPI_deregistration_reason_NULL) {
status = OGS_SBI_HTTP_STATUS_BAD_REQUEST;
ogs_error("[%s] No Deregistraion Reason ", amf_ue->supi);
goto cleanup;
}
if (DeregistrationData->access_type != OpenAPI_access_type_3GPP_ACCESS) {
status = OGS_SBI_HTTP_STATUS_BAD_REQUEST;
ogs_error("[%s] Deregistration access type not 3GPP", amf_ue->supi);
goto cleanup;
@ -572,6 +578,21 @@ int amf_namf_callback_handle_dereg_notify(
* Deregistration procedure. In this case, the AMF performs network requested PDU Session Release for any PDU
* session associated with non-emergency service as described in clause 4.3.4.
*/
/*
* - 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. AM_Policy_Association_Termination
* 9. Deregistration accept
* 10. Signalling Connecion Release
*/
if (CM_CONNECTED(amf_ue)) {
r = nas_5gs_send_de_registration_request(
amf_ue,
@ -580,24 +601,32 @@ int amf_namf_callback_handle_dereg_notify(
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
ogs_assert(true == amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NUDM_SDM, NULL,
amf_nudm_sdm_build_subscription_delete,
amf_ue,
AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED, NULL));
state = AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED;
} else if (CM_IDLE(amf_ue)) {
ogs_error("Not implemented : Use Implicit De-registration");
ogs_assert(true == amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NUDM_SDM, NULL,
amf_nudm_sdm_build_subscription_delete,
amf_ue,
AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED, NULL));
state = AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED;
} else {
ogs_fatal("Invalid State");
ogs_assert_if_reached();
}
if (UDM_SDM_SUBSCRIBED(amf_ue)) {
ogs_assert(true == amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NUDM_SDM, NULL,
amf_nudm_sdm_build_subscription_delete,
amf_ue, state, NULL));
} else if (PCF_AM_POLICY_ASSOCIATED(amf_ue)) {
ogs_assert(true ==
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));
}
cleanup:
memset(&sendmsg, 0, sizeof(sendmsg));
@ -799,8 +828,7 @@ static int update_ambr(OpenAPI_change_item_t *item_change,
int amf_namf_callback_handle_sdm_data_change_notify(
ogs_sbi_stream_t *stream, ogs_sbi_message_t *recvmsg)
{
int status = OGS_SBI_HTTP_STATUS_NO_CONTENT;
int r;
int r, state, status = OGS_SBI_HTTP_STATUS_NO_CONTENT;
amf_ue_t *amf_ue = NULL;
@ -880,6 +908,20 @@ int amf_namf_callback_handle_sdm_data_change_notify(
}
if (amf_ue_is_rat_restricted(amf_ue)) {
/*
* - 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. AM_Policy_Association_Termination
* 9. Deregistration accept
* 10. Signalling Connecion Release
*/
if (CM_CONNECTED(amf_ue)) {
r = nas_5gs_send_de_registration_request(
amf_ue,
@ -887,24 +929,32 @@ int amf_namf_callback_handle_sdm_data_change_notify(
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
ogs_assert(true == amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NUDM_SDM, NULL,
amf_nudm_sdm_build_subscription_delete,
amf_ue,
AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED, NULL));
state = AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED;
} else if (CM_IDLE(amf_ue)) {
ogs_error("Not implemented : Use Implicit De-registration");
ogs_assert(true == amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NUDM_SDM, NULL,
amf_nudm_sdm_build_subscription_delete,
amf_ue,
AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED, NULL));
state = AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED;
} else {
ogs_fatal("Invalid State");
ogs_assert_if_reached();
}
if (UDM_SDM_SUBSCRIBED(amf_ue)) {
ogs_assert(true == amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NUDM_SDM, NULL,
amf_nudm_sdm_build_subscription_delete,
amf_ue, state, NULL));
} else if (PCF_AM_POLICY_ASSOCIATED(amf_ue)) {
ogs_assert(true ==
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));
}
} else if (ambr_changed) {
ogs_pkbuf_t *ngapbuf;

156
src/amf/nsmf-handler.c
View File

@ -910,21 +910,110 @@ int amf_nsmf_pdusession_handle_release_sm_context(amf_sess_t *sess, int state)
/* Not reached here */
ogs_assert_if_reached();
} else if (state == AMF_RELEASE_SM_CONTEXT_NO_STATE ||
state == AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED ||
state == AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED) {
/* NO_STATE */
} else if (state == AMF_UE_INITIATED_DE_REGISTERED) {
if (OGS_FSM_CHECK(&amf_ue->sm, gmm_state_authentication)) {
ogs_assert(true ==
amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NAUSF_AUTH, NULL,
amf_nausf_auth_build_authenticate,
amf_ue, 0, NULL));
if (OGS_FSM_CHECK(&amf_ue->sm, gmm_state_de_registered)) {
/*
* 1. PDU session establishment request
* 2. PDUSessionResourceSetupRequest +
* PDU session establishment accept
* 3. PDUSessionResourceSetupResponse
* 4. Deregistration request
* 5. UEContextReleaseCommand
* 6. UEContextReleaseComplete
*/
if (UDM_SDM_SUBSCRIBED(amf_ue)) {
ogs_assert(true == amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NUDM_SDM, NULL,
amf_nudm_sdm_build_subscription_delete,
amf_ue, state, NULL));
} else if (PCF_AM_POLICY_ASSOCIATED(amf_ue)) {
ogs_assert(true ==
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));
} else {
r = nas_5gs_send_de_registration_accept(amf_ue);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
}
} else if (OGS_FSM_CHECK(&amf_ue->sm,
gmm_state_de_registered)) {
gmm_state_authentication)) {
ogs_fatal("Release SM Context in authentication");
ogs_assert_if_reached();
} else if (OGS_FSM_CHECK(
&amf_ue->sm, gmm_state_security_mode)) {
ogs_fatal("Release SM Context in security-mode");
ogs_assert_if_reached();
} else if (OGS_FSM_CHECK(&amf_ue->sm,
gmm_state_initial_context_setup)) {
ogs_fatal("Release SM Context in initial-context-setup");
ogs_assert_if_reached();
} else if (OGS_FSM_CHECK(&amf_ue->sm, gmm_state_registered)) {
ogs_fatal("Release SM Context in registered");
ogs_assert_if_reached();
} else if (OGS_FSM_CHECK(&amf_ue->sm, gmm_state_exception)) {
ogs_fatal("Release SM Context in exception");
ogs_assert_if_reached();
} else {
ogs_fatal("Release SM Context : INVALID STATE");
ogs_assert_if_reached();
}
} else if (state == AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED ||
state == AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED) {
if (OGS_FSM_CHECK(&amf_ue->sm, gmm_state_de_registered)) {
ogs_fatal("Release SM Context in de-registered");
ogs_assert_if_reached();
} else if (OGS_FSM_CHECK(&amf_ue->sm,
gmm_state_authentication)) {
ogs_fatal("Release SM Context in authentication");
ogs_assert_if_reached();
} else if (OGS_FSM_CHECK(
&amf_ue->sm, gmm_state_security_mode)) {
ogs_fatal("Release SM Context in security-mode");
ogs_assert_if_reached();
} else if (OGS_FSM_CHECK(&amf_ue->sm,
gmm_state_initial_context_setup)) {
ogs_fatal("Release SM Context in initial-context-setup");
ogs_assert_if_reached();
} else if (OGS_FSM_CHECK(&amf_ue->sm, gmm_state_registered)) {
/*
* 1. Network-Initiated Implict-Explicit De-Registered
* 5. Deregistration request
* 5. Deregistration accept
* 6. UEContextReleaseCommand
* 7. UEContextReleaseComplete
*/
if (UDM_SDM_SUBSCRIBED(amf_ue)) {
ogs_assert(true == amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NUDM_SDM, NULL,
amf_nudm_sdm_build_subscription_delete,
amf_ue, state, NULL));
} else if (PCF_AM_POLICY_ASSOCIATED(amf_ue)) {
ogs_assert(true ==
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));
}
} else if (OGS_FSM_CHECK(&amf_ue->sm, gmm_state_exception)) {
ogs_fatal("Release SM Context in exception");
ogs_assert_if_reached();
} else {
ogs_fatal("Release SM Context : INVALID STATE");
ogs_assert_if_reached();
}
} else if (state == AMF_RELEASE_SM_CONTEXT_NO_STATE) {
/* NO_STATE */
if (OGS_FSM_CHECK(&amf_ue->sm, gmm_state_de_registered)) {
/*
* 1. PDU session release request
* 2. PDUSessionResourceReleaseCommand +
@ -935,13 +1024,40 @@ int amf_nsmf_pdusession_handle_release_sm_context(amf_sess_t *sess, int state)
* 6. UEContextReleaseCommand
* 7. UEContextReleaseComplete
*/
if (UDM_SDM_SUBSCRIBED(amf_ue)) {
ogs_assert(true == amf_ue_sbi_discover_and_send(
OGS_SBI_SERVICE_TYPE_NUDM_SDM, NULL,
amf_nudm_sdm_build_subscription_delete,
amf_ue, state, NULL));
} else if (PCF_AM_POLICY_ASSOCIATED(amf_ue)) {
ogs_assert(true ==
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));
} else {
r = nas_5gs_send_de_registration_accept(amf_ue);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
}
} else if (OGS_FSM_CHECK(&amf_ue->sm,
gmm_state_authentication)) {
ogs_assert(true ==
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_SBI_SERVICE_TYPE_NAUSF_AUTH, NULL,
amf_nausf_auth_build_authenticate,
amf_ue, 0, NULL));
} else if (OGS_FSM_CHECK(
&amf_ue->sm, gmm_state_security_mode)) {
ogs_fatal("Release SM Context in security-mode");
ogs_assert_if_reached();
} else if (OGS_FSM_CHECK(&amf_ue->sm,
gmm_state_initial_context_setup)) {
ogs_fatal("Release SM Context in initial-context-setup");
ogs_assert_if_reached();
} else if (OGS_FSM_CHECK(&amf_ue->sm, gmm_state_registered)) {
/*
* 1. PDU session release request
@ -950,8 +1066,6 @@ int amf_nsmf_pdusession_handle_release_sm_context(amf_sess_t *sess, int state)
* 3. PDUSessionResourceReleaseREsponse
* 4. PDU session release complete
*
* No Deregistration request in the above step
*
* So, Nothing to do!
*/
} else if (OGS_FSM_CHECK(&amf_ue->sm, gmm_state_exception)) {
@ -967,14 +1081,6 @@ int amf_nsmf_pdusession_handle_release_sm_context(amf_sess_t *sess, int state)
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
} else if (OGS_FSM_CHECK(&amf_ue->sm,
gmm_state_initial_context_setup)) {
ogs_fatal("Release SM Context in initial-context-setup");
ogs_assert_if_reached();
} else if (OGS_FSM_CHECK(
&amf_ue->sm, gmm_state_security_mode)) {
ogs_fatal("Release SM Context in security-mode");
ogs_assert_if_reached();
} else {
ogs_fatal("Release SM Context : INVALID STATE");
ogs_assert_if_reached();

37
src/amf/sbi-path.c
View File

@ -495,3 +495,40 @@ bool amf_sbi_send_n1_n2_failure_notify(
return rc;
}
bool amf_ue_have_session_release_pending(amf_ue_t *amf_ue)
{
amf_sess_t *sess = NULL;
ogs_assert(amf_ue);
ogs_list_for_each(&amf_ue->sess_list, sess) {
if (amf_sess_have_session_release_pending(sess) == true)
return true;
}
return false;
}
bool amf_sess_have_session_release_pending(amf_sess_t *sess)
{
ogs_sbi_xact_t *xact = NULL;
ogs_assert(sess);
ogs_list_for_each(&sess->sbi.xact_list, xact) {
if (xact->state == AMF_UPDATE_SM_CONTEXT_N1_RELEASED)
return true;
if (xact->state == AMF_UPDATE_SM_CONTEXT_N2_RELEASED)
return true;
}
if (sess->n1_released == true)
return true;
if (sess->n2_released == true)
return true;
if (sess->resource_status == OpenAPI_resource_status_RELEASED)
return true;
return false;
}

8
src/amf/sbi-path.h
View File

@ -39,8 +39,9 @@ bool amf_sbi_send_request(
#define AMF_CREATE_SM_CONTEXT_NO_STATE 0
#define AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED 1
#define AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED 2
#define AMF_UE_INITIATED_DE_REGISTERED 1
#define AMF_NETWORK_INITIATED_IMPLICIT_DE_REGISTERED 2
#define AMF_NETWORK_INITIATED_EXPLICIT_DE_REGISTERED 3
#define AMF_UPDATE_SM_CONTEXT_ACTIVATED 11
#define AMF_UPDATE_SM_CONTEXT_SETUP_FAIL 12
@ -94,6 +95,9 @@ void amf_sbi_send_release_all_sessions(amf_ue_t *amf_ue, int state);
bool amf_sbi_send_n1_n2_failure_notify(
amf_sess_t *sess, OpenAPI_n1_n2_message_transfer_cause_e cause);
bool amf_ue_have_session_release_pending(amf_ue_t *amf_ue);
bool amf_sess_have_session_release_pending(amf_sess_t *sess);
#ifdef __cplusplus
}
#endif