void *x2ap_task(void *arg)
{
MessageDef *received_msg = NULL;
int result;
X2AP_DEBUG("Starting X2AP layer\n");
x2ap_prepare_internal_data();
itti_mark_task_ready(TASK_X2AP);
while (1) {
itti_receive_msg(TASK_X2AP, &received_msg);
switch (ITTI_MSG_ID(received_msg)) {
case TERMINATE_MESSAGE:
itti_exit_task();
break;
default:
X2AP_ERROR("Received unhandled message: %d:%s\n",
ITTI_MSG_ID(received_msg), ITTI_MSG_NAME(received_msg));
break;
}
result = itti_free (ITTI_MSG_ORIGIN_ID(received_msg), received_msg);
AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
received_msg = NULL;
}
return NULL;
}
void *s6a_thread(void *args)
{
itti_mark_task_ready(TASK_S6A);
while(1) {
MessageDef *received_message_p = NULL;
/* Trying to fetch a message from the message queue.
* If the queue is empty, this function will block till a
* message is sent to the task.
*/
itti_receive_msg(TASK_S6A, &received_message_p);
DevAssert(received_message_p != NULL);
switch (ITTI_MSG_ID(received_message_p))
{
case S6A_UPDATE_LOCATION_REQ: {
s6a_generate_update_location(&received_message_p->ittiMsg.s6a_update_location_req);
} break;
case S6A_AUTH_INFO_REQ: {
s6a_generate_authentication_info_req(&received_message_p->ittiMsg.s6a_auth_info_req);
} break;
case TERMINATE_MESSAGE: {
itti_exit_task();
} break;
default: {
S6A_DEBUG("Unkwnon message ID %d:%s\n",
ITTI_MSG_ID(received_message_p), ITTI_MSG_NAME(received_message_p));
} break;
}
itti_free(ITTI_MSG_ORIGIN_ID(received_message_p), received_message_p);
received_message_p = NULL;
}
return NULL;
}
/*
* enb agent task mainly wakes up the tx thread for periodic and oneshot messages to the controller
* and can interact with other itti tasks
*/
void *flexran_agent_task(void *args){
//flexran_agent_instance_t *d = (flexran_agent_instance_t *) args;
Protocol__FlexranMessage *msg;
void *data;
int size;
err_code_t err_code;
int priority = 0;
MessageDef *msg_p = NULL;
const char *msg_name = NULL;
int result;
struct flexran_agent_timer_element_s * elem = NULL;
itti_mark_task_ready(TASK_FLEXRAN_AGENT);
do {
// Wait for a message
itti_receive_msg (TASK_FLEXRAN_AGENT, &msg_p);
DevAssert(msg_p != NULL);
msg_name = ITTI_MSG_NAME (msg_p);
switch (ITTI_MSG_ID(msg_p)) {
case TERMINATE_MESSAGE:
itti_exit_task ();
break;
case MESSAGE_TEST:
LOG_I(FLEXRAN_AGENT, "Received %s\n", ITTI_MSG_NAME(msg_p));
break;
case TIMER_HAS_EXPIRED:
msg = flexran_agent_process_timeout(msg_p->ittiMsg.timer_has_expired.timer_id, msg_p->ittiMsg.timer_has_expired.arg);
if (msg != NULL){
data=flexran_agent_pack_message(msg,&size);
elem = get_timer_entry(msg_p->ittiMsg.timer_has_expired.timer_id);
if (flexran_agent_msg_send(elem->agent_id, FLEXRAN_AGENT_DEFAULT, data, size, priority)) {
err_code = PROTOCOL__FLEXRAN_ERR__MSG_ENQUEUING;
goto error;
}
LOG_D(FLEXRAN_AGENT,"sent message with size %d\n", size);
}
break;
default:
LOG_E(FLEXRAN_AGENT, "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);
continue;
error:
LOG_E(FLEXRAN_AGENT,"flexran_agent_task: error %d occured\n",err_code);
} while (1);
return NULL;
}
static void *sctp_intertask_interface(void *args_p)
{
itti_mark_task_ready(TASK_SCTP);
MSC_START_USE();
while(1) {
MessageDef *received_message_p;
itti_receive_msg(TASK_SCTP, &received_message_p);
switch (ITTI_MSG_ID(received_message_p)) {
case SCTP_INIT_MSG: {
SCTP_DEBUG("Received SCTP_INIT_MSG\n");
/* We received a new connection request */
if (sctp_create_new_listener(&received_message_p->ittiMsg.sctpInit) < 0) {
/* SCTP socket creation or bind failed... */
SCTP_ERROR("Failed to create new SCTP listener\n");
}
}
break;
case SCTP_CLOSE_ASSOCIATION: {
} break;
case SCTP_DATA_REQ: {
if (sctp_send_msg(SCTP_DATA_REQ(received_message_p).assocId,
SCTP_DATA_REQ(received_message_p).stream,
SCTP_DATA_REQ(received_message_p).buffer,
SCTP_DATA_REQ(received_message_p).bufLen) < 0) {
SCTP_ERROR("Failed to send message over SCTP\n");
}
}
break;
case MESSAGE_TEST: {
// int i = 10000;
// while(i--);
} break;
case TERMINATE_MESSAGE: {
itti_exit_task();
}
break;
default: {
SCTP_DEBUG("Unkwnon message ID %d:%s\n",
ITTI_MSG_ID(received_message_p),
ITTI_MSG_NAME(received_message_p));
}
break;
}
itti_free(ITTI_MSG_ORIGIN_ID(received_message_p), received_message_p);
received_message_p = NULL;
}
return NULL;
}
static void *gtpv1u_thread(void *args)
{
itti_mark_task_ready(TASK_GTPV1_U);
MSC_START_USE();
while(1) {
/* Trying to fetch a message from the message queue.
* If the queue is empty, this function will block till a
* message is sent to the task.
*/
MessageDef *received_message_p = NULL;
itti_receive_msg(TASK_GTPV1_U, &received_message_p);
DevAssert(received_message_p != NULL);
switch (ITTI_MSG_ID(received_message_p)) {
case TERMINATE_MESSAGE: {
itti_exit_task();
}
break;
// DATA COMING FROM UDP
case UDP_DATA_IND: {
udp_data_ind_t *udp_data_ind_p;
udp_data_ind_p = &received_message_p->ittiMsg.udp_data_ind;
nwGtpv1uProcessUdpReq(gtpv1u_sgw_data.gtpv1u_stack,
udp_data_ind_p->buffer,
udp_data_ind_p->buffer_length,
udp_data_ind_p->peer_port,
udp_data_ind_p->peer_address);
//itti_free(ITTI_MSG_ORIGIN_ID(received_message_p), udp_data_ind_p->buffer);
}
break;
case TIMER_HAS_EXPIRED:
nwGtpv1uProcessTimeout(&received_message_p->ittiMsg.timer_has_expired.arg);
break;
default: {
GTPU_ERROR("Unkwnon message ID %d:%s\n",
ITTI_MSG_ID(received_message_p),
ITTI_MSG_NAME(received_message_p));
}
break;
}
itti_free(ITTI_MSG_ORIGIN_ID(received_message_p), received_message_p);
received_message_p = NULL;
}
return NULL;
}
//------------------------------------------------------------------------------
void *
msc_task (
void *args_p)
//------------------------------------------------------------------------------
{
MessageDef *received_message_p = NULL;
long timer_id;
itti_mark_task_ready (TASK_MSC);
msc_start_use ();
timer_setup (0, // seconds
50000, // usec
TASK_MSC, INSTANCE_DEFAULT, TIMER_PERIODIC, NULL, &timer_id);
while (1) {
itti_receive_msg (TASK_MSC, &received_message_p);
if (received_message_p != NULL) {
switch (ITTI_MSG_ID (received_message_p)) {
case TIMER_HAS_EXPIRED:{
msc_flush_messages ();
}
break;
case TERMINATE_MESSAGE:{
timer_remove (timer_id);
msc_end ();
itti_exit_task ();
}
break;
case MESSAGE_TEST:{
}
break;
default:{
}
break;
}
}
}
fprintf (stderr, "Task MSC exiting\n");
return NULL;
}
//------------------------------------------------------------------------------
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;
}
void *s1ap_eNB_task(void *arg)
{
MessageDef *received_msg = NULL;
int result;
S1AP_DEBUG("Starting S1AP layer\n");
s1ap_eNB_prepare_internal_data();
itti_mark_task_ready(TASK_S1AP);
MSC_START_USE();
while (1) {
itti_receive_msg(TASK_S1AP, &received_msg);
switch (ITTI_MSG_ID(received_msg)) {
case TERMINATE_MESSAGE:
itti_exit_task();
break;
case S1AP_REGISTER_ENB_REQ: {
/* Register a new eNB.
* in Virtual mode eNBs will be distinguished using the mod_id/
* Each eNB has to send an S1AP_REGISTER_ENB message with its
* own parameters.
*/
s1ap_eNB_handle_register_eNB(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&S1AP_REGISTER_ENB_REQ(received_msg));
}
break;
case SCTP_NEW_ASSOCIATION_RESP: {
s1ap_eNB_handle_sctp_association_resp(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&received_msg->ittiMsg.sctp_new_association_resp);
}
break;
case SCTP_DATA_IND: {
s1ap_eNB_handle_sctp_data_ind(&received_msg->ittiMsg.sctp_data_ind);
}
break;
case S1AP_NAS_FIRST_REQ: {
s1ap_eNB_handle_nas_first_req(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&S1AP_NAS_FIRST_REQ(received_msg));
}
break;
case S1AP_UPLINK_NAS: {
s1ap_eNB_nas_uplink(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&S1AP_UPLINK_NAS(received_msg));
}
break;
case S1AP_UE_CAPABILITIES_IND: {
s1ap_eNB_ue_capabilities(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&S1AP_UE_CAPABILITIES_IND(received_msg));
}
break;
case S1AP_INITIAL_CONTEXT_SETUP_RESP: {
s1ap_eNB_initial_ctxt_resp(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&S1AP_INITIAL_CONTEXT_SETUP_RESP(received_msg));
}
break;
case S1AP_E_RAB_SETUP_RESP: {
s1ap_eNB_e_rab_setup_resp(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&S1AP_E_RAB_SETUP_RESP(received_msg));
}
break;
case S1AP_NAS_NON_DELIVERY_IND: {
s1ap_eNB_nas_non_delivery_ind(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&S1AP_NAS_NON_DELIVERY_IND(received_msg));
}
break;
case S1AP_UE_CONTEXT_RELEASE_COMPLETE: {
s1ap_ue_context_release_complete(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&S1AP_UE_CONTEXT_RELEASE_COMPLETE(received_msg));
}
break;
case S1AP_UE_CONTEXT_RELEASE_REQ: {
s1ap_eNB_instance_t *s1ap_eNB_instance_p = NULL; // test
struct s1ap_eNB_ue_context_s *ue_context_p = NULL; // test
s1ap_ue_context_release_req(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&S1AP_UE_CONTEXT_RELEASE_REQ(received_msg));
s1ap_eNB_instance_p = s1ap_eNB_get_instance(ITTI_MESSAGE_GET_INSTANCE(received_msg)); // test
DevAssert(s1ap_eNB_instance_p != NULL); // test
if ((ue_context_p = s1ap_eNB_get_ue_context(s1ap_eNB_instance_p,
S1AP_UE_CONTEXT_RELEASE_REQ(received_msg).eNB_ue_s1ap_id)) == NULL) { // test
/* The context for this eNB ue s1ap id doesn't exist in the map of eNB UEs */
S1AP_ERROR("Failed to find ue context associated with eNB ue s1ap id: %u\n",
S1AP_UE_CONTEXT_RELEASE_REQ(received_msg).eNB_ue_s1ap_id); // test
} // test
}
break;
default:
S1AP_ERROR("Received unhandled message: %d:%s\n",
ITTI_MSG_ID(received_msg), ITTI_MSG_NAME(received_msg));
break;
}
result = itti_free (ITTI_MSG_ORIGIN_ID(received_msg), received_msg);
AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
received_msg = NULL;
}
return NULL;
}
static void *s11_sgw_thread(void *args)
{
itti_mark_task_ready(TASK_S11);
while(1) {
MessageDef *received_message_p = NULL;
itti_receive_msg(TASK_S11, &received_message_p);
assert(received_message_p != NULL);
switch (ITTI_MSG_ID(received_message_p)) {
case UDP_DATA_IND: {
/* We received new data to handle from the UDP layer */
NwRcT rc;
udp_data_ind_t *udp_data_ind;
udp_data_ind = &received_message_p->ittiMsg.udp_data_ind;
S11_DEBUG("Processing new data indication from UDP\n");
rc = nwGtpv2cProcessUdpReq(s11_sgw_stack_handle,
udp_data_ind->buffer,
udp_data_ind->buffer_length,
udp_data_ind->peer_port,
udp_data_ind->peer_address);
DevAssert(rc == NW_OK);
}
break;
case SGW_CREATE_SESSION_RESPONSE: {
S11_DEBUG("Received create session response from S-PGW APP\n");
s11_sgw_handle_create_session_response(
&s11_sgw_stack_handle,
&received_message_p->ittiMsg.sgwCreateSessionResponse);
}
break;
case SGW_MODIFY_BEARER_RESPONSE: {
S11_DEBUG("Received modify bearer response from S-PGW APP\n");
s11_sgw_handle_modify_bearer_response(
&s11_sgw_stack_handle,
&received_message_p->ittiMsg.sgwModifyBearerResponse);
}
break;
case SGW_DELETE_SESSION_RESPONSE: {
S11_DEBUG("Received delete session response from S-PGW APP\n");
s11_sgw_handle_delete_session_response(
&s11_sgw_stack_handle,
&received_message_p->ittiMsg.sgwDeleteSessionResponse);
}
break;
case TIMER_HAS_EXPIRED: {
S11_DEBUG("Processing timeout for timer_id 0x%lx and arg %p\n",
received_message_p->ittiMsg.timer_has_expired.timer_id,
received_message_p->ittiMsg.timer_has_expired.arg);
DevAssert(nwGtpv2cProcessTimeout(received_message_p->ittiMsg.timer_has_expired.arg) == NW_OK);
}
break;
default: {
S11_ERROR("Unkwnon message ID %d:%s\n",
ITTI_MSG_ID(received_message_p), ITTI_MSG_NAME(received_message_p));
}
break;
}
itti_free(ITTI_MSG_ORIGIN_ID(received_message_p), received_message_p);
received_message_p = NULL;
}
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;
}
//-----------------------------------------------------------------------------
void *gtpv1u_eNB_task(void *args)
{
int rc = 0;
instance_t instance;
//const char *msg_name_p;
rc = gtpv1u_eNB_init();
AssertFatal(rc == 0, "gtpv1u_eNB_init Failed");
itti_mark_task_ready(TASK_GTPV1_U);
MSC_START_USE();
while(1) {
/* Trying to fetch a message from the message queue.
* If the queue is empty, this function will block till a
* message is sent to the task.
*/
MessageDef *received_message_p = NULL;
itti_receive_msg(TASK_GTPV1_U, &received_message_p);
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_GTPV1U_ENB_TASK, VCD_FUNCTION_IN);
DevAssert(received_message_p != NULL);
instance = ITTI_MSG_INSTANCE(received_message_p);
//msg_name_p = ITTI_MSG_NAME(received_message_p);
switch (ITTI_MSG_ID(received_message_p)) {
case GTPV1U_ENB_DELETE_TUNNEL_REQ: {
gtpv1u_delete_s1u_tunnel(instance, &received_message_p->ittiMsg.Gtpv1uDeleteTunnelReq);
}
break;
// DATA COMING FROM UDP
case UDP_DATA_IND: {
udp_data_ind_t *udp_data_ind_p;
udp_data_ind_p = &received_message_p->ittiMsg.udp_data_ind;
nwGtpv1uProcessUdpReq(gtpv1u_data_g.gtpv1u_stack,
udp_data_ind_p->buffer,
udp_data_ind_p->buffer_length,
udp_data_ind_p->peer_port,
udp_data_ind_p->peer_address);
//itti_free(ITTI_MSG_ORIGIN_ID(received_message_p), udp_data_ind_p->buffer);
}
break;
// DATA TO BE SENT TO UDP
case GTPV1U_ENB_TUNNEL_DATA_REQ: {
gtpv1u_enb_tunnel_data_req_t *data_req_p = NULL;
NwGtpv1uUlpApiT stack_req;
NwGtpv1uRcT rc = NW_GTPV1U_FAILURE;
hashtable_rc_t hash_rc = HASH_TABLE_KEY_NOT_EXISTS;
gtpv1u_ue_data_t *gtpv1u_ue_data_p = NULL;
teid_t enb_s1u_teid = 0;
teid_t sgw_s1u_teid = 0;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_GTPV1U_PROCESS_TUNNEL_DATA_REQ, VCD_FUNCTION_IN);
data_req_p = >PV1U_ENB_TUNNEL_DATA_REQ(received_message_p);
//ipv4_send_data(ipv4_data_p->sd, data_ind_p->buffer, data_ind_p->length);
#if defined(GTP_DUMP_SOCKET) && GTP_DUMP_SOCKET > 0
gtpv1u_eNB_write_dump_socket(&data_req_p->buffer[data_req_p->offset],data_req_p->length);
#endif
memset(&stack_req, 0, sizeof(NwGtpv1uUlpApiT));
hash_rc = hashtable_get(gtpv1u_data_g.ue_mapping, (uint64_t)data_req_p->rnti, (void**)>pv1u_ue_data_p);
if (hash_rc == HASH_TABLE_KEY_NOT_EXISTS) {
LOG_E(GTPU, "nwGtpv1uProcessUlpReq failed: while getting ue rnti %x in hashtable ue_mapping\n", data_req_p->rnti);
} else {
if ((data_req_p->rab_id >= GTPV1U_BEARER_OFFSET) && (data_req_p->rab_id <= max_val_DRB_Identity)) {
enb_s1u_teid = gtpv1u_ue_data_p->bearers[data_req_p->rab_id - GTPV1U_BEARER_OFFSET].teid_eNB;
sgw_s1u_teid = gtpv1u_ue_data_p->bearers[data_req_p->rab_id - GTPV1U_BEARER_OFFSET].teid_sgw;
stack_req.apiType = NW_GTPV1U_ULP_API_SEND_TPDU;
stack_req.apiInfo.sendtoInfo.teid = sgw_s1u_teid;
stack_req.apiInfo.sendtoInfo.ipAddr = gtpv1u_ue_data_p->bearers[data_req_p->rab_id - GTPV1U_BEARER_OFFSET].sgw_ip_addr;
rc = nwGtpv1uGpduMsgNew(
gtpv1u_data_g.gtpv1u_stack,
sgw_s1u_teid,
NW_FALSE,
gtpv1u_data_g.seq_num++,
data_req_p->buffer,
data_req_p->length,
data_req_p->offset,
&(stack_req.apiInfo.sendtoInfo.hMsg));
if (rc != NW_GTPV1U_OK) {
LOG_E(GTPU, "nwGtpv1uGpduMsgNew failed: 0x%x\n", rc);
MSC_LOG_EVENT(MSC_GTPU_ENB,"0 Failed send G-PDU ltid %u rtid %u size %u",
enb_s1u_teid,sgw_s1u_teid,data_req_p->length);
(void)enb_s1u_teid; /* avoid gcc warning "set but not used" */
} else {
rc = nwGtpv1uProcessUlpReq(gtpv1u_data_g.gtpv1u_stack, &stack_req);
if (rc != NW_GTPV1U_OK) {
LOG_E(GTPU, "nwGtpv1uProcessUlpReq failed: 0x%x\n", rc);
MSC_LOG_EVENT(MSC_GTPU_ENB,"0 Failed send G-PDU ltid %u rtid %u size %u",
enb_s1u_teid,sgw_s1u_teid,data_req_p->length);
} else {
MSC_LOG_TX_MESSAGE(
MSC_GTPU_ENB,
MSC_GTPU_SGW,
NULL,
0,
MSC_AS_TIME_FMT" G-PDU ltid %u rtid %u size %u",
0,0,
enb_s1u_teid,
sgw_s1u_teid,
data_req_p->length);
}
rc = nwGtpv1uMsgDelete(gtpv1u_data_g.gtpv1u_stack,
stack_req.apiInfo.sendtoInfo.hMsg);
if (rc != NW_GTPV1U_OK) {
LOG_E(GTPU, "nwGtpv1uMsgDelete failed: 0x%x\n", rc);
}
}
}
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_GTPV1U_PROCESS_TUNNEL_DATA_REQ, VCD_FUNCTION_OUT);
/* Buffer still needed, do not free it */
//itti_free(ITTI_MSG_ORIGIN_ID(received_message_p), data_req_p->buffer);
}
break;
case TERMINATE_MESSAGE: {
if (gtpv1u_data_g.ue_mapping != NULL) {
hashtable_destroy (gtpv1u_data_g.ue_mapping);
}
if (gtpv1u_data_g.teid_mapping != NULL) {
hashtable_destroy (gtpv1u_data_g.teid_mapping);
}
itti_exit_task();
}
break;
case TIMER_HAS_EXPIRED:
nwGtpv1uProcessTimeout(&received_message_p->ittiMsg.timer_has_expired.arg);
break;
default: {
LOG_E(GTPU, "Unkwnon message ID %d:%s\n",
ITTI_MSG_ID(received_message_p),
ITTI_MSG_NAME(received_message_p));
}
break;
}
rc = itti_free(ITTI_MSG_ORIGIN_ID(received_message_p), received_message_p);
AssertFatal(rc == EXIT_SUCCESS, "Failed to free memory (%d)!\n", rc);
received_message_p = NULL;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_GTPV1U_ENB_TASK, VCD_FUNCTION_OUT);
}
return NULL;
}
void *nas_ue_task(void *args_p) {
int nb_events;
struct epoll_event *events;
MessageDef *msg_p;
const char *msg_name;
instance_t instance;
unsigned int Mod_id;
int result;
itti_mark_task_ready (TASK_NAS_UE);
/* Initialize UE NAS (EURECOM-NAS) */
{
/* Initialize user interface (to exchange AT commands with user process) */
{
if (user_api_initialize (NAS_PARSER_DEFAULT_USER_HOSTNAME, NAS_PARSER_DEFAULT_USER_PORT_NUMBER, NULL,
NULL) != RETURNok) {
LOG_E(NAS, "[UE] user interface initialization failed!");
exit (EXIT_FAILURE);
}
user_fd = user_api_get_fd ();
itti_subscribe_event_fd (TASK_NAS_UE, user_fd);
}
/* Initialize NAS user */
nas_user_initialize (&user_api_emm_callback, &user_api_esm_callback, FIRMWARE_VERSION);
}
/* Set UE activation state */
for (instance = NB_eNB_INST; instance < (NB_eNB_INST + NB_UE_INST); instance++)
{
MessageDef *message_p;
message_p = itti_alloc_new_message(TASK_NAS_UE, DEACTIVATE_MESSAGE);
itti_send_msg_to_task(TASK_L2L1, instance, message_p);
}
while(1) {
// Wait for a message or an event
itti_receive_msg (TASK_NAS_UE, &msg_p);
if (msg_p != NULL) {
msg_name = ITTI_MSG_NAME (msg_p);
instance = ITTI_MSG_INSTANCE (msg_p);
Mod_id = instance - NB_eNB_INST;
switch (ITTI_MSG_ID(msg_p)) {
case INITIALIZE_MESSAGE:
LOG_I(NAS, "[UE %d] Received %s\n", Mod_id, msg_name);
#if (NAS_UE_AUTOSTART != 0)
{
/* Send an activate modem command to NAS like UserProcess should do it */
char *user_data = "at+cfun=1\r";
nas_user_receive_and_process (&user_fd, user_data);
}
#endif
break;
case TERMINATE_MESSAGE:
itti_exit_task ();
break;
case MESSAGE_TEST:
LOG_I(NAS, "[UE %d] Received %s\n", Mod_id, msg_name);
break;
case NAS_CELL_SELECTION_CNF:
LOG_I(NAS, "[UE %d] Received %s: errCode %u, cellID %u, tac %u\n", Mod_id, msg_name,
NAS_CELL_SELECTION_CNF (msg_p).errCode, NAS_CELL_SELECTION_CNF (msg_p).cellID, NAS_CELL_SELECTION_CNF (msg_p).tac);
{
int cell_found = (NAS_CELL_SELECTION_CNF (msg_p).errCode == AS_SUCCESS);
nas_proc_cell_info (cell_found, NAS_CELL_SELECTION_CNF (msg_p).tac,
NAS_CELL_SELECTION_CNF (msg_p).cellID, NAS_CELL_SELECTION_CNF (msg_p).rat,
NAS_CELL_SELECTION_CNF (msg_p).rsrq, NAS_CELL_SELECTION_CNF (msg_p).rsrp);
}
break;
case NAS_CELL_SELECTION_IND:
LOG_I(NAS, "[UE %d] Received %s: cellID %u, tac %u\n", Mod_id, msg_name,
NAS_CELL_SELECTION_IND (msg_p).cellID, NAS_CELL_SELECTION_IND (msg_p).tac);
/* TODO not processed by NAS currently */
break;
case NAS_PAGING_IND:
LOG_I(NAS, "[UE %d] Received %s: cause %u\n", Mod_id, msg_name,
NAS_PAGING_IND (msg_p).cause);
/* TODO not processed by NAS currently */
break;
case NAS_CONN_ESTABLI_CNF:
LOG_I(NAS, "[UE %d] Received %s: errCode %u, length %u\n", Mod_id, msg_name,
NAS_CONN_ESTABLI_CNF (msg_p).errCode, NAS_CONN_ESTABLI_CNF (msg_p).nasMsg.length);
if ((NAS_CONN_ESTABLI_CNF (msg_p).errCode == AS_SUCCESS)
|| (NAS_CONN_ESTABLI_CNF (msg_p).errCode == AS_TERMINATED_NAS)) {
nas_proc_establish_cnf(NAS_CONN_ESTABLI_CNF (msg_p).nasMsg.data, NAS_CONN_ESTABLI_CNF (msg_p).nasMsg.length);
/* TODO checks if NAS will free the nas message, better to do it there anyway! */
// result = itti_free (ITTI_MSG_ORIGIN_ID(msg_p), NAS_CONN_ESTABLI_CNF(msg_p).nasMsg.data);
// AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
}
break;
case NAS_CONN_RELEASE_IND:
LOG_I(NAS, "[UE %d] Received %s: cause %u\n", Mod_id, msg_name,
NAS_CONN_RELEASE_IND (msg_p).cause);
nas_proc_release_ind (NAS_CONN_RELEASE_IND (msg_p).cause);
break;
case NAS_UPLINK_DATA_CNF:
LOG_I(NAS, "[UE %d] Received %s: UEid %u, errCode %u\n", Mod_id, msg_name,
NAS_UPLINK_DATA_CNF (msg_p).UEid, NAS_UPLINK_DATA_CNF (msg_p).errCode);
if (NAS_UPLINK_DATA_CNF (msg_p).errCode == AS_SUCCESS) {
nas_proc_ul_transfer_cnf ();
} else {
nas_proc_ul_transfer_rej ();
}
break;
case NAS_DOWNLINK_DATA_IND:
LOG_I(NAS, "[UE %d] Received %s: UEid %u, length %u\n", Mod_id, msg_name,
NAS_DOWNLINK_DATA_IND (msg_p).UEid, NAS_DOWNLINK_DATA_IND (msg_p).nasMsg.length);
nas_proc_dl_transfer_ind (NAS_DOWNLINK_DATA_IND(msg_p).nasMsg.data, NAS_DOWNLINK_DATA_IND(msg_p).nasMsg.length);
if (0) {
/* TODO checks if NAS will free the nas message, better to do it there anyway! */
result = itti_free (ITTI_MSG_ORIGIN_ID(msg_p), NAS_DOWNLINK_DATA_IND(msg_p).nasMsg.data);
AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
}
break;
default:
LOG_E(NAS, "[UE %d] Received unexpected message %s\n", Mod_id, 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);
msg_p = NULL;
}
nb_events = itti_get_events(TASK_NAS_UE, &events);
if ((nb_events > 0) && (events != NULL)) {
if (nas_ue_process_events(events, nb_events) == TRUE) {
LOG_E(NAS, "[UE] Received exit loop\n");
}
}
}
}