//------------------------------------------------------------------------------
static void *eNB_app_task(void *args_p)
//------------------------------------------------------------------------------
{
const Enb_properties_array_t *enb_properties_p = NULL;
uint32_t enb_nb = 1; /* Default number of eNB is 1 */
uint32_t enb_id_start = 0;
uint32_t enb_id_end = enb_id_start + enb_nb;
uint32_t register_enb_pending;
uint32_t registered_enb;
long enb_register_retry_timer_id;
MessageDef *msg_p = NULL;
const char *msg_name = NULL;
instance_t instance;
int result;
itti_mark_task_ready (TASK_ENB_APP);
enb_properties_p = enb_config_get();
AssertFatal (enb_nb <= enb_properties_p->number,
"Number of eNB is greater than eNB defined in configuration file (%d/%d)!",
enb_nb, enb_properties_p->number);
/* Try to register each eNB */
registered_enb = 0;
register_enb_pending = eNB_app_register (enb_id_start, enb_id_end, enb_properties_p);
do {
// Wait for a message
itti_receive_msg (TASK_ENB_APP, &msg_p);
msg_name = ITTI_MSG_NAME (msg_p);
instance = ITTI_MSG_INSTANCE (msg_p);
switch (ITTI_MSG_ID(msg_p)) {
case TERMINATE_MESSAGE:
itti_exit_task ();
break;
case MESSAGE_TEST:
LOG_I(ENB_APP, "Received %s\n", ITTI_MSG_NAME(msg_p));
break;
case S1AP_REGISTER_ENB_CNF:
LOG_I(ENB_APP, "[eNB %d] Received %s: associated MME %d\n", instance, msg_name,
S1AP_REGISTER_ENB_CNF(msg_p).nb_mme);
DevAssert(register_enb_pending > 0);
register_enb_pending--;
/* Check if at least eNB is registered with one MME */
if (S1AP_REGISTER_ENB_CNF(msg_p).nb_mme > 0) {
registered_enb++;
}
/* Check if all register eNB requests have been processed */
if (register_enb_pending == 0) {
if (registered_enb == enb_nb) {
mme_test_s1_start_test(instance);
} else {
uint32_t not_associated = enb_nb - registered_enb;
LOG_W(ENB_APP, " %d eNB %s not associated with a MME, retrying registration in %d seconds ...\n",
not_associated, not_associated > 1 ? "are" : "is", ENB_REGISTER_RETRY_DELAY);
/* Restart the eNB registration process in ENB_REGISTER_RETRY_DELAY seconds */
if (timer_setup (ENB_REGISTER_RETRY_DELAY, 0, TASK_ENB_APP, INSTANCE_DEFAULT, TIMER_ONE_SHOT,
NULL, &enb_register_retry_timer_id) < 0) {
LOG_E(ENB_APP, " Can not start eNB register retry timer, use \"sleep\" instead!\n");
sleep(ENB_REGISTER_RETRY_DELAY);
/* Restart the registration process */
registered_enb = 0;
register_enb_pending = eNB_app_register (enb_id_start, enb_id_end, enb_properties_p);
}
}
}
break;
case S1AP_DEREGISTERED_ENB_IND:
LOG_W(ENB_APP, "[eNB %d] Received %s: associated MME %d\n", instance, msg_name,
S1AP_DEREGISTERED_ENB_IND(msg_p).nb_mme);
/* TODO handle recovering of registration */
break;
case TIMER_HAS_EXPIRED:
LOG_I(ENB_APP, " Received %s: timer_id %d\n", msg_name, TIMER_HAS_EXPIRED(msg_p).timer_id);
if (TIMER_HAS_EXPIRED (msg_p).timer_id == enb_register_retry_timer_id) {
/* Restart the registration process */
registered_enb = 0;
register_enb_pending = eNB_app_register (enb_id_start, enb_id_end, enb_properties_p);
}
break;
default:
LOG_E(ENB_APP, "Received unexpected message %s\n", msg_name);
break;
}
result = itti_free (ITTI_MSG_ORIGIN_ID(msg_p), msg_p);
AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
} while (1);
return NULL;
}
static void *nas_intertask_interface(void *args_p)
{
itti_mark_task_ready(TASK_NAS_MME);
MSC_START_USE();
while(1) {
MessageDef *received_message_p;
next_message:
itti_receive_msg(TASK_NAS_MME, &received_message_p);
switch (ITTI_MSG_ID(received_message_p)) {
case NAS_CONNECTION_ESTABLISHMENT_IND: {
#if defined(DISABLE_USE_NAS)
MessageDef *message_p;
nas_attach_req_t *nas_req_p;
s1ap_initial_ue_message_t *transparent;
NAS_DEBUG("NAS abstraction: Generating NAS ATTACH REQ\n");
message_p = itti_alloc_new_message(TASK_NAS_MME, NAS_ATTACH_REQ);
nas_req_p = &message_p->ittiMsg.nas_attach_req;
transparent = &message_p->ittiMsg.nas_attach_req.transparent;
nas_req_p->initial = INITIAL_REQUEST;
sprintf(nas_req_p->imsi, "%14llu", 20834123456789ULL);
memcpy(transparent, &received_message_p->ittiMsg.nas_conn_est_ind.transparent,
sizeof(s1ap_initial_ue_message_t));
itti_send_msg_to_task(TASK_MME_APP, INSTANCE_DEFAULT, message_p);
#else
nas_establish_ind_t *nas_est_ind_p;
nas_est_ind_p = &received_message_p->ittiMsg.nas_conn_est_ind.nas;
nas_proc_establish_ind(nas_est_ind_p->UEid,
nas_est_ind_p->tac,
nas_est_ind_p->initialNasMsg.data,
nas_est_ind_p->initialNasMsg.length);
#endif
}
break;
#if defined(DISABLE_USE_NAS)
case NAS_ATTACH_ACCEPT: {
itti_send_msg_to_task(TASK_S1AP, INSTANCE_DEFAULT, received_message_p);
goto next_message;
}
break;
case NAS_AUTHENTICATION_REQ: {
MessageDef *message_p;
nas_auth_resp_t *nas_resp_p;
NAS_DEBUG("NAS abstraction: Generating NAS AUTHENTICATION RESPONSE\n");
message_p = itti_alloc_new_message(TASK_NAS_MME, NAS_AUTHENTICATION_RESP);
nas_resp_p = &message_p->ittiMsg.nas_auth_resp;
memcpy(nas_resp_p->imsi, received_message_p->ittiMsg.nas_auth_req.imsi, 16);
itti_send_msg_to_task(TASK_MME_APP, INSTANCE_DEFAULT, message_p);
}
break;
#else
case NAS_UPLINK_DATA_IND: {
nas_proc_ul_transfer_ind(NAS_UL_DATA_IND(received_message_p).UEid,
NAS_UL_DATA_IND(received_message_p).nasMsg.data,
NAS_UL_DATA_IND(received_message_p).nasMsg.length);
}
break;
case NAS_DOWNLINK_DATA_CNF: {
nas_proc_dl_transfer_cnf(NAS_DL_DATA_CNF(received_message_p).UEid);
} break;
case NAS_DOWNLINK_DATA_REJ: {
nas_proc_dl_transfer_rej(NAS_DL_DATA_REJ(received_message_p).UEid);
} break;
case NAS_AUTHENTICATION_PARAM_RSP: {
nas_proc_auth_param_res(&NAS_AUTHENTICATION_PARAM_RSP(received_message_p));
}
break;
case NAS_AUTHENTICATION_PARAM_FAIL: {
nas_proc_auth_param_fail(&NAS_AUTHENTICATION_PARAM_FAIL(received_message_p));
}
break;
#endif
case NAS_PDN_CONNECTIVITY_RSP: {
nas_proc_pdn_connectivity_res(&NAS_PDN_CONNECTIVITY_RSP(received_message_p));
}
break;
case NAS_PDN_CONNECTIVITY_FAIL: {
nas_proc_pdn_connectivity_fail(&NAS_PDN_CONNECTIVITY_FAIL(received_message_p));
}
break;
case TIMER_HAS_EXPIRED: {
#if !defined(DISABLE_USE_NAS)
/* Call the NAS timer api */
nas_timer_handle_signal_expiry(TIMER_HAS_EXPIRED(received_message_p).timer_id,
TIMER_HAS_EXPIRED(received_message_p).arg);
#endif
}
break;
case S1AP_ENB_DEREGISTERED_IND: {
#if !defined(DISABLE_USE_NAS)
int i;
for (i = 0; i < S1AP_ENB_DEREGISTERED_IND(received_message_p).nb_ue_to_deregister; i ++) {
nas_proc_deregister_ue(S1AP_ENB_DEREGISTERED_IND(received_message_p).mme_ue_s1ap_id[i]);
}
#endif
}
break;
case S1AP_DEREGISTER_UE_REQ: {
#if !defined(DISABLE_USE_NAS)
nas_proc_deregister_ue(S1AP_DEREGISTER_UE_REQ(received_message_p).mme_ue_s1ap_id);
#endif
}
break;
case TERMINATE_MESSAGE: {
itti_exit_task();
}
break;
default: {
NAS_DEBUG("Unkwnon message ID %d:%s from %s\n",
ITTI_MSG_ID(received_message_p),
ITTI_MSG_NAME(received_message_p),
ITTI_MSG_ORIGIN_NAME(received_message_p));
}
break;
}
itti_free(ITTI_MSG_ORIGIN_ID(received_message_p), received_message_p);
received_message_p = NULL;
}
return NULL;
}
