341 lines
9.1 KiB
C
341 lines
9.1 KiB
C
/*******************************************************************************
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OpenAirInterface
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Copyright(c) 1999 - 2014 Eurecom
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OpenAirInterface is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenAirInterface is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OpenAirInterface.The full GNU General Public License is
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included in this distribution in the file called "COPYING". If not,
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see <http://www.gnu.org/licenses/>.
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Contact Information
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OpenAirInterface Admin: openair_admin@eurecom.fr
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OpenAirInterface Tech : openair_tech@eurecom.fr
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OpenAirInterface Dev : openair4g-devel@lists.eurecom.fr
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Address : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.
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*******************************************************************************/
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/*! \file enb_agent.h
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* \brief top level enb agent receive thread and itti task
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* \author Navid Nikaein and Xenofon Foukas
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* \date 2016
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* \version 0.1
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*/
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#include "enb_agent_common.h"
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#include "log.h"
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#include "enb_agent.h"
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#include "assertions.h"
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//#define TEST_TIMER
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enb_agent_instance_t enb_agent[NUM_MAX_ENB_AGENT];
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msg_context_t shared_ctxt[NUM_MAX_ENB_AGENT];
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/* this could also go into enb_agent struct*/
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enb_agent_info_t enb_agent_info;
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char in_ip[40];
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static uint16_t in_port;
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//void *send_thread(void *args);
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void *receive_thread(void *args);
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pthread_t new_thread(void *(*f)(void *), void *b);
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err_code_t enb_agent_timeout(void* args);
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/*
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* enb agent task mainly wakes up the tx thread for periodic and oneshot messages to the controller
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* and can interact with other itti tasks
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*/
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void *enb_agent_task(void *args){
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MessageDef *msg_p = NULL;
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const char *msg_name = NULL;
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instance_t instance;
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int result;
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itti_mark_task_ready(TASK_ENB_AGENT);
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do {
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// Wait for a message
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itti_receive_msg (TASK_ENB_AGENT, &msg_p);
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DevAssert(msg_p != NULL);
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msg_name = ITTI_MSG_NAME (msg_p);
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instance = ITTI_MSG_INSTANCE (msg_p);
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switch (ITTI_MSG_ID(msg_p)) {
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case TERMINATE_MESSAGE:
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itti_exit_task ();
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break;
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case MESSAGE_TEST:
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LOG_I(ENB_AGENT, "Received %s\n", ITTI_MSG_NAME(msg_p));
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break;
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case TIMER_HAS_EXPIRED:
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enb_agent_process_timeout(msg_p->ittiMsg.timer_has_expired.timer_id, &msg_p->ittiMsg.timer_has_expired.arg);
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break;
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default:
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LOG_E(ENB_AGENT, "Received unexpected message %s\n", msg_name);
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break;
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}
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result = itti_free (ITTI_MSG_ORIGIN_ID(msg_p), msg_p);
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AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
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} while (1);
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return NULL;
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}
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/*
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void *send_thread(void *args) {
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msg_context_t *d = args;
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void *data;
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int size;
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int priority;
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while (1) {
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// need logic for the timer, and
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usleep(10);
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if (message_put(d->tx_mq, data, size, priority)) goto error;
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}
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return NULL;
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error:
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printf("receive_thread: there was an error\n");
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return NULL;
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}
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*/
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void *receive_thread(void *args) {
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msg_context_t *d = args;
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void *data;
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int size;
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int priority;
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err_code_t err_code;
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Protocol__ProgranMessage *msg;
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while (1) {
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if (message_get(d->rx_mq, &data, &size, &priority)){
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err_code = PROTOCOL__PROGRAN_ERR__MSG_DEQUEUING;
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goto error;
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}
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LOG_D(ENB_AGENT,"received message with size %d\n", size);
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msg=enb_agent_handle_message(d->mod_id, d->rx_xid, data, size);
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free(data);
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d->rx_xid = ((d->rx_xid)+1)%4;
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d->tx_xid = d->rx_xid;
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// check if there is something to send back to the controller
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if (msg != NULL){
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data=enb_agent_send_message(d->tx_xid,msg,&size);
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if (message_put(d->tx_mq, data, size, priority)){
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err_code = PROTOCOL__PROGRAN_ERR__MSG_ENQUEUING;
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goto error;
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}
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LOG_D(ENB_AGENT,"sent message with size %d\n", size);
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}
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}
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return NULL;
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error:
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LOG_E(ENB_AGENT,"receive_thread: error %d occured\n",err_code);
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return NULL;
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}
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/* utility function to create a thread */
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pthread_t new_thread(void *(*f)(void *), void *b) {
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pthread_t t;
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pthread_attr_t att;
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if (pthread_attr_init(&att)){
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fprintf(stderr, "pthread_attr_init err\n");
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exit(1);
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}
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if (pthread_attr_setdetachstate(&att, PTHREAD_CREATE_DETACHED)) {
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fprintf(stderr, "pthread_attr_setdetachstate err\n");
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exit(1);
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}
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if (pthread_create(&t, &att, f, b)) {
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fprintf(stderr, "pthread_create err\n");
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exit(1);
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}
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if (pthread_attr_destroy(&att)) {
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fprintf(stderr, "pthread_attr_destroy err\n");
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exit(1);
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}
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return t;
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}
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int enb_agent_start(mid_t mod_id, const Enb_properties_array_t* enb_properties){
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//
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set_enb_vars(mod_id, RAN_LTE_OAI);
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enb_agent[mod_id].mod_id = mod_id;
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enb_agent_info.nb_modules+=1;
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/*
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* check the configuration
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*/
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if (enb_properties->properties[mod_id]->enb_agent_ipv4_address != NULL) {
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strncpy(in_ip, enb_properties->properties[mod_id]->enb_agent_ipv4_address, sizeof(in_ip) );
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in_ip[sizeof(in_ip) - 1] = 0; // terminate string
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} else {
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strcpy(in_ip, DEFAULT_ENB_AGENT_IPv4_ADDRESS );
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}
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if (enb_properties->properties[mod_id]->enb_agent_port != 0 ) {
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in_port = enb_properties->properties[mod_id]->enb_agent_port;
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} else {
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in_port = DEFAULT_ENB_AGENT_PORT ;
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}
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LOG_I(ENB_AGENT,"starting enb agent client for module id %d on ipv4 %s, port %d\n",
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enb_agent[mod_id].mod_id,
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in_ip,
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in_port);
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//#define TEST_TIMER 0
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#if !defined TEST_TIMER
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/*
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* create a socket
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*/
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enb_agent[mod_id].link = new_link_client(in_ip, in_port);
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if (enb_agent[mod_id].link == NULL) goto error;
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LOG_I(ENB_AGENT,"starting enb agent client for module id %d on ipv4 %s, port %d\n",
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enb_agent[mod_id].mod_id,
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in_ip,
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in_port);
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/*
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* create a message queue
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*/
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enb_agent[mod_id].send_queue = new_message_queue();
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if (enb_agent[mod_id].send_queue == NULL) goto error;
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enb_agent[mod_id].receive_queue = new_message_queue();
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if (enb_agent[mod_id].receive_queue == NULL) goto error;
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/*
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* create a link manager
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*/
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enb_agent[mod_id].manager = create_link_manager(enb_agent[mod_id].send_queue, enb_agent[mod_id].receive_queue, enb_agent[mod_id].link);
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if (enb_agent[mod_id].manager == NULL) goto error;
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memset(&shared_ctxt, 0, sizeof(msg_context_t));
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shared_ctxt[mod_id].mod_id = mod_id;
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shared_ctxt[mod_id].tx_mq = enb_agent[mod_id].send_queue;
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shared_ctxt[mod_id].rx_mq = enb_agent[mod_id].receive_queue;
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/*
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* start the enb agent rx thread
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*/
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new_thread(receive_thread, &shared_ctxt[mod_id]);
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#endif
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/*
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* initilize a timer
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*/
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enb_agent_init_timer();
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/*
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* start the enb agent task for tx and interaction with the underlying network function
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*/
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if (itti_create_task (TASK_ENB_AGENT, enb_agent_task, NULL) < 0) {
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LOG_E(ENB_AGENT, "Create task for eNB Agent failed\n");
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return -1;
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}
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#ifdef TEST_TIMER
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long timer_id=0;
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enb_agent_timer_args_t timer_args;
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memset (&timer_args, 0, sizeof(enb_agent_timer_args_t));
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timer_args.mod_id = mod_id;
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timer_args.cc_actions= ENB_AGENT_ACTION_APPLY;
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timer_args.cc_report_flags = PROTOCOL__PRP_CELL_STATS_TYPE__PRCST_NOISE_INTERFERENCE;
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timer_args.ue_actions = ENB_AGENT_ACTION_SEND;
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timer_args.ue_report_flags = PROTOCOL__PRP_UE_STATS_TYPE__PRUST_BSR | PROTOCOL__PRP_UE_STATS_TYPE__PRUST_DL_CQI;
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enb_agent_create_timer(1, 0, ENB_AGENT_DEFAULT, mod_id, ENB_AGENT_TIMER_TYPE_PERIODIC, enb_agent_timeout,(void*)&timer_args, &timer_id);
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#endif
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// new_thread(send_thread, &shared_ctxt);
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//while (1) pause();
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LOG_I(ENB_AGENT,"client ends\n");
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return 0;
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error:
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LOG_I(ENB_AGENT,"there was an error\n");
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return 1;
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}
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int enb_agent_stop(mid_t mod_id){
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int i=0;
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enb_agent_destroy_timers();
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for ( i =0; i < enb_agent_info.nb_modules; i++) {
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destroy_link_manager(enb_agent[i].manager);
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destroy_message_queue(enb_agent[i].send_queue);
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destroy_message_queue(enb_agent[i].receive_queue);
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close_link(enb_agent[i].link);
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}
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}
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err_code_t enb_agent_timeout(void* args){
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// enb_agent_timer_args_t *timer_args = calloc(1, sizeof(*timer_args));
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//memcpy (timer_args, args, sizeof(*timer_args));
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enb_agent_timer_args_t *timer_args = (enb_agent_timer_args_t *) args;
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LOG_I(ENB_AGENT, "enb_agent %d timeout\n", timer_args->mod_id);
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LOG_I(ENB_AGENT, "eNB action %d ENB flags %d \n", timer_args->cc_actions,timer_args->cc_report_flags);
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LOG_I(ENB_AGENT, "UE action %d UE flags %d \n", timer_args->ue_actions,timer_args->ue_report_flags);
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return 0;
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}
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