/* * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The OpenAirInterface Software Alliance licenses this file to You under * the OAI Public License, Version 1.1 (the "License"); you may not use this file * except in compliance with the License. * You may obtain a copy of the License at * * http://www.openairinterface.org/?page_id=698 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. *------------------------------------------------------------------------------- * For more information about the OpenAirInterface (OAI) Software Alliance: * contact@openairinterface.org */ /* enb_app.c ------------------- AUTHOR : Laurent Winckel, Sebastien ROUX, Lionel GAUTHIER, Navid Nikaein COMPANY : EURECOM EMAIL : Lionel.Gauthier@eurecom.fr and Navid Nikaein */ #include <string.h> #include <stdio.h> #include "enb_app.h" #include "enb_config.h" #include "assertions.h" #include "common/ran_context.h" #include "targets/RT/USER/lte-softmodem.h" #include "common/utils/LOG/log.h" # include "intertask_interface.h" # include "s1ap_eNB.h" # include "sctp_eNB_task.h" # include "gtpv1u_eNB_task.h" # include "flexran_agent.h" # include "x2ap_eNB.h" # include "x2ap_messages_types.h" # include "m2ap_eNB.h" # include "m2ap_messages_types.h" # define X2AP_ENB_REGISTER_RETRY_DELAY 10 #include "openair1/PHY/INIT/phy_init.h" extern unsigned char NB_eNB_INST; #include <nr-softmodem.h> extern RAN_CONTEXT_t RC; # define ENB_REGISTER_RETRY_DELAY 10 #include "targets/RT/USER/lte-softmodem.h" /*************************** ENB M2AP **************************/ //static uint32_t eNB_app_register_MBMS_STA(ngran_node_t node_type,uint32_t enb_id_start, uint32_t enb_id_end) { // uint32_t enb_id; // //MessageDef *msg_p; // uint32_t register_enb_pending = 0; // // for (enb_id = enb_id_start; (enb_id < enb_id_end) ; enb_id++) { // { // // //msg_p = itti_alloc_new_message (TASK_ENB_APP, S1AP_REGISTER_ENB_REQ); // //RCconfig_S1(msg_p, enb_id); // // if (enb_id == 0) RCconfig_gtpu(); // // //LOG_I(ENB_APP,"default drx %d\n",((S1AP_REGISTER_ENB_REQ(msg_p)).default_drx)); // // //LOG_I(ENB_APP,"[eNB %d] eNB_app_register via S1AP for instance %d\n", enb_id, ENB_MODULE_ID_TO_INSTANCE(enb_id)); // //itti_send_msg_to_task (TASK_S1AP, ENB_MODULE_ID_TO_INSTANCE(enb_id), msg_p); // // register_enb_pending++; // } // } // // return register_enb_pending; //} //*****end M2AP ****/ static uint32_t eNB_app_register_m2(uint32_t enb_id_start, uint32_t enb_id_end) { uint32_t enb_id; MessageDef *msg_p; uint32_t register_enb_m2_pending = 0; // msg_p = itti_alloc_new_message (TASK_ENB_APP,MESSAGE_TEST ); // itti_send_msg_to_task (TASK_M2AP_MCE, ENB_MODULE_ID_TO_INSTANCE(enb_id), msg_p); LOG_D(ENB_APP,"Register ...\n"); for (enb_id = enb_id_start; (enb_id < enb_id_end) ; enb_id++) { { msg_p = itti_alloc_new_message (TASK_ENB_APP, M2AP_REGISTER_ENB_REQ); RCconfig_M2(msg_p, enb_id); itti_send_msg_to_task (TASK_M2AP_ENB, ENB_MODULE_ID_TO_INSTANCE(enb_id), msg_p); register_enb_m2_pending++; } } return register_enb_m2_pending; } /*************************** M2AP ENB handle **********************************/ static uint32_t eNB_app_handle_m2ap_mbms_scheduling_information(instance_t instance){ //uint32_t mce_id=0; MessageDef *msg_p; msg_p = itti_alloc_new_message (TASK_ENB_APP, M2AP_MBMS_SCHEDULING_INFORMATION_RESP); itti_send_msg_to_task (TASK_M2AP_ENB, ENB_MODULE_ID_TO_INSTANCE(instance), msg_p); return 0; } static uint32_t eNB_app_handle_m2ap_mbms_session_start_req(instance_t instance){ //uint32_t mce_id=0; MessageDef *msg_p; msg_p = itti_alloc_new_message (TASK_ENB_APP, M2AP_MBMS_SESSION_START_RESP); itti_send_msg_to_task (TASK_M2AP_ENB, ENB_MODULE_ID_TO_INSTANCE(instance), msg_p); return 0; } static uint32_t eNB_app_handle_m2ap_mbms_session_stop_req(instance_t instance){ //uint32_t mce_id=0; MessageDef *msg_p; msg_p = itti_alloc_new_message (TASK_ENB_APP, M2AP_MBMS_SESSION_STOP_RESP); itti_send_msg_to_task (TASK_M2AP_ENB, ENB_MODULE_ID_TO_INSTANCE(instance), msg_p); return 0; } static uint32_t eNB_app_handle_m2ap_mbms_session_update_req(instance_t instance){ //uint32_t mce_id=0; MessageDef *msg_p; msg_p = itti_alloc_new_message (TASK_ENB_APP, M2AP_MBMS_SESSION_UPDATE_RESP); itti_send_msg_to_task (TASK_M2AP_ENB, ENB_MODULE_ID_TO_INSTANCE(instance), msg_p); return 0; } //// end M2AP ENB handle **********************************/ /*------------------------------------------------------------------------------*/ static uint32_t eNB_app_register(ngran_node_t node_type,uint32_t enb_id_start, uint32_t enb_id_end) { uint32_t enb_id; MessageDef *msg_p; uint32_t register_enb_pending = 0; for (enb_id = enb_id_start; (enb_id < enb_id_end) ; enb_id++) { { if (NODE_IS_DU(node_type)) { // F1AP registration // configure F1AP here for F1C LOG_I(ENB_APP,"ngran_eNB_DU: Allocating ITTI message for F1AP_SETUP_REQ\n"); msg_p = itti_alloc_new_message (TASK_ENB_APP, F1AP_SETUP_REQ); RCconfig_DU_F1(msg_p, enb_id); LOG_I(ENB_APP,"[eNB %d] eNB_app_register via F1AP for instance %d\n", enb_id, ENB_MODULE_ID_TO_INSTANCE(enb_id)); itti_send_msg_to_task (TASK_DU_F1, ENB_MODULE_ID_TO_INSTANCE(enb_id), msg_p); // configure GTPu here for F1U } else { // S1AP registration /* note: there is an implicit relationship between the data structure and the message name */ msg_p = itti_alloc_new_message (TASK_ENB_APP, S1AP_REGISTER_ENB_REQ); RCconfig_S1(msg_p, enb_id); if (enb_id == 0) RCconfig_gtpu(); LOG_I(ENB_APP,"default drx %d\n",((S1AP_REGISTER_ENB_REQ(msg_p)).default_drx)); LOG_I(ENB_APP,"[eNB %d] eNB_app_register via S1AP for instance %d\n", enb_id, ENB_MODULE_ID_TO_INSTANCE(enb_id)); itti_send_msg_to_task (TASK_S1AP, ENB_MODULE_ID_TO_INSTANCE(enb_id), msg_p); } register_enb_pending++; } } return register_enb_pending; } /*------------------------------------------------------------------------------*/ static uint32_t eNB_app_register_x2(uint32_t enb_id_start, uint32_t enb_id_end) { uint32_t enb_id; MessageDef *msg_p; uint32_t register_enb_x2_pending = 0; for (enb_id = enb_id_start; (enb_id < enb_id_end) ; enb_id++) { { msg_p = itti_alloc_new_message (TASK_ENB_APP, X2AP_REGISTER_ENB_REQ); RCconfig_X2(msg_p, enb_id); itti_send_msg_to_task (TASK_X2AP, ENB_MODULE_ID_TO_INSTANCE(enb_id), msg_p); register_enb_x2_pending++; } } return register_enb_x2_pending; } /*------------------------------------------------------------------------------*/ void *eNB_app_task(void *args_p) { uint32_t enb_nb = RC.nb_inst; uint32_t enb_id_start = 0; uint32_t enb_id_end = enb_id_start + enb_nb; uint32_t register_enb_pending=0; uint32_t registered_enb=0; long enb_register_retry_timer_id; uint32_t x2_register_enb_pending = 0; uint32_t x2_registered_enb = 0; long x2_enb_register_retry_timer_id; uint32_t m2_register_enb_pending = 0; uint32_t m2_registered_enb = 0; //long m2_enb_register_retry_timer_id; MessageDef *msg_p = NULL; instance_t instance; int result; /* for no gcc warnings */ (void)instance; itti_mark_task_ready (TASK_ENB_APP); /* Try to register each eNB */ // This assumes that node_type of all RRC instances is the same if (EPC_MODE_ENABLED) { register_enb_pending = eNB_app_register(RC.rrc[0]->node_type, enb_id_start, enb_id_end); } /* Try to register each eNB with each other */ if (is_x2ap_enabled() && !NODE_IS_DU(RC.rrc[0]->node_type)) { x2_register_enb_pending = eNB_app_register_x2 (enb_id_start, enb_id_end); } /* Try to register each eNB with MCE each other */ if (is_m2ap_eNB_enabled() /*&& !NODE_IS_DU(RC.rrc[0]->node_type)*/) { //eNB_app_register_MBMS_STA(RC.rrc[0]->node_type, enb_id_start, enb_id_end); m2_register_enb_pending = eNB_app_register_m2 (enb_id_start, enb_id_end); //if (timer_setup (5, 0, TASK_ENB_APP, INSTANCE_DEFAULT, TIMER_ONE_SHOT, // NULL, &m2_enb_register_retry_timer_id) < 0) { //} } do { // Wait for a message itti_receive_msg (TASK_ENB_APP, &msg_p); instance = ITTI_MSG_INSTANCE (msg_p); switch (ITTI_MSG_ID(msg_p)) { case TERMINATE_MESSAGE: LOG_W(ENB_APP, " *** Exiting ENB_APP thread\n"); itti_exit_task (); break; case MESSAGE_TEST: LOG_I(ENB_APP, "Received %s\n", ITTI_MSG_NAME(msg_p)); break; case SOFT_RESTART_MESSAGE: handle_reconfiguration(instance); break; case S1AP_REGISTER_ENB_CNF: AssertFatal(!NODE_IS_DU(RC.rrc[0]->node_type), "Should not have received S1AP_REGISTER_ENB_CNF\n"); if (EPC_MODE_ENABLED) { LOG_I(ENB_APP, "[eNB %d] Received %s: associated MME %d\n", instance, ITTI_MSG_NAME (msg_p), S1AP_REGISTER_ENB_CNF(msg_p).nb_mme); 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) { /* If all eNB are registered, start L2L1 task */ MessageDef *msg_init_p; msg_init_p = itti_alloc_new_message (TASK_ENB_APP, INITIALIZE_MESSAGE); itti_send_msg_to_task (TASK_L2L1, INSTANCE_DEFAULT, msg_init_p); } else { LOG_W(ENB_APP, " %d eNB not associated with a MME, retrying registration in %d seconds ...\n", enb_nb - registered_enb, 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 (RC.rrc[0]->node_type,enb_id_start, enb_id_end); } } } } /* if (EPC_MODE_ENABLED) */ break; case F1AP_SETUP_RESP: AssertFatal(NODE_IS_DU(RC.rrc[0]->node_type), "Should not have received F1AP_REGISTER_ENB_CNF in CU/eNB\n"); LOG_I(ENB_APP, "Received %s: associated ngran_eNB_CU %s with %d cells to activate\n", ITTI_MSG_NAME (msg_p), F1AP_SETUP_RESP(msg_p).gNB_CU_name,F1AP_SETUP_RESP(msg_p).num_cells_to_activate); handle_f1ap_setup_resp(&F1AP_SETUP_RESP(msg_p)); DevAssert(register_enb_pending > 0); register_enb_pending--; /* Check if at least eNB is registered with one MME */ if (F1AP_SETUP_RESP(msg_p).num_cells_to_activate > 0) { registered_enb++; } /* Check if all register eNB requests have been processed */ if (register_enb_pending == 0) { if (registered_enb == enb_nb) { /* If all eNB cells are registered, start L2L1 task */ MessageDef *msg_init_p; msg_init_p = itti_alloc_new_message (TASK_ENB_APP, INITIALIZE_MESSAGE); itti_send_msg_to_task (TASK_L2L1, INSTANCE_DEFAULT, msg_init_p); } else { LOG_W(ENB_APP, " %d eNB not associated with a MME, retrying registration in %d seconds ...\n", enb_nb - registered_enb, 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 (RC.rrc[0]->node_type,enb_id_start, enb_id_end);//, enb_properties_p); } } } break; case S1AP_DEREGISTERED_ENB_IND: if (EPC_MODE_ENABLED) { LOG_W(ENB_APP, "[eNB %d] Received %s: associated MME %d\n", instance, ITTI_MSG_NAME (msg_p), S1AP_DEREGISTERED_ENB_IND(msg_p).nb_mme); /* TODO handle recovering of registration */ } break; case TIMER_HAS_EXPIRED: if (EPC_MODE_ENABLED) { LOG_I(ENB_APP, " Received %s: timer_id %ld\n", ITTI_MSG_NAME (msg_p), 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 (RC.rrc[0]->node_type, enb_id_start, enb_id_end); } if (TIMER_HAS_EXPIRED (msg_p).timer_id == x2_enb_register_retry_timer_id) { /* Restart the registration process */ x2_registered_enb = 0; x2_register_enb_pending = eNB_app_register_x2 (enb_id_start, enb_id_end); } } /* if (EPC_MODE_ENABLED) */ // if(TIMER_HAS_EXPIRED (msg_p).timer_id == m2_enb_register_retry_timer_id) { // // LOG_I(ENB_APP, " Received %s: timer_id %ld M2 register\n", ITTI_MSG_NAME (msg_p), TIMER_HAS_EXPIRED(msg_p).timer_id); // m2_register_enb_pending = eNB_app_register_m2 (enb_id_start, enb_id_end); // } break; case X2AP_DEREGISTERED_ENB_IND: LOG_W(ENB_APP, "[eNB %d] Received %s: associated eNB %d\n", instance, ITTI_MSG_NAME (msg_p), X2AP_DEREGISTERED_ENB_IND(msg_p).nb_x2); /* TODO handle recovering of registration */ break; case X2AP_REGISTER_ENB_CNF: LOG_I(ENB_APP, "[eNB %d] Received %s: associated eNB %d\n", instance, ITTI_MSG_NAME (msg_p), X2AP_REGISTER_ENB_CNF(msg_p).nb_x2); DevAssert(x2_register_enb_pending > 0); x2_register_enb_pending--; /* Check if at least eNB is registered with one target eNB */ if (X2AP_REGISTER_ENB_CNF(msg_p).nb_x2 > 0) { x2_registered_enb++; } /* Check if all register eNB requests have been processed */ if (x2_register_enb_pending == 0) { if (x2_registered_enb == enb_nb) { /* If all eNB are registered, start RRC HO task */ } else { uint32_t x2_not_associated = enb_nb - x2_registered_enb; LOG_W(ENB_APP, " %d eNB %s not associated with the target\n", x2_not_associated, x2_not_associated > 1 ? "are" : "is"); // timer to retry /* Restart the eNB registration process in ENB_REGISTER_RETRY_DELAY seconds */ if (timer_setup (X2AP_ENB_REGISTER_RETRY_DELAY, 0, TASK_ENB_APP, INSTANCE_DEFAULT, TIMER_ONE_SHOT, NULL, &x2_enb_register_retry_timer_id) < 0) { LOG_E(ENB_APP, " Can not start eNB X2AP register: retry timer, use \"sleep\" instead!\n"); sleep(X2AP_ENB_REGISTER_RETRY_DELAY); /* Restart the registration process */ x2_registered_enb = 0; x2_register_enb_pending = eNB_app_register_x2 (enb_id_start, enb_id_end); } } } break; case M2AP_DEREGISTERED_ENB_IND: LOG_W(ENB_APP, "[eNB %d] Received %s: associated eNB %d\n", instance, ITTI_MSG_NAME (msg_p), M2AP_DEREGISTERED_ENB_IND(msg_p).nb_m2); /* TODO handle recovering of registration */ break; case M2AP_REGISTER_ENB_CNF: LOG_W(ENB_APP, "[eNB %d] Received %s: associated eNB %d\n", instance, ITTI_MSG_NAME (msg_p), M2AP_REGISTER_ENB_CNF(msg_p).nb_m2); DevAssert(m2_register_enb_pending > 0); m2_register_enb_pending--; /* Check if at least eNB is registered with one target eNB */ if (M2AP_REGISTER_ENB_CNF(msg_p).nb_m2 > 0) { m2_registered_enb++; } /* Check if all register eNB requests have been processed */ if (m2_register_enb_pending == 0) { if (m2_registered_enb == enb_nb) { /* If all eNB are registered, start RRC HO task */ } else { uint32_t m2_not_associated = enb_nb - m2_registered_enb; LOG_W(ENB_APP, " %d eNB %s not associated with the target\n", m2_not_associated, m2_not_associated > 1 ? "are" : "is"); // timer to retry /* Restart the eNB registration process in ENB_REGISTER_RETRY_DELAY seconds */ //if (timer_setup (X2AP_ENB_REGISTER_RETRY_DELAY, 0, TASK_ENB_APP, // INSTANCE_DEFAULT, TIMER_ONE_SHOT, NULL, // &x2_enb_register_retry_timer_id) < 0) { // LOG_E(ENB_APP, " Can not start eNB X2AP register: retry timer, use \"sleep\" instead!\n"); // sleep(X2AP_ENB_REGISTER_RETRY_DELAY); // /* Restart the registration process */ // x2_registered_enb = 0; // x2_register_enb_pending = eNB_app_register_x2 (enb_id_start, enb_id_end); //} } } break; case M2AP_SETUP_RESP: LOG_I(ENB_APP,"M2AP_SETUP_RESP RESPONSE received\n"); // AssertFatal(NODE_IS_DU(RC.rrc[0]->node_type), "Should not have received F1AP_REGISTER_ENB_CNF in CU/eNB\n"); // LOG_I(ENB_APP, "Received %s: associated ngran_eNB_CU %s with %d cells to activate\n", ITTI_MSG_NAME (msg_p), // F1AP_SETUP_RESP(msg_p).gNB_CU_name,F1AP_SETUP_RESP(msg_p).num_cells_to_activate); // // handle_f1ap_setup_resp(&F1AP_SETUP_RESP(msg_p)); // DevAssert(register_enb_pending > 0); // register_enb_pending--; // /* Check if at least eNB is registered with one MME */ // if (F1AP_SETUP_RESP(msg_p).num_cells_to_activate > 0) { // registered_enb++; // } // /* Check if all register eNB requests have been processed */ // if (register_enb_pending == 0) { // if (registered_enb == enb_nb) { // /* If all eNB cells are registered, start L2L1 task */ // MessageDef *msg_init_p; // msg_init_p = itti_alloc_new_message (TASK_ENB_APP, INITIALIZE_MESSAGE); // itti_send_msg_to_task (TASK_L2L1, INSTANCE_DEFAULT, msg_init_p); // } else { // LOG_W(ENB_APP, " %d eNB not associated with a MME, retrying registration in %d seconds ...\n", // enb_nb - registered_enb, 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 (RC.rrc[0]->node_type,enb_id_start, enb_id_end);//, enb_properties_p); // } // } // } break; case M2AP_MBMS_SCHEDULING_INFORMATION: LOG_I(ENB_APP,"M2AP_SCHEDULING_INFORMATION received\n"); eNB_app_handle_m2ap_mbms_scheduling_information(ITTI_MESSAGE_GET_INSTANCE(msg_p)); break; case M2AP_MBMS_SESSION_START_REQ: LOG_I(ENB_APP,"M2AP_MBMS_SESSION_START_REQ received\n"); eNB_app_handle_m2ap_mbms_session_start_req(ITTI_MESSAGE_GET_INSTANCE(msg_p)); break; case M2AP_MBMS_SESSION_STOP_REQ: LOG_I(ENB_APP,"M2AP_MBMS_SESSION_STOP_REQ received\n"); eNB_app_handle_m2ap_mbms_session_stop_req(ITTI_MESSAGE_GET_INSTANCE(msg_p)); break; case M2AP_RESET: LOG_I(ENB_APP,"M2AP_RESET received\n"); break; case M2AP_ENB_CONFIGURATION_UPDATE_ACK: LOG_I(ENB_APP,"M2AP_ENB_CONFIGURATION_UPDATE_ACK received\n"); break; case M2AP_ENB_CONFIGURATION_UPDATE_FAILURE: LOG_I(ENB_APP,"M2AP_ENB_CONFIGURATION_UPDATE_FAILURE received\n"); break; case M2AP_ERROR_INDICATION: LOG_I(ENB_APP,"M2AP_MBMS_SESSION_UPDATE_REQ\n"); eNB_app_handle_m2ap_mbms_session_update_req(ITTI_MESSAGE_GET_INSTANCE(msg_p)); break; case M2AP_MBMS_SERVICE_COUNTING_REQ: LOG_I(ENB_APP,"M2AP_MBMS_SERVICE_COUNTING_REQ\n"); break; case M2AP_MCE_CONFIGURATION_UPDATE: LOG_I(ENB_APP,"M2AP_MCE_CONFIGURATION_UPDATE\n"); break; default: LOG_E(ENB_APP, "Received unexpected message %s\n", ITTI_MSG_NAME (msg_p)); 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 handle_reconfiguration(module_id_t mod_id) { struct timespec start, end; clock_gettime(CLOCK_MONOTONIC, &start); flexran_agent_info_t *flexran = RC.flexran[mod_id]; LOG_I(ENB_APP, "lte-softmodem soft-restart requested\n"); if (ENB_WAIT == flexran->node_ctrl_state) { /* this is already waiting, just release */ pthread_mutex_lock(&flexran->mutex_node_ctrl); flexran->node_ctrl_state = ENB_NORMAL_OPERATION; pthread_mutex_unlock(&flexran->mutex_node_ctrl); pthread_cond_signal(&flexran->cond_node_ctrl); return; } if (stop_L1L2(mod_id) < 0) { LOG_E(ENB_APP, "can not stop lte-softmodem, aborting restart\n"); return; } /* node_ctrl_state should have value ENB_MAKE_WAIT only if this method is not * executed by the FlexRAN thread */ if (ENB_MAKE_WAIT == flexran->node_ctrl_state) { LOG_I(ENB_APP, " * eNB %d: Waiting for FlexRAN RTController command *\n", mod_id); pthread_mutex_lock(&flexran->mutex_node_ctrl); flexran->node_ctrl_state = ENB_WAIT; while (ENB_NORMAL_OPERATION != flexran->node_ctrl_state) pthread_cond_wait(&flexran->cond_node_ctrl, &flexran->mutex_node_ctrl); pthread_mutex_unlock(&flexran->mutex_node_ctrl); } if (restart_L1L2(mod_id) < 0) { LOG_E(ENB_APP, "can not restart, killing lte-softmodem\n"); exit_fun("can not restart L1L2, killing lte-softmodem"); return; } clock_gettime(CLOCK_MONOTONIC, &end); end.tv_sec -= start.tv_sec; if (end.tv_nsec >= start.tv_nsec) { end.tv_nsec -= start.tv_nsec; } else { end.tv_sec -= 1; end.tv_nsec = end.tv_nsec - start.tv_nsec + 1000000000; } LOG_I(ENB_APP, "lte-softmodem restart succeeded in %ld.%ld s\n", end.tv_sec, end.tv_nsec / 1000000); }