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[SMF] Exception handling in session release(#1155) 

- UE changes the airplain-mode. However, it does not send PDU
    session complete message
    - Added exception handling for PDU session release
This commit is contained in:
Sukchan Lee 2021-09-04 16:14:18 +09:00
parent 1354947164
commit e730530f7b
4 changed files with 440 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
src/smf/gsm-sm.c
View File

@ -375,9 +375,6 @@ void smf_gsm_state_operational(ogs_fsm_t *s, smf_event_t *e)
case OpenAPI_n2_sm_info_type_PDU_RES_REL_RSP:
ngap_state = sess->ngap_state.pdu_session_resource_release;
/* Clear NGAP State */
sess->ngap_state.pdu_session_resource_release = SMF_NGAP_STATE_NONE;
if (ngap_state == SMF_NGAP_STATE_DELETE_TRIGGER_UE_REQUESTED) {
ogs_assert(true == ogs_sbi_send_http_status_no_content(stream));
} else if (ngap_state ==

3
src/smf/n4-handler.c
View File

@ -320,6 +320,7 @@ void smf_5gc_n4_handle_session_modification_response(
if (stream)
smf_sbi_send_sm_context_update_error(
stream, status, strerror, NULL, NULL, NULL);
ogs_error("%s", strerror);
ogs_free(strerror);
return;
}
@ -478,6 +479,7 @@ void smf_5gc_n4_handle_session_deletion_response(
"PFCP Cause [%d] : Not Accepted", rsp->cause.u8);
smf_sbi_send_sm_context_update_error(
stream, status, strerror, NULL, NULL, NULL);
ogs_error("%s", strerror);
ogs_free(strerror);
return;
}
@ -499,7 +501,6 @@ void smf_5gc_n4_handle_session_deletion_response(
smf_sbi_send_sm_context_updated_data_n1_n2_message(sess, stream,
n1smbuf, OpenAPI_n2_sm_info_type_PDU_RES_REL_CMD, n2smbuf);
} else {
memset(&sendmsg, 0, sizeof(sendmsg));
response = ogs_sbi_build_response(

51
src/smf/nsmf-handler.c
View File

@ -350,19 +350,29 @@ bool smf_nsmf_handle_update_sm_context(
/*********************************************************
* Handle DEACTIVATED
********************************************************/
if (ogs_list_count(&sess->bearer_list) == 0) {
/* If there is no Qos-Flow,
* we assume that there is no PFCP context in the UPF.
if (sess->ngap_state.pdu_session_resource_release ==
SMF_NGAP_STATE_DELETE_TRIGGER_UE_REQUESTED) {
/*
* 1. UE->SMF: PDU session release request
* 2. PFCP Session Deletion Request/Response
* 3. AMF/SMF->UE : PDUSessionResourceReleaseCommand +
* PDU session release command
* sess->ngap_state.pdu_session_resource_release is set
* to SMF_NGAP_STATE_DELETE_TRIGGER_UE_REQUESTED
* 4. UE->AMF/SMF : PDUSessionResourceReleaseResponse
*
* PFCP deactivation is skipped. */
* If UE sends UEContextReleaseRequest to the AMF/SMF,
* there is no PFCP context in the SMF/UPF.
*
* So, PFCP deactivation is skipped.
*/
smf_sbi_send_sm_context_updated_data_up_cnx_state(
sess, stream, OpenAPI_up_cnx_state_DEACTIVATED);
} else {
ogs_assert(OGS_OK ==
smf_5gc_pfcp_send_session_modification_request(
sess, stream,
OGS_PFCP_MODIFY_DL_ONLY|OGS_PFCP_MODIFY_DEACTIVATE,
0));
OGS_PFCP_MODIFY_DL_ONLY|OGS_PFCP_MODIFY_DEACTIVATE, 0));
}
} else if (SmContextUpdateData->up_cnx_state ==
@ -554,17 +564,30 @@ bool smf_nsmf_handle_update_sm_context(
} else if (SmContextUpdateData->is_release == true &&
SmContextUpdateData->release == true) {
if (sess->policy_association_id) {
smf_npcf_smpolicycontrol_param_t param;
if (sess->ngap_state.pdu_session_resource_release ==
SMF_NGAP_STATE_DELETE_TRIGGER_UE_REQUESTED) {
memset(&param, 0, sizeof(param));
/* PCF session context has already been removed */
memset(&sendmsg, 0, sizeof(sendmsg));
param.ue_location = true;
param.ue_timezone = true;
response = ogs_sbi_build_response(
&sendmsg, OGS_SBI_HTTP_STATUS_NO_CONTENT);
ogs_assert(response);
ogs_assert(true ==
ogs_sbi_server_send_response(stream, response));
} else {
smf_npcf_smpolicycontrol_param_t param;
ogs_assert(true ==
smf_sbi_discover_and_send(OpenAPI_nf_type_PCF, sess, stream,
OGS_PFCP_DELETE_TRIGGER_AMF_UPDATE_SM_CONTEXT, &param,
smf_npcf_smpolicycontrol_build_delete));
memset(&param, 0, sizeof(param));
param.ue_location = true;
param.ue_timezone = true;
ogs_assert(true ==
smf_sbi_discover_and_send(OpenAPI_nf_type_PCF, sess, stream,
OGS_PFCP_DELETE_TRIGGER_AMF_UPDATE_SM_CONTEXT, &param,
smf_npcf_smpolicycontrol_build_delete));
}
} else {
ogs_error("No PolicyAssociationId");
smf_sbi_send_sm_context_update_error(

401
tests/registration/ue-context-test.c
View File

@ -1299,6 +1299,406 @@ static void test4_func(abts_case *tc, void *data)
test_ue_remove(test_ue);
}
static void test5_func(abts_case *tc, void *data)
{
int rv;
ogs_socknode_t *ngap;
ogs_socknode_t *gtpu;
ogs_pkbuf_t *gmmbuf;
ogs_pkbuf_t *gsmbuf;
ogs_pkbuf_t *nasbuf;
ogs_pkbuf_t *sendbuf;
ogs_pkbuf_t *recvbuf;
ogs_ngap_message_t message;
int i;
ogs_nas_5gs_mobile_identity_suci_t mobile_identity_suci;
test_ue_t *test_ue = NULL;
test_sess_t *sess = NULL;
test_bearer_t *qos_flow = NULL;
bson_t *doc = NULL;
/* Setup Test UE & Session Context */
memset(&mobile_identity_suci, 0, sizeof(mobile_identity_suci));
mobile_identity_suci.h.supi_format = OGS_NAS_5GS_SUPI_FORMAT_IMSI;
mobile_identity_suci.h.type = OGS_NAS_5GS_MOBILE_IDENTITY_SUCI;
mobile_identity_suci.routing_indicator1 = 0;
mobile_identity_suci.routing_indicator2 = 0xf;
mobile_identity_suci.routing_indicator3 = 0xf;
mobile_identity_suci.routing_indicator4 = 0xf;
mobile_identity_suci.protection_scheme_id = OGS_NAS_5GS_NULL_SCHEME;
mobile_identity_suci.home_network_pki_value = 0;
mobile_identity_suci.scheme_output[0] = 0;
mobile_identity_suci.scheme_output[1] = 0;
mobile_identity_suci.scheme_output[2] = 0x20;
mobile_identity_suci.scheme_output[3] = 0x31;
mobile_identity_suci.scheme_output[4] = 0x90;
test_ue = test_ue_add_by_suci(&mobile_identity_suci, 13);
ogs_assert(test_ue);
test_ue->nr_cgi.cell_id = 0x40001;
test_ue->nas.registration.tsc = 0;
test_ue->nas.registration.ksi = OGS_NAS_KSI_NO_KEY_IS_AVAILABLE;
test_ue->nas.registration.follow_on_request = 1;
test_ue->nas.registration.value = OGS_NAS_5GS_REGISTRATION_TYPE_INITIAL;
test_ue->k_string = "465b5ce8b199b49faa5f0a2ee238a6bc";
test_ue->opc_string = "e8ed289deba952e4283b54e88e6183ca";
/* gNB connects to AMF */
ngap = testngap_client(AF_INET);
ABTS_PTR_NOTNULL(tc, ngap);
/* gNB connects to UPF */
gtpu = test_gtpu_server(1, AF_INET);
ABTS_PTR_NOTNULL(tc, gtpu);
/* Send NG-Setup Reqeust */
sendbuf = testngap_build_ng_setup_request(0x4000, 22);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive NG-Setup Response */
recvbuf = testgnb_ngap_read(ngap);
ABTS_PTR_NOTNULL(tc, recvbuf);
testngap_recv(test_ue, recvbuf);
/********** Insert Subscriber in Database */
doc = test_db_new_simple(test_ue);
ABTS_PTR_NOTNULL(tc, doc);
ABTS_INT_EQUAL(tc, OGS_OK, test_db_insert_ue(test_ue, doc));
/* Send Registration request */
test_ue->registration_request_param.guti = 1;
gmmbuf = testgmm_build_registration_request(test_ue, NULL);
ABTS_PTR_NOTNULL(tc, gmmbuf);
test_ue->registration_request_param.gmm_capability = 1;
test_ue->registration_request_param.s1_ue_network_capability = 1;
test_ue->registration_request_param.requested_nssai = 1;
test_ue->registration_request_param.last_visited_registered_tai = 1;
test_ue->registration_request_param.ue_usage_setting = 1;
nasbuf = testgmm_build_registration_request(test_ue, NULL);
ABTS_PTR_NOTNULL(tc, nasbuf);
sendbuf = testngap_build_initial_ue_message(test_ue, gmmbuf, false, false);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive Identity request */
recvbuf = testgnb_ngap_read(ngap);
ABTS_PTR_NOTNULL(tc, recvbuf);
testngap_recv(test_ue, recvbuf);
/* Send Identity response */
gmmbuf = testgmm_build_identity_response(test_ue);
ABTS_PTR_NOTNULL(tc, gmmbuf);
sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive Authentication request */
recvbuf = testgnb_ngap_read(ngap);
ABTS_PTR_NOTNULL(tc, recvbuf);
testngap_recv(test_ue, recvbuf);
/* Send Authentication response */
gmmbuf = testgmm_build_authentication_response(test_ue);
ABTS_PTR_NOTNULL(tc, gmmbuf);
sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive Security mode command */
recvbuf = testgnb_ngap_read(ngap);
ABTS_PTR_NOTNULL(tc, recvbuf);
testngap_recv(test_ue, recvbuf);
/* Send Security mode complete */
gmmbuf = testgmm_build_security_mode_complete(test_ue, nasbuf);
ABTS_PTR_NOTNULL(tc, gmmbuf);
sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive DownlinkNASTransport +
* Registration accept */
recvbuf = testgnb_ngap_read(ngap);
ABTS_PTR_NOTNULL(tc, recvbuf);
testngap_recv(test_ue, recvbuf);
ABTS_INT_EQUAL(tc,
NGAP_ProcedureCode_id_DownlinkNASTransport,
test_ue->ngap_procedure_code);
/* Send UERadioCapabilityInfoIndication */
sendbuf = testngap_build_ue_radio_capability_info_indication(test_ue);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Send Registration complete */
gmmbuf = testgmm_build_registration_complete(test_ue);
ABTS_PTR_NOTNULL(tc, gmmbuf);
sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive Configuration update command */
recvbuf = testgnb_ngap_read(ngap);
ABTS_PTR_NOTNULL(tc, recvbuf);
testngap_recv(test_ue, recvbuf);
/* Send PDU session establishment request */
sess = test_sess_add_by_dnn_and_psi(test_ue, "internet", 5);
ogs_assert(sess);
sess->ul_nas_transport_param.request_type =
OGS_NAS_5GS_REQUEST_TYPE_INITIAL;
sess->ul_nas_transport_param.dnn = 0;
sess->ul_nas_transport_param.s_nssai = 1;
sess->pdu_session_establishment_param.ssc_mode = 1;
sess->pdu_session_establishment_param.epco = 1;
gsmbuf = testgsm_build_pdu_session_establishment_request(sess);
ABTS_PTR_NOTNULL(tc, gsmbuf);
gmmbuf = testgmm_build_ul_nas_transport(sess,
OGS_NAS_PAYLOAD_CONTAINER_N1_SM_INFORMATION, gsmbuf);
ABTS_PTR_NOTNULL(tc, gmmbuf);
sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive InitialContextSetupRequest +
* DL NAS transport +
* PDU session establishment accept */
recvbuf = testgnb_ngap_read(ngap);
ABTS_PTR_NOTNULL(tc, recvbuf);
testngap_recv(test_ue, recvbuf);
ABTS_INT_EQUAL(tc,
NGAP_ProcedureCode_id_InitialContextSetup,
test_ue->ngap_procedure_code);
/* Send InitialContextSetupResponse */
sendbuf = testngap_build_initial_context_setup_response(test_ue, true);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Send GTP-U ICMP Packet */
qos_flow = test_qos_flow_find_by_qfi(sess, 1);
ogs_assert(qos_flow);
rv = test_gtpu_send_ping(gtpu, qos_flow, TEST_PING_IPV4);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive GTP-U ICMP Packet */
recvbuf = testgnb_gtpu_read(gtpu);
ABTS_PTR_NOTNULL(tc, recvbuf);
ogs_pkbuf_free(recvbuf);
/* Send PDU Session release request */
sess->ul_nas_transport_param.request_type = 0;
sess->ul_nas_transport_param.dnn = 0;
sess->ul_nas_transport_param.s_nssai = 0;
sess->pdu_session_establishment_param.ssc_mode = 0;
sess->pdu_session_establishment_param.epco = 0;
gsmbuf = testgsm_build_pdu_session_release_request(sess);
ABTS_PTR_NOTNULL(tc, gsmbuf);
gmmbuf = testgmm_build_ul_nas_transport(sess,
OGS_NAS_PAYLOAD_CONTAINER_N1_SM_INFORMATION, gsmbuf);
ABTS_PTR_NOTNULL(tc, gmmbuf);
sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive PDUSessionResourceReleaseCommand +
* DL NAS transport +
* PDU session release command */
recvbuf = testgnb_ngap_read(ngap);
ABTS_PTR_NOTNULL(tc, recvbuf);
testngap_recv(test_ue, recvbuf);
/* Send PDUSessionResourceReleaseResponse */
sendbuf = testngap_build_pdu_session_resource_release_response(sess);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Send UEContextReleaseRequest */
sendbuf = testngap_build_ue_context_release_request(test_ue,
NGAP_Cause_PR_radioNetwork,
NGAP_CauseRadioNetwork_release_due_to_ngran_generated_reason,
true);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive UEContextReleaseCommand */
recvbuf = testgnb_ngap_read(ngap);
ABTS_PTR_NOTNULL(tc, recvbuf);
testngap_recv(test_ue, recvbuf);
ABTS_INT_EQUAL(tc,
NGAP_ProcedureCode_id_UEContextRelease,
test_ue->ngap_procedure_code);
/* Send UEContextReleaseComplete */
sendbuf = testngap_build_ue_context_release_complete(test_ue);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Send Registration request */
test_ue->registration_request_param.integrity_protected = 0;
test_ue->registration_request_param.guti = 1;
test_ue->registration_request_param.gmm_capability = 1;
test_ue->registration_request_param.requested_nssai = 1;
test_ue->registration_request_param.last_visited_registered_tai = 1;
test_ue->registration_request_param.s1_ue_network_capability = 0;
test_ue->registration_request_param.ue_usage_setting = 1;
nasbuf = testgmm_build_registration_request(test_ue, NULL);
ABTS_PTR_NOTNULL(tc, nasbuf);
memset(&test_ue->registration_request_param, 0,
sizeof(test_ue->registration_request_param));
test_ue->registration_request_param.integrity_protected = 1;
test_ue->registration_request_param.guti = 1;
gmmbuf = testgmm_build_registration_request(test_ue, nasbuf);
ABTS_PTR_NOTNULL(tc, gmmbuf);
sendbuf = testngap_build_initial_ue_message(test_ue, gmmbuf, false, true);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive InitialContextSetupRequest +
* Registration accept */
recvbuf = testgnb_ngap_read(ngap);
ABTS_PTR_NOTNULL(tc, recvbuf);
testngap_recv(test_ue, recvbuf);
ABTS_INT_EQUAL(tc,
NGAP_ProcedureCode_id_InitialContextSetup,
test_ue->ngap_procedure_code);
ABTS_INT_EQUAL(tc, 0x0000, test_ue->pdu_session_reactivation_result);
/* Send InitialContextSetupResponse */
sendbuf = testngap_build_initial_context_setup_response(test_ue, false);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Send Registration complete */
gmmbuf = testgmm_build_registration_complete(test_ue);
ABTS_PTR_NOTNULL(tc, gmmbuf);
sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive Configuration update command */
recvbuf = testgnb_ngap_read(ngap);
ABTS_PTR_NOTNULL(tc, recvbuf);
testngap_recv(test_ue, recvbuf);
/* Send PDU session establishment request */
sess = test_sess_find_by_psi(test_ue, 5);
ogs_assert(sess);
sess->ul_nas_transport_param.request_type =
OGS_NAS_5GS_REQUEST_TYPE_INITIAL;
sess->ul_nas_transport_param.dnn = 1;
sess->ul_nas_transport_param.s_nssai = 1;
sess->pdu_session_establishment_param.ssc_mode = 1;
sess->pdu_session_establishment_param.epco = 1;
gsmbuf = testgsm_build_pdu_session_establishment_request(sess);
ABTS_PTR_NOTNULL(tc, gsmbuf);
gmmbuf = testgmm_build_ul_nas_transport(sess,
OGS_NAS_PAYLOAD_CONTAINER_N1_SM_INFORMATION, gsmbuf);
ABTS_PTR_NOTNULL(tc, gmmbuf);
sendbuf = testngap_build_uplink_nas_transport(test_ue, gmmbuf);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive PDUSessionResourceSetupRequest +
* DL NAS transport +
* PDU session establishment accept */
recvbuf = testgnb_ngap_read(ngap);
ABTS_PTR_NOTNULL(tc, recvbuf);
testngap_recv(test_ue, recvbuf);
ABTS_INT_EQUAL(tc,
NGAP_ProcedureCode_id_PDUSessionResourceSetup,
test_ue->ngap_procedure_code);
/* Send PDUSessionResourceSetupResponse */
sendbuf = testngap_sess_build_pdu_session_resource_setup_response(sess);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Send GTP-U ICMP Packet */
qos_flow = test_qos_flow_find_by_qfi(sess, 1);
ogs_assert(qos_flow);
rv = test_gtpu_send_ping(gtpu, qos_flow, TEST_PING_IPV4);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive GTP-U ICMP Packet */
recvbuf = testgnb_gtpu_read(gtpu);
ABTS_PTR_NOTNULL(tc, recvbuf);
ogs_pkbuf_free(recvbuf);
/* Send UEContextReleaseRequest */
sendbuf = testngap_build_ue_context_release_request(test_ue,
NGAP_Cause_PR_radioNetwork, NGAP_CauseRadioNetwork_user_inactivity,
true);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive UEContextReleaseCommand */
recvbuf = testgnb_ngap_read(ngap);
ABTS_PTR_NOTNULL(tc, recvbuf);
testngap_recv(test_ue, recvbuf);
ABTS_INT_EQUAL(tc,
NGAP_ProcedureCode_id_UEContextRelease,
test_ue->ngap_procedure_code);
/* Send UEContextReleaseComplete */
sendbuf = testngap_build_ue_context_release_complete(test_ue);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testgnb_ngap_send(ngap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
ogs_msleep(300);
/********** Remove Subscriber in Database */
ABTS_INT_EQUAL(tc, OGS_OK, test_db_remove_ue(test_ue));
/* gNB disonncect from UPF */
testgnb_gtpu_close(gtpu);
/* gNB disonncect from AMF */
testgnb_ngap_close(ngap);
/* Clear Test UE Context */
test_ue_remove(test_ue);
}
abts_suite *test_ue_context(abts_suite *suite)
{
suite = ADD_SUITE(suite)
@ -1307,6 +1707,7 @@ abts_suite *test_ue_context(abts_suite *suite)
abts_run_test(suite, test2_func, NULL);
abts_run_test(suite, test3_func, NULL);
abts_run_test(suite, test4_func, NULL);
abts_run_test(suite, test5_func, NULL);
return suite;
}