/*
* 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
*/
/*! \file m2ap_MCE.c
* \brief m2ap tasks for MCE
* \author Javier Morgade <javier.morgade@ieee.org>
* \date 2019
* \version 0.1
*/
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <arpa/inet.h>
#include "intertask_interface.h"
#include "m2ap_MCE.h"
#include "m2ap_MCE_defs.h"
#include "m2ap_MCE_management_procedures.h"
#include "m2ap_MCE_handler.h"
#include "m2ap_MCE_generate_messages.h"
#include "m2ap_common.h"
#include "m2ap_MCE_interface_management.h"
#include "m2ap_ids.h"
#include "m2ap_timers.h"
#include "queue.h"
#include "assertions.h"
#include "conversions.h"
struct m2ap_mce_map;
struct m2ap_MCE_data_s;
m2ap_setup_req_t *m2ap_mce_data_from_enb;
RB_PROTOTYPE(m2ap_mce_map, m2ap_MCE_data_s, entry, m2ap_MCE_compare_assoc_id);
static
void m2ap_MCE_handle_sctp_data_ind(instance_t instance, sctp_data_ind_t *sctp_data_ind);
static
void m2ap_MCE_handle_sctp_association_resp(instance_t instance, sctp_new_association_resp_t *sctp_new_association_resp);
static
void m2ap_MCE_handle_sctp_association_ind(instance_t instance, sctp_new_association_ind_t *sctp_new_association_ind);
static
void m2ap_MCE_handle_register_MCE(instance_t instance,
m2ap_register_mce_req_t *m2ap_register_MCE);
static
void m2ap_MCE_register_MCE(m2ap_MCE_instance_t *instance_p,
net_ip_address_t *target_MCE_ip_addr,
net_ip_address_t *local_ip_addr,
uint16_t in_streams,
uint16_t out_streams,
uint32_t mce_port_for_M2C,
int multi_sd);
//static
//void m2ap_MCE_handle_handover_req(instance_t instance,
// m2ap_handover_req_t *m2ap_handover_req);
//
//static
//void m2ap_MCE_handle_handover_req_ack(instance_t instance,
// m2ap_handover_req_ack_t *m2ap_handover_req_ack);
//
//static
//void m2ap_MCE_ue_context_release(instance_t instance,
// m2ap_ue_context_release_t *m2ap_ue_context_release);
//
static
void m2ap_MCE_handle_sctp_data_ind(instance_t instance, sctp_data_ind_t *sctp_data_ind) {
int result;
DevAssert(sctp_data_ind != NULL);
m2ap_MCE_handle_message(instance, sctp_data_ind->assoc_id, sctp_data_ind->stream,
sctp_data_ind->buffer, sctp_data_ind->buffer_length);
result = itti_free(TASK_UNKNOWN, sctp_data_ind->buffer);
AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
}
static
void m2ap_MCE_handle_sctp_association_resp(instance_t instance, sctp_new_association_resp_t *sctp_new_association_resp) {
DevAssert(sctp_new_association_resp != NULL);
if (sctp_new_association_resp->sctp_state != SCTP_STATE_ESTABLISHED) {
LOG_W(M2AP, "Received unsuccessful result for SCTP association (%u), instance %ld, cnx_id %u\n",
sctp_new_association_resp->sctp_state,
instance,
sctp_new_association_resp->ulp_cnx_id);
if (sctp_new_association_resp->sctp_state == SCTP_STATE_SHUTDOWN)
return;
}
// go to an init func
m2ap_mce_data_from_enb = (m2ap_setup_req_t *)calloc(1, sizeof(m2ap_setup_req_t));
// save the assoc id
m2ap_mce_data_from_enb->assoc_id = sctp_new_association_resp->assoc_id;
m2ap_mce_data_from_enb->sctp_in_streams = sctp_new_association_resp->in_streams;
m2ap_mce_data_from_enb->sctp_out_streams = sctp_new_association_resp->out_streams;
// m2ap_MCE_instance_t *instance_p;
// m2ap_MCE_data_t *m2ap_mce_data_p;
// DevAssert(sctp_new_association_resp != NULL);
// printf("m2ap_MCE_handle_sctp_association_resp at 1\n");
// dump_mce_trees_m2();
// instance_p = instance;//m2ap_MCE_get_instance(instance);
// DevAssert(instance_p != NULL);
// /* if the assoc_id is already known, it is certainly because an IND was received
// * before. In this case, just update streams and return
// */
// if (sctp_new_association_resp->assoc_id != -1) {
// m2ap_mce_data_p = m2ap_get_MCE(instance_p, sctp_new_association_resp->assoc_id,
// sctp_new_association_resp->ulp_cnx_id);
// if (m2ap_mce_data_p != NULL) {
// /* some sanity check - to be refined at some point */
// if (sctp_new_association_resp->sctp_state != SCTP_STATE_ESTABLISHED) {
// M2AP_ERROR("m2ap_mce_data_p not NULL and sctp state not SCTP_STATE_ESTABLISHED, what to do?\n");
// abort();
// }
// m2ap_mce_data_p->in_streams = sctp_new_association_resp->in_streams;
// m2ap_mce_data_p->out_streams = sctp_new_association_resp->out_streams;
// return;
// }
// }
// m2ap_mce_data_p = m2ap_get_MCE(instance_p, -1,
// sctp_new_association_resp->ulp_cnx_id);
// DevAssert(m2ap_mce_data_p != NULL);
// printf("m2ap_MCE_handle_sctp_association_resp at 2\n");
// dump_mce_trees_m2();
// if (sctp_new_association_resp->sctp_state != SCTP_STATE_ESTABLISHED) {
// M2AP_WARN("Received unsuccessful result for SCTP association (%u), instance %d, cnx_id %u\n",
// sctp_new_association_resp->sctp_state,
// instance,
// sctp_new_association_resp->ulp_cnx_id);
// //m2ap_eNB_handle_m2_setup_message(instance_p, m2ap_mce_data_p,
// //sctp_new_association_resp->sctp_state == SCTP_STATE_SHUTDOWN);
// return;
// }
// printf("m2ap_MCE_handle_sctp_association_resp at 3\n");
// dump_mce_trees_m2();
// /* Update parameters */
// m2ap_mce_data_p->assoc_id = sctp_new_association_resp->assoc_id;
// m2ap_mce_data_p->in_streams = sctp_new_association_resp->in_streams;
// m2ap_mce_data_p->out_streams = sctp_new_association_resp->out_streams;
// printf("m2ap_MCE_handle_sctp_association_resp at 4\n");
// dump_mce_trees_m2();
// /* Prepare new m2 Setup Request */
// //m2ap_MCE_generate_m2_setup_request(instance_p, m2ap_mce_data_p);
}
static
void m2ap_MCE_handle_sctp_association_ind(instance_t instance, sctp_new_association_ind_t *sctp_new_association_ind) {
//m2ap_MCE_instance_t *instance_p;
//m2ap_MCE_data_t *m2ap_mce_data_p;
//printf("m2ap_MCE_handle_sctp_association_ind at 1 (called for instance %d)\n", instance);
///dump_mce_trees_m2();
///DevAssert(sctp_new_association_ind != NULL);
///instance_p = instance;//m2ap_MCE_get_instance(instance);
///DevAssert(instance_p != NULL);
///m2ap_mce_data_p = m2ap_get_MCE(instance_p, sctp_new_association_ind->assoc_id, -1);
///if (m2ap_mce_data_p != NULL) abort();
///// DevAssert(m2ap_enb_data_p != NULL);
///if (m2ap_mce_data_p == NULL) {
/// /* Create new MCE descriptor */
/// m2ap_mce_data_p = calloc(1, sizeof(*m2ap_mce_data_p));
/// DevAssert(m2ap_mce_data_p != NULL);
/// m2ap_mce_data_p->cnx_id = m2ap_MCE_fetch_add_global_cnx_id();
/// m2ap_mce_data_p->m2ap_MCE_instance = instance_p;
/// /* Insert the new descriptor in list of known MCE
/// * but not yet associated.
/// */
/// RB_INSERT(m2ap_mce_map, &instance_p->m2ap_mce_head, m2ap_mce_data_p);
/// m2ap_mce_data_p->state = M2AP_MCE_STATE_CONNECTED;
/// instance_p->m2_target_mce_nb++;
/// if (instance_p->m2_target_mce_pending_nb > 0) {
/// instance_p->m2_target_mce_pending_nb--;
/// }
///} else {
/// M2AP_WARN("m2ap_mce_data_p already exists\n");
///}
///printf("m2ap_MCE_handle_sctp_association_ind at 2\n");
///dump_mce_trees_m2();
////* Update parameters */
///m2ap_mce_data_p->assoc_id = sctp_new_association_ind->assoc_id;
///m2ap_mce_data_p->in_streams = sctp_new_association_ind->in_streams;
///m2ap_mce_data_p->out_streams = sctp_new_association_ind->out_streams;
///printf("m2ap_MCE_handle_sctp_association_ind at 3\n");
///dump_mce_trees_m2();
}
int m2ap_MCE_init_sctp (m2ap_MCE_instance_t *instance_p,
net_ip_address_t *local_ip_addr,
uint32_t mce_port_for_M2C) {
// Create and alloc new message
MessageDef *message;
sctp_init_t *sctp_init = NULL;
DevAssert(instance_p != NULL);
DevAssert(local_ip_addr != NULL);
message = itti_alloc_new_message (TASK_M2AP_MCE, 0, SCTP_INIT_MSG_MULTI_REQ);
sctp_init = &message->ittiMsg.sctp_init_multi;
sctp_init->port = mce_port_for_M2C;
sctp_init->ppid = M2AP_SCTP_PPID;
sctp_init->ipv4 = 1;
sctp_init->ipv6 = 0;
sctp_init->nb_ipv4_addr = 1;
#if 0
memcpy(&sctp_init->ipv4_address,
local_ip_addr,
sizeof(*local_ip_addr));
#endif
sctp_init->ipv4_address[0] = inet_addr(local_ip_addr->ipv4_address);
/*
* SR WARNING: ipv6 multi-homing fails sometimes for localhost.
* * * * Disable it for now.
*/
sctp_init->nb_ipv6_addr = 0;
sctp_init->ipv6_address[0] = "0:0:0:0:0:0:0:1";
return itti_send_msg_to_task (TASK_SCTP, instance_p->instance, message);
}
static void m2ap_MCE_register_MCE(m2ap_MCE_instance_t *instance_p,
net_ip_address_t *target_MCE_ip_address,
net_ip_address_t *local_ip_addr,
uint16_t in_streams,
uint16_t out_streams,
uint32_t mce_port_for_M2C,
int multi_sd) {
MessageDef *message = NULL;
sctp_new_association_req_multi_t *sctp_new_association_req = NULL;
m2ap_MCE_data_t *m2ap_mce_data = NULL;
DevAssert(instance_p != NULL);
DevAssert(target_MCE_ip_address != NULL);
message = itti_alloc_new_message(TASK_M2AP_MCE, 0, SCTP_NEW_ASSOCIATION_REQ_MULTI);
sctp_new_association_req = &message->ittiMsg.sctp_new_association_req_multi;
sctp_new_association_req->port = mce_port_for_M2C;
sctp_new_association_req->ppid = M2AP_SCTP_PPID;
sctp_new_association_req->in_streams = in_streams;
sctp_new_association_req->out_streams = out_streams;
sctp_new_association_req->multi_sd = multi_sd;
memcpy(&sctp_new_association_req->remote_address,
target_MCE_ip_address,
sizeof(*target_MCE_ip_address));
memcpy(&sctp_new_association_req->local_address,
local_ip_addr,
sizeof(*local_ip_addr));
/* Create new MCE descriptor */
m2ap_mce_data = calloc(1, sizeof(*m2ap_mce_data));
DevAssert(m2ap_mce_data != NULL);
m2ap_mce_data->cnx_id = m2ap_MCE_fetch_add_global_cnx_id();
sctp_new_association_req->ulp_cnx_id = m2ap_mce_data->cnx_id;
m2ap_mce_data->assoc_id = -1;
m2ap_mce_data->m2ap_MCE_instance = instance_p;
/* Insert the new descriptor in list of known MCE
* but not yet associated.
*/
RB_INSERT(m2ap_mce_map, &instance_p->m2ap_mce_head, m2ap_mce_data);
m2ap_mce_data->state = M2AP_MCE_STATE_WAITING;
instance_p->m2_target_mce_nb ++;
instance_p->m2_target_mce_pending_nb ++;
itti_send_msg_to_task(TASK_SCTP, instance_p->instance, message);
}
static
void m2ap_MCE_handle_register_MCE(instance_t instance,
m2ap_register_mce_req_t *m2ap_register_MCE) {
m2ap_MCE_instance_t *new_instance;
DevAssert(m2ap_register_MCE != NULL);
/* Look if the provided instance already exists */
new_instance = m2ap_MCE_get_instance(instance);
if (new_instance != NULL) {
/* Checks if it is a retry on the same MCE */
DevCheck(new_instance->MCE_id == m2ap_register_MCE->MCE_id, new_instance->MCE_id, m2ap_register_MCE->MCE_id, 0);
DevCheck(new_instance->cell_type == m2ap_register_MCE->cell_type, new_instance->cell_type, m2ap_register_MCE->cell_type, 0);
DevCheck(new_instance->tac == m2ap_register_MCE->tac, new_instance->tac, m2ap_register_MCE->tac, 0);
DevCheck(new_instance->mcc == m2ap_register_MCE->mcc, new_instance->mcc, m2ap_register_MCE->mcc, 0);
DevCheck(new_instance->mnc == m2ap_register_MCE->mnc, new_instance->mnc, m2ap_register_MCE->mnc, 0);
M2AP_WARN("MCE[%ld] already registered\n", instance);
} else {
new_instance = calloc(1, sizeof(m2ap_MCE_instance_t));
DevAssert(new_instance != NULL);
RB_INIT(&new_instance->m2ap_mce_head);
/* Copy usefull parameters */
new_instance->instance = instance;
new_instance->MCE_name = m2ap_register_MCE->MCE_name;
new_instance->MCE_id = m2ap_register_MCE->MCE_id;
new_instance->cell_type = m2ap_register_MCE->cell_type;
new_instance->tac = m2ap_register_MCE->tac;
new_instance->mcc = m2ap_register_MCE->mcc;
new_instance->mnc = m2ap_register_MCE->mnc;
new_instance->mnc_digit_length = m2ap_register_MCE->mnc_digit_length;
new_instance->num_cc = m2ap_register_MCE->num_cc;
m2ap_id_manager_init(&new_instance->id_manager);
m2ap_timers_init(&new_instance->timers,
m2ap_register_MCE->t_reloc_prep,
m2ap_register_MCE->tm2_reloc_overall);
for (int i = 0; i< m2ap_register_MCE->num_cc; i++) {
new_instance->eutra_band[i] = m2ap_register_MCE->eutra_band[i];
new_instance->downlink_frequency[i] = m2ap_register_MCE->downlink_frequency[i];
new_instance->uplink_frequency_offset[i] = m2ap_register_MCE->uplink_frequency_offset[i];
new_instance->Nid_cell[i] = m2ap_register_MCE->Nid_cell[i];
new_instance->N_RB_DL[i] = m2ap_register_MCE->N_RB_DL[i];
new_instance->frame_type[i] = m2ap_register_MCE->frame_type[i];
new_instance->fdd_earfcn_DL[i] = m2ap_register_MCE->fdd_earfcn_DL[i];
new_instance->fdd_earfcn_UL[i] = m2ap_register_MCE->fdd_earfcn_UL[i];
}
DevCheck(m2ap_register_MCE->nb_m2 <= M2AP_MAX_NB_MCE_IP_ADDRESS,
M2AP_MAX_NB_MCE_IP_ADDRESS, m2ap_register_MCE->nb_m2, 0);
memcpy(new_instance->target_mce_m2_ip_address,
m2ap_register_MCE->target_mce_m2_ip_address,
m2ap_register_MCE->nb_m2 * sizeof(net_ip_address_t));
new_instance->nb_m2 = m2ap_register_MCE->nb_m2;
new_instance->mce_m2_ip_address = m2ap_register_MCE->mce_m2_ip_address;
new_instance->sctp_in_streams = m2ap_register_MCE->sctp_in_streams;
new_instance->sctp_out_streams = m2ap_register_MCE->sctp_out_streams;
new_instance->mce_port_for_M2C = m2ap_register_MCE->mce_port_for_M2C;
/* Add the new instance to the list of MCE (meaningfull in virtual mode) */
m2ap_MCE_insert_new_instance(new_instance);
M2AP_INFO("Registered new MCE[%ld] and %s MCE id %u\n",
instance,
m2ap_register_MCE->cell_type == CELL_MACRO_ENB ? "macro" : "home",
m2ap_register_MCE->MCE_id);
/* initiate the SCTP listener */
if (m2ap_MCE_init_sctp(new_instance,&m2ap_register_MCE->mce_m2_ip_address,m2ap_register_MCE->mce_port_for_M2C) < 0 ) {
M2AP_ERROR ("Error while sending SCTP_INIT_MSG to SCTP \n");
return;
}
M2AP_INFO("MCE[%ld] MCE id %u acting as a listner (server)\n",
instance, m2ap_register_MCE->MCE_id);
}
}
static
void m2ap_MCE_handle_sctp_init_msg_multi_cnf(
instance_t instance_id,
sctp_init_msg_multi_cnf_t *m) {
m2ap_MCE_instance_t *instance;
int index;
DevAssert(m != NULL);
instance = m2ap_MCE_get_instance(instance_id);
DevAssert(instance != NULL);
instance->multi_sd = m->multi_sd;
/* Exit if CNF message reports failure.
* Failure means multi_sd < 0.
*/
if (instance->multi_sd < 0) {
M2AP_ERROR("Error: be sure to properly configure M2 in your configuration file.\n");
DevAssert(instance->multi_sd >= 0);
}
/* Trying to connect to the provided list of MCE ip address */
for (index = 0; index < instance->nb_m2; index++) {
M2AP_INFO("MCE[%ld] MCE id %u acting as an initiator (client)\n",
instance_id, instance->MCE_id);
m2ap_MCE_register_MCE(instance,
&instance->target_mce_m2_ip_address[index],
&instance->mce_m2_ip_address,
instance->sctp_in_streams,
instance->sctp_out_streams,
instance->mce_port_for_M2C,
instance->multi_sd);
}
}
//static
//void m2ap_MCE_handle_handover_req(instance_t instance,
// m2ap_handover_req_t *m2ap_handover_req)
//{
// m2ap_MCE_instance_t *instance_p;
// m2ap_MCE_data_t *target;
// m2ap_id_manager *id_manager;
// int ue_id;
//
// int target_pci = m2ap_handover_req->target_physCellId;
//
// instance_p = m2ap_MCE_get_instance(instance);
// DevAssert(instance_p != NULL);
//
// target = m2ap_is_MCE_pci_in_list(target_pci);
// DevAssert(target != NULL);
//
// /* allocate m2ap ID */
// id_manager = &instance_p->id_manager;
// ue_id = m2ap_allocate_new_id(id_manager);
// if (ue_id == -1) {
// M2AP_ERROR("could not allocate a new M2AP UE ID\n");
// /* TODO: cancel handover: send (to be defined) message to RRC */
// exit(1);
// }
// /* id_source is ue_id, id_target is unknown yet */
// m2ap_set_ids(id_manager, ue_id, m2ap_handover_req->rnti, ue_id, -1);
// m2ap_id_set_state(id_manager, ue_id, M2ID_STATE_SOURCE_PREPARE);
// m2ap_set_reloc_prep_timer(id_manager, ue_id,
// m2ap_timer_get_tti(&instance_p->timers));
// m2ap_id_set_target(id_manager, ue_id, target);
//
// m2ap_MCE_generate_m2_handover_request(instance_p, target, m2ap_handover_req, ue_id);
//}
//static
//void m2ap_MCE_handle_handover_req_ack(instance_t instance,
// m2ap_handover_req_ack_t *m2ap_handover_req_ack)
//{
// /* TODO: remove this hack (the goal is to find the correct
// * eNodeB structure for the other end) - we need a proper way for RRC
// * and M2AP to identify eNodeBs
// * RRC knows about mod_id and M2AP knows about MCE_id (MCE_ID in
// * the configuration file)
// * as far as I understand.. CROUX
// */
// m2ap_MCE_instance_t *instance_p;
// m2ap_MCE_data_t *target;
// int source_assoc_id = m2ap_handover_req_ack->source_assoc_id;
// int ue_id;
// int id_source;
// int id_target;
//
// instance_p = m2ap_MCE_get_instance(instance);
// DevAssert(instance_p != NULL);
//
// target = m2ap_get_MCE(NULL, source_assoc_id, 0);
// DevAssert(target != NULL);
//
// /* rnti is a new information, save it */
// ue_id = m2ap_handover_req_ack->m2_id_target;
// id_source = m2ap_id_get_id_source(&instance_p->id_manager, ue_id);
// id_target = ue_id;
// m2ap_set_ids(&instance_p->id_manager, ue_id, m2ap_handover_req_ack->rnti, id_source, id_target);
//
// m2ap_MCE_generate_m2_handover_request_ack(instance_p, target, m2ap_handover_req_ack);
//}
//
//static
//void m2ap_MCE_ue_context_release(instance_t instance,
// m2ap_ue_context_release_t *m2ap_ue_context_release)
//{
// m2ap_MCE_instance_t *instance_p;
// m2ap_MCE_data_t *target;
// int source_assoc_id = m2ap_ue_context_release->source_assoc_id;
// int ue_id;
// instance_p = m2ap_MCE_get_instance(instance);
// DevAssert(instance_p != NULL);
//
// target = m2ap_get_MCE(NULL, source_assoc_id, 0);
// DevAssert(target != NULL);
//
// m2ap_MCE_generate_m2_ue_context_release(instance_p, target, m2ap_ue_context_release);
//
// /* free the M2AP UE ID */
// ue_id = m2ap_find_id_from_rnti(&instance_p->id_manager, m2ap_ue_context_release->rnti);
// if (ue_id == -1) {
// M2AP_ERROR("could not find UE %x\n", m2ap_ue_context_release->rnti);
// exit(1);
// }
// m2ap_release_id(&instance_p->id_manager, ue_id);
//}
void MCE_task_send_sctp_init_req(instance_t enb_id, m2ap_mce_sctp_req_t * m2ap_mce_sctp_req) {
// 1. get the itti msg, and retrive the enb_id from the message
// 2. use RC.rrc[enb_id] to fill the sctp_init_t with the ip, port
// 3. creat an itti message to init
LOG_I(M2AP, "M2AP_SCTP_REQ(create socket)\n");
MessageDef *message_p = NULL;
message_p = itti_alloc_new_message (TASK_M2AP_MCE, 0, SCTP_INIT_MSG);
// if( m2ap_mce_sctp_req == NULL ){
// message_p->ittiMsg.sctp_init.port = M2AP_PORT_NUMBER;
// message_p->ittiMsg.sctp_init.ppid = M2AP_SCTP_PPID;
// message_p->ittiMsg.sctp_init.ipv4 = 1;
// message_p->ittiMsg.sctp_init.ipv6 = 0;
// message_p->ittiMsg.sctp_init.nb_ipv4_addr = 1;
// //message_p->ittiMsg.sctp_init.ipv4_address[0] = inet_addr(RC.rrc[enb_id]->eth_params_s.my_addr);
// message_p->ittiMsg.sctp_init.ipv4_address[0] = inet_addr("127.0.0.7");
// /*
// * SR WARNING: ipv6 multi-homing fails sometimes for localhost.
// * * * * Disable it for now.
// */
// message_p->ittiMsg.sctp_init.nb_ipv6_addr = 0;
// message_p->ittiMsg.sctp_init.ipv6_address[0] = "0:0:0:0:0:0:0:1";
// }else{
message_p->ittiMsg.sctp_init.port = m2ap_mce_sctp_req->mce_port_for_M2C;
message_p->ittiMsg.sctp_init.ppid = M2AP_SCTP_PPID;
message_p->ittiMsg.sctp_init.ipv4 = 1;
message_p->ittiMsg.sctp_init.ipv6 = 0;
message_p->ittiMsg.sctp_init.nb_ipv4_addr = 1;
//message_p->ittiMsg.sctp_init.ipv4_address[0] = inet_addr(RC.rrc[enb_id]->eth_params_s.my_addr);
message_p->ittiMsg.sctp_init.ipv4_address[0] = inet_addr(m2ap_mce_sctp_req->mce_m2_ip_address.ipv4_address);
/*
* SR WARNING: ipv6 multi-homing fails sometimes for localhost.
* * * * Disable it for now.
*/
message_p->ittiMsg.sctp_init.nb_ipv6_addr = 0;
message_p->ittiMsg.sctp_init.ipv6_address[0] = "0:0:0:0:0:0:0:1";
// }
itti_send_msg_to_task(TASK_SCTP, enb_id, message_p);
}
void *m2ap_MCE_task(void *arg) {
MessageDef *received_msg = NULL;
int result;
M2AP_DEBUG("Starting M2AP layer\n");
m2ap_MCE_prepare_internal_data();
itti_mark_task_ready(TASK_M2AP_MCE);
//MCE_task_send_sctp_init_req(0,NULL);
while (1) {
itti_receive_msg(TASK_M2AP_MCE, &received_msg);
switch (ITTI_MSG_ID(received_msg)) {
case MESSAGE_TEST:
LOG_W(M2AP,"MCE Received MESSAGE_TEST Message\n");
//MessageDef * message_p = itti_alloc_new_message(TASK_M2AP_MCE, 0, MESSAGE_TEST);
//itti_send_msg_to_task(TASK_M3AP, 1/*ctxt_pP->module_id*/, message_p);
break;
case TERMINATE_MESSAGE:
M2AP_WARN(" *** Exiting M2AP thread\n");
itti_exit_task();
break;
case M2AP_MCE_SCTP_REQ:
MCE_task_send_sctp_init_req(ITTI_MSG_DESTINATION_INSTANCE(received_msg),
&M2AP_MCE_SCTP_REQ(received_msg));
break;
case M2AP_SUBFRAME_PROCESS:
m2ap_check_timers(ITTI_MSG_DESTINATION_INSTANCE(received_msg));
break;
case M2AP_REGISTER_MCE_REQ:
LOG_I(M2AP,"MCE Received M2AP_REGISTER_MCE_REQ Message\n");
m2ap_MCE_handle_register_MCE(ITTI_MSG_DESTINATION_INSTANCE(received_msg),
&M2AP_REGISTER_MCE_REQ(received_msg));
break;
case M2AP_SETUP_RESP:
LOG_I(M2AP,"MCE Received M2AP_SETUP_RESP Message\n");
MCE_send_M2_SETUP_RESPONSE(ITTI_MSG_DESTINATION_INSTANCE(received_msg),
&M2AP_SETUP_RESP(received_msg));
break;
case M2AP_SETUP_FAILURE:
LOG_I(M2AP,"MCE Received M2AP_SETUP_FAILURE Message\n");
MCE_send_M2_SETUP_FAILURE(ITTI_MSG_DESTINATION_INSTANCE(received_msg),
&M2AP_SETUP_FAILURE(received_msg));
break;
case M2AP_MBMS_SCHEDULING_INFORMATION:
LOG_I(M2AP,"MCE Received M2AP_MBMS_SCHEDULING_INFORMATION Message\n");
MCE_send_MBMS_SCHEDULING_INFORMATION(0,
&M2AP_MBMS_SCHEDULING_INFORMATION(received_msg));
break;
case M2AP_MBMS_SESSION_START_REQ:
LOG_I(M2AP,"MCE Received M2AP_MBMS_SESSION_START_REQ Message\n");
MCE_send_MBMS_SESSION_START_REQUEST(0,
&M2AP_MBMS_SESSION_START_REQ(received_msg));
break;
case M2AP_MBMS_SESSION_STOP_REQ:
LOG_I(M2AP,"MCE Received M2AP_MBMS_SESSION_STOP_REQ Message\n");
MCE_send_MBMS_SESSION_STOP_REQUEST(0,
&M2AP_MBMS_SESSION_STOP_REQ(received_msg));
break;
case M2AP_MBMS_SESSION_UPDATE_REQ:
LOG_I(M2AP,"MCE Received M2AP_MBMS_SESSION_UPDATE_REQ Message\n");
MCE_send_MBMS_SESSION_UPDATE_REQUEST(0,
&M2AP_MBMS_SESSION_UPDATE_REQ(received_msg));
break;
case M2AP_RESET:
LOG_I(M2AP,"MCE Received M2AP_RESET Message\n");
MCE_send_RESET(0,
&M2AP_RESET(received_msg));
break;
case M2AP_ENB_CONFIGURATION_UPDATE_ACK:
LOG_I(M2AP,"MCE Received M2AP_ENB_CONFIGURATION_UPDATE_ACK Message\n");
MCE_send_ENB_CONFIGURATION_UPDATE_ACKNOWLEDGE(0,
&M2AP_ENB_CONFIGURATION_UPDATE_ACK(received_msg));
break;
case M2AP_ENB_CONFIGURATION_UPDATE_FAILURE:
LOG_I(M2AP,"MCE Received M2AP_ENB_CONFIGURATION_UPDATE_FAILURE Message\n");
MCE_send_ENB_CONFIGURATION_UPDATE_FAILURE(0,
&M2AP_ENB_CONFIGURATION_UPDATE_FAILURE(received_msg));
break;
case M2AP_MCE_CONFIGURATION_UPDATE:
LOG_I(M2AP,"MCE Received M2AP_MCE_CONFIGURATION_UPDATE Message\n");
//MCE_send_MCE_CONFIGURATION_UPDATE(0,
//&M2AP_MCE_CONFIGURATION_UPDATE(received_msg));
break;
// case M2AP_HANDOVER_REQ:
// m2ap_MCE_handle_handover_req(ITTI_MSG_DESTINATION_INSTANCE(received_msg),
// &M2AP_HANDOVER_REQ(received_msg));
// break;
//
// case M2AP_HANDOVER_REQ_ACK:
// m2ap_MCE_handle_handover_req_ack(ITTI_MSG_DESTINATION_INSTANCE(received_msg),
// &M2AP_HANDOVER_REQ_ACK(received_msg));
// break;
//
// case M2AP_UE_CONTEXT_RELEASE:
// m2ap_MCE_ue_context_release(ITTI_MSG_DESTINATION_INSTANCE(received_msg),
// &M2AP_UE_CONTEXT_RELEASE(received_msg));
// break;
//
case SCTP_INIT_MSG_MULTI_CNF:
LOG_D(M2AP,"MCE Received SCTP_INIT_MSG_MULTI_CNF Message\n");
m2ap_MCE_handle_sctp_init_msg_multi_cnf(ITTI_MSG_DESTINATION_INSTANCE(received_msg),
&received_msg->ittiMsg.sctp_init_msg_multi_cnf);
break;
case SCTP_NEW_ASSOCIATION_RESP:
LOG_D(M2AP,"MCE Received SCTP_NEW_ASSOCIATION_RESP Message\n");
m2ap_MCE_handle_sctp_association_resp(ITTI_MSG_DESTINATION_INSTANCE(received_msg),
&received_msg->ittiMsg.sctp_new_association_resp);
break;
case SCTP_NEW_ASSOCIATION_IND:
LOG_D(M2AP,"MCE Received SCTP_NEW_ASSOCIATION Message\n");
m2ap_MCE_handle_sctp_association_ind(ITTI_MSG_DESTINATION_INSTANCE(received_msg),
&received_msg->ittiMsg.sctp_new_association_ind);
break;
case SCTP_DATA_IND:
LOG_D(M2AP,"MCE Received SCTP_DATA_IND Message\n");
m2ap_MCE_handle_sctp_data_ind(ITTI_MSG_DESTINATION_INSTANCE(received_msg),
&received_msg->ittiMsg.sctp_data_ind);
break;
default:
M2AP_ERROR("MCE 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;
}
#include "common/config/config_userapi.h"
int is_m2ap_MCE_enabled(void)
{
static volatile int config_loaded = 0;
static volatile int enabled = 0;
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
if (pthread_mutex_lock(&mutex)) goto mutex_error;
if (config_loaded) {
if (pthread_mutex_unlock(&mutex)) goto mutex_error;
return enabled;
}
char *enable_m2 = NULL;
paramdef_t p[] = {
{ "enable_mce_m2", "yes/no", 0, .strptr=&enable_m2, .defstrval="", TYPE_STRING, 0 }
};
/* TODO: do it per module - we check only first MCE */
config_get(p, sizeof(p)/sizeof(paramdef_t), "MCEs.[0]");
if (enable_m2 != NULL && strcmp(enable_m2, "yes") == 0)
enabled = 1;
config_loaded = 1;
if (pthread_mutex_unlock(&mutex)) goto mutex_error;
return enabled;
mutex_error:
LOG_E(M2AP, "mutex error\n");
exit(1);
}