/******************************************************************************* Eurecom OpenAirInterface Copyright(c) 1999 - 2013 Eurecom This program is free software; you can redistribute it and/or modify it under the terms and conditions of the GNU General Public License, version 2, as published by the Free Software Foundation. This program is distributed in the hope it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. The full GNU General Public License is included in this distribution in the file called "COPYING". Contact Information Openair Admin: openair_admin@eurecom.fr Openair Tech : openair_tech@eurecom.fr Forums : http://forums.eurecom.fr/openairinterface Address : EURECOM, Campus SophiaTech, 450 Route des Chappes 06410 Biot FRANCE *******************************************************************************/ #include <pthread.h> #include <stdio.h> #include <stdlib.h> #include <stdint.h> #include <string.h> #include "intertask_interface.h" #include "mme_config.h" #include "nas_defs.h" #if !defined(DISABLE_USE_NAS) # include "nas_network.h" # include "nas_proc.h" # include "emm_main.h" # include "nas_log.h" # include "nas_timer.h" #endif #define NAS_ERROR(x, args...) do { fprintf(stderr, "[NAS] [E]"x, ##args); } while(0) #define NAS_DEBUG(x, args...) do { fprintf(stdout, "[NAS] [D]"x, ##args); } while(0) #define NAS_WARN(x, args...) do { fprintf(stdout, "[NAS] [W]"x, ##args); } while(0) static void *nas_intertask_interface(void *args_p) { itti_mark_task_ready(TASK_NAS); while(1) { MessageDef *received_message_p; next_message: itti_receive_msg(TASK_NAS, &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, 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, 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_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 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 TERMINATE_MESSAGE: { itti_exit_task(); } break; default: { NAS_DEBUG("Unkwnon message ID %d:%s\n", ITTI_MSG_ID(received_message_p), ITTI_MSG_NAME(received_message_p)); } break; } free(received_message_p); received_message_p = NULL; } return NULL; } int nas_init(mme_config_t *mme_config_p) { NAS_DEBUG("Initializing NAS task interface\n"); #if !defined(DISABLE_USE_NAS) nas_log_init(0x2F); nas_network_initialize(mme_config_p); #endif if (itti_create_task(TASK_NAS, &nas_intertask_interface, NULL) < 0) { NAS_ERROR("Create task failed"); NAS_DEBUG("Initializing NAS task interface: FAILED\n"); return -1; } NAS_DEBUG("Initializing NAS task interface: DONE\n"); return 0; }