PDN connectivity in disconnect state [#486]

After the PDN disconnect failed, there was a problem
that the PDN connectivity was not possible again.

PDN connectivity has been modified to work properly
even in the same situation as 401x2 pcap.
This commit is contained in:
Sukchan Lee 2020-09-05 15:36:18 -04:00
parent 0ef1769583
commit d544125943
2 changed files with 483 additions and 0 deletions

View File

@ -259,6 +259,7 @@ void esm_state_active(ogs_fsm_t *s, mme_event_t *e)
void esm_state_pdn_will_disconnect(ogs_fsm_t *s, mme_event_t *e)
{
int rv;
mme_ue_t *mme_ue = NULL;
mme_sess_t *sess = NULL;
mme_bearer_t *bearer = NULL;
@ -293,6 +294,19 @@ void esm_state_pdn_will_disconnect(ogs_fsm_t *s, mme_event_t *e)
mme_ue->imsi_bcd, sess->pti, bearer->ebi);
OGS_FSM_TRAN(s, esm_state_pdn_did_disconnect);
break;
case OGS_NAS_EPS_PDN_CONNECTIVITY_REQUEST:
ogs_debug("[ESM] PDN Connectivity request");
ogs_debug(" IMSI[%s] PTI[%d] EBI[%d]",
mme_ue->imsi_bcd, sess->pti, bearer->ebi);
rv = esm_handle_pdn_connectivity_request(
bearer, &message->esm.pdn_connectivity_request);
if (rv != OGS_OK) {
OGS_FSM_TRAN(s, esm_state_exception);
break;
}
OGS_FSM_TRAN(s, esm_state_inactive);
break;
default:
ogs_error("Unknown message(type:%d)",
message->esm.h.message_type);

View File

@ -1085,12 +1085,481 @@ static void test2_func(abts_case *tc, void *data)
test_ue_remove(test_ue);
}
static void test3_func(abts_case *tc, void *data)
{
int rv;
ogs_socknode_t *s1ap;
ogs_socknode_t *gtpu;
ogs_pkbuf_t *emmbuf;
ogs_pkbuf_t *esmbuf;
ogs_pkbuf_t *sendbuf;
ogs_pkbuf_t *recvbuf;
ogs_s1ap_message_t message;
uint8_t *rx_sid = NULL;
ogs_nas_5gs_mobile_identity_suci_t mobile_identity_suci;
test_ue_t *test_ue = NULL;
test_sess_t *sess = NULL;
test_bearer_t *bearer = NULL;
uint32_t enb_ue_s1ap_id;
uint64_t mme_ue_s1ap_id;
const char *_k_string = "465b5ce8b199b49faa5f0a2ee238a6bc";
uint8_t k[OGS_KEY_LEN];
const char *_opc_string = "e8ed289deba952e4283b54e88e6183ca";
uint8_t opc[OGS_KEY_LEN];
mongoc_collection_t *collection = NULL;
bson_t *doc = NULL;
int64_t count = 0;
bson_error_t error;
const char *json =
"{"
"\"_id\" : { \"$oid\" : \"310014158b8861d7605378c6\" }, "
"\"imsi\" : \"001010123456819\", "
"\"pdn\" : ["
"{"
"\"_id\" : { \"$oid\" : \"599eb929c850caabcbfdcd32\" },"
"\"apn\" : \"internet\","
"\"qos\" : {"
"\"qci\" : 9,"
"\"arp\" : {"
"\"priority_level\" : 8,"
"\"pre_emption_vulnerability\" : 1,"
"\"pre_emption_capability\" : 1"
"}"
"},"
"\"type\" : 2"
"},"
"{"
"\"_id\" : { \"$oid\" : \"310014158b8861d7605378c7\" }, "
"\"apn\" : \"ims\", "
"\"pcc_rule\" : ["
"{"
"\"_id\" : { \"$oid\" : \"599eb929c850caabcbfdcd2d\" },"
"\"qos\" : {"
"\"qci\" : 1,"
"\"gbr\" : {"
"\"downlink\" : { \"$numberLong\" : \"64\" },"
"\"uplink\" : { \"$numberLong\" : \"44\" }"
"},"
"\"mbr\" : {"
"\"downlink\" : { \"$numberLong\" : \"64\" },"
"\"uplink\" : { \"$numberLong\" : \"44\" }"
"},"
"\"arp\" : {"
"\"priority_level\" : 3,"
"\"pre_emption_vulnerability\" : 0,"
"\"pre_emption_capability\" : 0 }"
"}"
"}"
"],"
"\"ambr\" : {"
"\"uplink\" : { \"$numberLong\" : \"1000000\" }, "
"\"downlink\" : { \"$numberLong\" : \"1000000\" } "
"},"
"\"qos\" : { "
"\"qci\" : 6, "
"\"arp\" : { "
"\"priority_level\" : 6,"
"\"pre_emption_vulnerability\" : 1, "
"\"pre_emption_capability\" : 1"
"} "
"}, "
"\"type\" : 2"
"}"
"],"
"\"ambr\" : { "
"\"uplink\" : { \"$numberLong\" : \"1000000\" }, "
"\"downlink\" : { \"$numberLong\" : \"1000000\" } "
"},"
"\"subscribed_rau_tau_timer\" : 12,"
"\"network_access_mode\" : 2, "
"\"subscriber_status\" : 0, "
"\"access_restriction_data\" : 32, "
"\"security\" : { "
"\"k\" : \"465B5CE8 B199B49F AA5F0A2E E238A6BC\", "
"\"opc\" : \"E8ED289D EBA952E4 283B54E8 8E6183CA\", "
"\"amf\" : \"8000\", "
"\"sqn\" : { \"$numberLong\" : \"64\" } "
"}, "
"\"__v\" : 0 "
"}";
/* 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] = 0x10;
mobile_identity_suci.scheme_output[1] = 0x32;
mobile_identity_suci.scheme_output[2] = 0x54;
mobile_identity_suci.scheme_output[3] = 0x86;
mobile_identity_suci.scheme_output[4] = 0x91;
test_ue = test_ue_add_by_suci(&mobile_identity_suci, 13);
ogs_assert(test_ue);
test_ue->e_cgi.cell_id = 0x1079baf;
test_ue->nas.ksi = 0;
test_ue->nas.value = OGS_NAS_ATTACH_TYPE_COMBINED_EPS_IMSI_ATTACH;
OGS_HEX(_k_string, strlen(_k_string), test_ue->k);
OGS_HEX(_opc_string, strlen(_opc_string), test_ue->opc);
sess = test_sess_add_by_apn(test_ue, "internet");
ogs_assert(sess);
/* eNB connects to MME */
s1ap = tests1ap_client(AF_INET);
ABTS_PTR_NOTNULL(tc, s1ap);
/* eNB connects to SGW */
gtpu = test_gtpu_server(1, AF_INET);
ABTS_PTR_NOTNULL(tc, gtpu);
/* Send S1-Setup Reqeust */
sendbuf = test_s1ap_build_s1_setup_request(
S1AP_ENB_ID_PR_macroENB_ID, 0x54f64);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testenb_s1ap_send(s1ap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive S1-Setup Response */
recvbuf = testenb_s1ap_read(s1ap);
ABTS_PTR_NOTNULL(tc, recvbuf);
tests1ap_recv(NULL, recvbuf);
/********** Insert Subscriber in Database */
collection = mongoc_client_get_collection(
ogs_mongoc()->client, ogs_mongoc()->name, "subscribers");
ABTS_PTR_NOTNULL(tc, collection);
doc = BCON_NEW("imsi", BCON_UTF8(test_ue->imsi));
ABTS_PTR_NOTNULL(tc, doc);
count = mongoc_collection_count (
collection, MONGOC_QUERY_NONE, doc, 0, 0, NULL, &error);
if (count) {
ABTS_TRUE(tc, mongoc_collection_remove(collection,
MONGOC_REMOVE_SINGLE_REMOVE, doc, NULL, &error))
}
bson_destroy(doc);
doc = bson_new_from_json((const uint8_t *)json, -1, &error);;
ABTS_PTR_NOTNULL(tc, doc);
ABTS_TRUE(tc, mongoc_collection_insert(collection,
MONGOC_INSERT_NONE, doc, NULL, &error));
bson_destroy(doc);
doc = BCON_NEW("imsi", BCON_UTF8(test_ue->imsi));
ABTS_PTR_NOTNULL(tc, doc);
do {
count = mongoc_collection_count (
collection, MONGOC_QUERY_NONE, doc, 0, 0, NULL, &error);
} while (count == 0);
bson_destroy(doc);
collection = mongoc_client_get_collection(
ogs_mongoc()->client, ogs_mongoc()->name, "subscribers");
ABTS_PTR_NOTNULL(tc, collection);
/* Send Attach Request */
memset(&sess->pdn_connectivity_param,
0, sizeof(sess->pdn_connectivity_param));
sess->pdn_connectivity_param.eit = 1;
esmbuf = testesm_build_pdn_connectivity_request(sess);
ABTS_PTR_NOTNULL(tc, esmbuf);
memset(&test_ue->attach_request_param,
0, sizeof(test_ue->attach_request_param));
test_ue->attach_request_param.integrity_protected = 1;
test_ue->attach_request_param.drx_parameter = 1;
test_ue->attach_request_param.ms_network_capability = 1;
test_ue->attach_request_param.tmsi_status = 1;
test_ue->attach_request_param.mobile_station_classmark_2 = 1;
test_ue->attach_request_param.ue_usage_setting = 1;
emmbuf = testemm_build_attach_request(test_ue, esmbuf);
ABTS_PTR_NOTNULL(tc, emmbuf);
memset(&test_ue->initial_ue_param, 0, sizeof(test_ue->initial_ue_param));
sendbuf = test_s1ap_build_initial_ue_message(
test_ue, emmbuf, S1AP_RRC_Establishment_Cause_mo_Signalling, false);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
rv = testenb_s1ap_send(s1ap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive Authentication Request */
recvbuf = testenb_s1ap_read(s1ap);
ABTS_PTR_NOTNULL(tc, recvbuf);
tests1ap_recv(test_ue, recvbuf);
/* Send Authentication response */
emmbuf = testemm_build_authentication_response(test_ue);
ABTS_PTR_NOTNULL(tc, emmbuf);
sendbuf = test_s1ap_build_uplink_nas_transport(test_ue, emmbuf);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testenb_s1ap_send(s1ap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive Security mode Command */
recvbuf = testenb_s1ap_read(s1ap);
ABTS_PTR_NOTNULL(tc, recvbuf);
tests1ap_recv(test_ue, recvbuf);
/* Send Security mode complete */
test_ue->mobile_identity_imeisv_presence = true;
emmbuf = testemm_build_security_mode_complete(test_ue);
ABTS_PTR_NOTNULL(tc, emmbuf);
sendbuf = test_s1ap_build_uplink_nas_transport(test_ue, emmbuf);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testenb_s1ap_send(s1ap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive ESM Information Request */
recvbuf = testenb_s1ap_read(s1ap);
ABTS_PTR_NOTNULL(tc, recvbuf);
tests1ap_recv(test_ue, recvbuf);
/* Send ESM Information Response */
sess->esm_information_param.pco = 1;
esmbuf = testesm_build_esm_information_response(sess);
ABTS_PTR_NOTNULL(tc, esmbuf);
sendbuf = test_s1ap_build_uplink_nas_transport(test_ue, esmbuf);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testenb_s1ap_send(s1ap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive Initial Context Setup Request +
* Attach Accept +
* Activate Default Bearer Context Request */
recvbuf = testenb_s1ap_read(s1ap);
ABTS_PTR_NOTNULL(tc, recvbuf);
tests1ap_recv(test_ue, recvbuf);
/* Send UE Capability Info Indication */
sendbuf = tests1ap_build_ue_radio_capability_info_indication(test_ue);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testenb_s1ap_send(s1ap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Send Initial Context Setup Response */
sendbuf = test_s1ap_build_initial_context_setup_response(test_ue);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testenb_s1ap_send(s1ap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Send Attach Complete + Activate default EPS bearer cotext accept */
test_ue->nr_cgi.cell_id = 0x1234502;
bearer = test_bearer_find_by_ue_ebi(test_ue, 5);
ogs_assert(bearer);
esmbuf = testesm_build_activate_default_eps_bearer_context_accept(
bearer, false);
ABTS_PTR_NOTNULL(tc, esmbuf);
emmbuf = testemm_build_attach_complete(test_ue, esmbuf);
ABTS_PTR_NOTNULL(tc, emmbuf);
sendbuf = test_s1ap_build_uplink_nas_transport(test_ue, emmbuf);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testenb_s1ap_send(s1ap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive EMM information */
recvbuf = testenb_s1ap_read(s1ap);
ABTS_PTR_NOTNULL(tc, recvbuf);
tests1ap_recv(test_ue, recvbuf);
/* Send GTP-U ICMP Packet */
rv = test_gtpu_send_ping(gtpu, bearer, TEST_PING_IPV4);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive GTP-U ICMP Packet */
recvbuf = test_gtpu_read(gtpu);
ABTS_PTR_NOTNULL(tc, recvbuf);
ogs_pkbuf_free(recvbuf);
/* Send PDN Connectivity Request */
sess = test_sess_add_by_apn(test_ue, "ims");
ogs_assert(sess);
sess->pti = 37;
sess->pdn_connectivity_param.integrity_protected = 1;
sess->pdn_connectivity_param.ciphered = 1;
sess->pdn_connectivity_param.apn = 1;
sess->pdn_connectivity_param.pco = 1;
esmbuf = testesm_build_pdn_connectivity_request(sess);
ABTS_PTR_NOTNULL(tc, esmbuf);
sendbuf = test_s1ap_build_uplink_nas_transport(test_ue, esmbuf);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testenb_s1ap_send(s1ap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive E-RAB Setup Request +
* Activate default EPS bearer context request */
recvbuf = testenb_s1ap_read(s1ap);
ABTS_PTR_NOTNULL(tc, recvbuf);
tests1ap_recv(test_ue, recvbuf);
/* Send E-RAB Setup Response */
bearer = test_bearer_find_by_ue_ebi(test_ue, 6);
ogs_assert(bearer);
sendbuf = test_s1ap_build_e_rab_setup_response(bearer);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testenb_s1ap_send(s1ap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Send Activate default EPS bearer context accept */
esmbuf = testesm_build_activate_default_eps_bearer_context_accept(
bearer, true);
ABTS_PTR_NOTNULL(tc, esmbuf);
sendbuf = test_s1ap_build_uplink_nas_transport(test_ue, esmbuf);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testenb_s1ap_send(s1ap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* DELAY is needed in default EPS bearer */
ogs_msleep(100);
/* Send GTP-U ICMP Packet */
rv = test_gtpu_send_ping(gtpu, bearer, TEST_PING_IPV4);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive GTP-U ICMP Packet */
recvbuf = test_gtpu_read(gtpu);
ABTS_PTR_NOTNULL(tc, recvbuf);
ogs_pkbuf_free(recvbuf);
/* Send PDN disconnectivity request */
sess->pti = 38;
esmbuf = testesm_build_pdn_disconnect_request(sess);
ABTS_PTR_NOTNULL(tc, esmbuf);
sendbuf = test_s1ap_build_uplink_nas_transport(test_ue, esmbuf);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testenb_s1ap_send(s1ap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive E-RAB Release Command +
* Deactivate EPS bearer context request */
recvbuf = testenb_s1ap_read(s1ap);
ABTS_PTR_NOTNULL(tc, recvbuf);
tests1ap_recv(test_ue, recvbuf);
/* Send PDN Connectivity Request */
sess = test_sess_add_by_apn(test_ue, "ims");
ogs_assert(sess);
sess->pti = 39;
sess->pdn_connectivity_param.integrity_protected = 1;
sess->pdn_connectivity_param.ciphered = 1;
sess->pdn_connectivity_param.apn = 1;
sess->pdn_connectivity_param.pco = 1;
esmbuf = testesm_build_pdn_connectivity_request(sess);
ABTS_PTR_NOTNULL(tc, esmbuf);
sendbuf = test_s1ap_build_uplink_nas_transport(test_ue, esmbuf);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testenb_s1ap_send(s1ap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive E-RAB Setup Request +
* Activate default EPS bearer context request */
recvbuf = testenb_s1ap_read(s1ap);
ABTS_PTR_NOTNULL(tc, recvbuf);
tests1ap_recv(test_ue, recvbuf);
/* Send E-RAB Setup Response */
bearer = test_bearer_find_by_ue_ebi(test_ue, 6);
ogs_assert(bearer);
sendbuf = test_s1ap_build_e_rab_setup_response(bearer);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testenb_s1ap_send(s1ap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Send Activate default EPS bearer context accept */
esmbuf = testesm_build_activate_default_eps_bearer_context_accept(
bearer, true);
ABTS_PTR_NOTNULL(tc, esmbuf);
sendbuf = test_s1ap_build_uplink_nas_transport(test_ue, esmbuf);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testenb_s1ap_send(s1ap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Send GTP-U ICMP Packet */
rv = test_gtpu_send_ping(gtpu, bearer, TEST_PING_IPV4);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive GTP-U ICMP Packet */
recvbuf = test_gtpu_read(gtpu);
ABTS_PTR_NOTNULL(tc, recvbuf);
ogs_pkbuf_free(recvbuf);
/* Send Detach Request */
emmbuf = testemm_build_detach_request(test_ue, 1);
ABTS_PTR_NOTNULL(tc, emmbuf);
sendbuf = test_s1ap_build_initial_ue_message(
test_ue, emmbuf, S1AP_RRC_Establishment_Cause_mo_Signalling, true);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testenb_s1ap_send(s1ap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
/* Receive OLD UE Context Release Command */
enb_ue_s1ap_id = test_ue->enb_ue_s1ap_id;
recvbuf = testenb_s1ap_read(s1ap);
ABTS_PTR_NOTNULL(tc, recvbuf);
tests1ap_recv(test_ue, recvbuf);
/* Send OLD UE Context Release Complete */
sendbuf = test_s1ap_build_ue_context_release_complete(test_ue);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testenb_s1ap_send(s1ap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
test_ue->enb_ue_s1ap_id = enb_ue_s1ap_id;
/* Receive UE Context Release Command */
recvbuf = testenb_s1ap_read(s1ap);
ABTS_PTR_NOTNULL(tc, recvbuf);
tests1ap_recv(test_ue, recvbuf);
/* Send UE Context Release Complete */
sendbuf = test_s1ap_build_ue_context_release_complete(test_ue);
ABTS_PTR_NOTNULL(tc, sendbuf);
rv = testenb_s1ap_send(s1ap, sendbuf);
ABTS_INT_EQUAL(tc, OGS_OK, rv);
ogs_msleep(300);
/********** Remove Subscriber in Database */
doc = BCON_NEW("imsi", BCON_UTF8(test_ue->imsi));
ABTS_PTR_NOTNULL(tc, doc);
ABTS_TRUE(tc, mongoc_collection_remove(collection,
MONGOC_REMOVE_SINGLE_REMOVE, doc, NULL, &error))
bson_destroy(doc);
mongoc_collection_destroy(collection);
/* eNB disonncect from MME */
testenb_s1ap_close(s1ap);
/* eNB disonncect from SGW */
test_gtpu_close(gtpu);
test_ue_remove(test_ue);
}
abts_suite *test_rx(abts_suite *suite)
{
suite = ADD_SUITE(suite)
abts_run_test(suite, test1_func, NULL);
abts_run_test(suite, test2_func, NULL);
abts_run_test(suite, test3_func, NULL);
return suite;
}