Skip to content
GitLab
Commit 1729b3dc authored by Konstantinos Alexandris's avatar Konstantinos Alexandris
Browse files

X2AP: init funcs (register/association) + handler/management functions 

SCTP: one to many sockets implementation
parent 3b3b9718
Hide whitespace changes
Inline Side-by-side
cmake_targets/CMakeLists.txt
View file @ 1729b3dc
......@@ -474,15 +474,15 @@ add_library(X2AP_LIB
include_directories ("${X2AP_C_DIR}")
include_directories ("${X2AP_DIR}")
#add_library(X2AP_ENB
# ${X2AP_DIR}/x2ap_eNB.c
add_library(X2AP_ENB
${X2AP_DIR}/x2ap_eNB.c
# ${X2AP_DIR}/x2ap_eNB_decoder.c
# ${X2AP_DIR}/x2ap_eNB_encoder.c
# ${X2AP_DIR}/x2ap_eNB_handler.c
${X2AP_DIR}/x2ap_eNB_handler.c
# ${X2AP_DIR}/x2ap_eNB_itti_messaging.c
# ${X2AP_DIR}/x2ap_eNB_management_procedures.c
${X2AP_DIR}/x2ap_eNB_management_procedures.c
# ${X2AP_DIR}/x2ap_eNB_generate_messages.c
# )
)
# Hardware dependant options
###################################
......@@ -1947,7 +1947,7 @@ add_executable(lte-softmodem
target_link_libraries (lte-softmodem
-Wl,--start-group
RRC_LIB S1AP_LIB S1AP_ENB X2AP_LIB GTPV1U SECU_CN SECU_OSA UTIL HASHTABLE SCTP_CLIENT UDP SCHED_LIB SCHED_RU_LIB PHY_COMMON PHY PHY_RU LFDS L2
RRC_LIB S1AP_LIB S1AP_ENB X2AP_LIB X2AP_ENB GTPV1U SECU_CN SECU_OSA UTIL HASHTABLE SCTP_CLIENT UDP SCHED_LIB SCHED_RU_LIB PHY_COMMON PHY PHY_RU LFDS L2
${MSC_LIB} ${RAL_LIB} ${NAS_UE_LIB} ${ITTI_LIB} ${FLPT_MSG_LIB} ${ASYNC_IF_LIB} ${FLEXRAN_AGENT_LIB} LFDS7
NFAPI_COMMON_LIB NFAPI_LIB NFAPI_VNF_LIB NFAPI_PNF_LIB NFAPI_USER_LIB
-Wl,--end-group z dl)
......@@ -2023,7 +2023,7 @@ add_executable(lte-uesoftmodem
target_link_libraries (lte-uesoftmodem
-Wl,--start-group
RRC_LIB S1AP_LIB S1AP_ENB X2AP_LIB GTPV1U SECU_CN SECU_OSA UTIL HASHTABLE SCTP_CLIENT UDP SCHED_RU_LIB SCHED_UE_LIB PHY_COMMON PHY_UE PHY_RU LFDS L2_UE SIMU
RRC_LIB S1AP_LIB S1AP_ENB X2AP_LIB X2AP_ENB GTPV1U SECU_CN SECU_OSA UTIL HASHTABLE SCTP_CLIENT UDP SCHED_RU_LIB SCHED_UE_LIB PHY_COMMON PHY_UE PHY_RU LFDS L2_UE SIMU
${MSC_LIB} ${RAL_LIB} ${NAS_UE_LIB} ${ITTI_LIB} ${FLPT_MSG_LIB} ${ASYNC_IF_LIB} LFDS7 ${ATLAS_LIBRARIES}
NFAPI_COMMON_LIB NFAPI_LIB NFAPI_PNF_LIB NFAPI_USER_LIB
-Wl,--end-group z dl)
......@@ -2140,7 +2140,7 @@ add_executable(test_epc_generate_scenario
${OPENAIR3_DIR}/S1AP/s1ap_eNB_defs.h
)
target_link_libraries (test_epc_generate_scenario
-Wl,--start-group RRC_LIB S1AP_LIB S1AP_ENB X2AP_LIB GTPV1U LIB_NAS_UE SECU_CN UTIL HASHTABLE SCTP_CLIENT UDP SCHED_LIB PHY LFDS ${ITTI_LIB} ${MSC_LIB} L2 -Wl,--end-group pthread m rt crypt sctp ${LIBXML2_LIBRARIES} ${LIBXSLT_LIBRARIES} ${CRYPTO_LIBRARIES} ${OPENSSL_LIBRARIES} ${NETTLE_LIBRARIES} ${CONFIG_LIBRARIES}
-Wl,--start-group RRC_LIB S1AP_LIB S1AP_ENB X2AP_LIB X2AP_ENB GTPV1U LIB_NAS_UE SECU_CN UTIL HASHTABLE SCTP_CLIENT UDP SCHED_LIB PHY LFDS ${ITTI_LIB} ${MSC_LIB} L2 -Wl,--end-group pthread m rt crypt sctp ${LIBXML2_LIBRARIES} ${LIBXSLT_LIBRARIES} ${CRYPTO_LIBRARIES} ${OPENSSL_LIBRARIES} ${NETTLE_LIBRARIES} ${CONFIG_LIBRARIES}
)
add_executable(test_epc_play_scenario
......@@ -2160,7 +2160,7 @@ add_executable(test_epc_play_scenario
)
target_include_directories(test_epc_play_scenario PUBLIC /usr/local/share/asn1c)
target_link_libraries (test_epc_play_scenario
-Wl,--start-group RRC_LIB S1AP_LIB X2AP_LIB GTPV1U LIB_NAS_UE SECU_CN UTIL HASHTABLE SCTP_CLIENT UDP SCHED_LIB PHY_COMMON PHY PHY_UE LFDS ${ITTI_LIB} ${MSC_LIB} -Wl,--end-group pthread m rt crypt sctp ${LIBXML2_LIBRARIES} ${LIBXSLT_LIBRARIES} ${CRYPTO_LIBRARIES} ${OPENSSL_LIBRARIES} ${NETTLE_LIBRARIES} ${CONFIG_LIBRARIES}
-Wl,--start-group RRC_LIB S1AP_LIB X2AP_LIB X2AP_ENB GTPV1U LIB_NAS_UE SECU_CN UTIL HASHTABLE SCTP_CLIENT UDP SCHED_LIB PHY_COMMON PHY PHY_UE LFDS ${ITTI_LIB} ${MSC_LIB} -Wl,--end-group pthread m rt crypt sctp ${LIBXML2_LIBRARIES} ${LIBXSLT_LIBRARIES} ${CRYPTO_LIBRARIES} ${OPENSSL_LIBRARIES} ${NETTLE_LIBRARIES} ${CONFIG_LIBRARIES}
)
......@@ -2196,7 +2196,7 @@ if (${T_TRACER})
dlsim_tm4 dlsim dlsim_tm7 ulsim pbchsim scansim mbmssim
pdcchsim pucchsim prachsim syncsim ulsim
#all "add_library" definitions
ITTI RRC_LIB S1AP_LIB S1AP_ENB X2AP_LIB
ITTI RRC_LIB S1AP_LIB S1AP_ENB X2AP_LIB X2AP_ENB
oai_exmimodevif oai_usrpdevif oai_bladerfdevif oai_lmssdrdevif
oai_eth_transpro
FLPT_MSG ASYNC_IF FLEXRAN_AGENT HASHTABLE MSC UTIL OMG_SUMO SECU_OSA
......
openair2/COMMON/sctp_messages_def.h
View file @ 1729b3dc
......@@ -19,11 +19,13 @@
* contact@openairinterface.org
*/
MESSAGE_DEF(SCTP_NEW_ASSOCIATION_REQ , MESSAGE_PRIORITY_MED, sctp_new_association_req_t , sctp_new_association_req)
MESSAGE_DEF(SCTP_NEW_ASSOCIATION_RESP, MESSAGE_PRIORITY_MED, sctp_new_association_resp_t , sctp_new_association_resp)
MESSAGE_DEF(SCTP_NEW_ASSOCIATION_IND , MESSAGE_PRIORITY_MED, sctp_new_association_ind_t , sctp_new_association_ind)
MESSAGE_DEF(SCTP_REGISTER_UPPER_LAYER, MESSAGE_PRIORITY_MED, sctp_listener_register_upper_layer_t, sctp_listener_register_upper_layer)
MESSAGE_DEF(SCTP_DATA_REQ, MESSAGE_PRIORITY_MED, sctp_data_req_t , sctp_data_req)
MESSAGE_DEF(SCTP_DATA_IND, MESSAGE_PRIORITY_MED, sctp_data_ind_t , sctp_data_ind)
MESSAGE_DEF(SCTP_INIT_MSG, MESSAGE_PRIORITY_MED, sctp_init_t , sctp_init)
MESSAGE_DEF(SCTP_CLOSE_ASSOCIATION, MESSAGE_PRIORITY_MAX, sctp_close_association_t , sctp_close_association)
MESSAGE_DEF(SCTP_NEW_ASSOCIATION_REQ , MESSAGE_PRIORITY_MED, sctp_new_association_req_t , sctp_new_association_req)
MESSAGE_DEF(SCTP_NEW_ASSOCIATION_REQ_MULTI, MESSAGE_PRIORITY_MED, sctp_new_association_req_t , sctp_new_association_req_multi)
MESSAGE_DEF(SCTP_NEW_ASSOCIATION_RESP, MESSAGE_PRIORITY_MED, sctp_new_association_resp_t , sctp_new_association_resp)
MESSAGE_DEF(SCTP_NEW_ASSOCIATION_IND , MESSAGE_PRIORITY_MED, sctp_new_association_ind_t , sctp_new_association_ind)
MESSAGE_DEF(SCTP_REGISTER_UPPER_LAYER, MESSAGE_PRIORITY_MED, sctp_listener_register_upper_layer_t, sctp_listener_register_upper_layer)
MESSAGE_DEF(SCTP_DATA_REQ, MESSAGE_PRIORITY_MED, sctp_data_req_t , sctp_data_req)
MESSAGE_DEF(SCTP_DATA_IND, MESSAGE_PRIORITY_MED, sctp_data_ind_t , sctp_data_ind)
MESSAGE_DEF(SCTP_INIT_MSG, MESSAGE_PRIORITY_MED, sctp_init_t , sctp_init)
MESSAGE_DEF(SCTP_INIT_MSG_MULTI, MESSAGE_PRIORITY_MED, sctp_init_t , sctp_init_multi)
MESSAGE_DEF(SCTP_CLOSE_ASSOCIATION, MESSAGE_PRIORITY_MAX, sctp_close_association_t , sctp_close_association)
openair2/COMMON/sctp_messages_types.h
View file @ 1729b3dc
......@@ -22,13 +22,15 @@
#ifndef SCTP_MESSAGES_TYPES_H_
#define SCTP_MESSAGES_TYPES_H_
#define SCTP_NEW_ASSOCIATION_REQ(mSGpTR) (mSGpTR)->ittiMsg.sctp_new_association_req
#define SCTP_NEW_ASSOCIATION_RESP(mSGpTR)(mSGpTR)->ittiMsg.sctp_new_association_resp
#define SCTP_NEW_ASSOCIATION_IND(mSGpTR) (mSGpTR)->ittiMsg.sctp_new_association_ind
#define SCTP_DATA_IND(mSGpTR) (mSGpTR)->ittiMsg.sctp_data_ind
#define SCTP_DATA_REQ(mSGpTR) (mSGpTR)->ittiMsg.sctp_data_req
#define SCTP_INIT_MSG(mSGpTR) (mSGpTR)->ittiMsg.sctp_init
#define SCTP_CLOSE_ASSOCIATION(mSGpTR) (mSGpTR)->ittiMsg.sctp_close_association
#define SCTP_NEW_ASSOCIATION_REQ(mSGpTR) (mSGpTR)->ittiMsg.sctp_new_association_req
#define SCTP_NEW_ASSOCIATION_REQ_MULTI(mSGpTR) (mSGpTR)->ittiMsg.sctp_new_association_req_multi
#define SCTP_NEW_ASSOCIATION_RESP(mSGpTR) (mSGpTR)->ittiMsg.sctp_new_association_resp
#define SCTP_NEW_ASSOCIATION_IND(mSGpTR) (mSGpTR)->ittiMsg.sctp_new_association_ind
#define SCTP_DATA_IND(mSGpTR) (mSGpTR)->ittiMsg.sctp_data_ind
#define SCTP_DATA_REQ(mSGpTR) (mSGpTR)->ittiMsg.sctp_data_req
#define SCTP_INIT_MSG(mSGpTR) (mSGpTR)->ittiMsg.sctp_init
#define SCTP_INIT_MSG_MULTI(mSGpTR) (mSGpTR)->ittiMsg.sctp_init_multi
#define SCTP_CLOSE_ASSOCIATION(mSGpTR) (mSGpTR)->ittiMsg.sctp_close_association
enum sctp_state_e {
SCTP_STATE_CLOSED,
......
openair2/ENB_APP/enb_app.c
View file @ 1729b3dc
......@@ -46,7 +46,7 @@
# include "gtpv1u_eNB_task.h"
# endif
//# include "x2ap_eNB.h"
# include "x2ap_eNB.h"
# include "x2ap_messages_types.h"
# define X2AP_ENB_REGISTER_RETRY_DELAY 10
......@@ -154,7 +154,7 @@ static uint32_t eNB_app_register_x2(uint32_t enb_id_start, uint32_t enb_id_end)
RCconfig_X2(msg_p, enb_id);
//itti_send_msg_to_task (TASK_X2AP, ENB_MODULE_ID_TO_INSTANCE(enb_id), msg_p);
itti_send_msg_to_task (TASK_X2AP, ENB_MODULE_ID_TO_INSTANCE(enb_id), msg_p);
register_enb_x2_pending++;
}
......@@ -176,8 +176,8 @@ void *eNB_app_task(void *args_p)
long enb_register_retry_timer_id;
# endif
uint32_t x2_register_enb_pending;
//uint32_t x2_registered_enb;
//long x2_enb_register_retry_timer_id;
uint32_t x2_registered_enb;
long x2_enb_register_retry_timer_id;
uint32_t enb_id;
MessageDef *msg_p = NULL;
instance_t instance;
......@@ -224,7 +224,7 @@ void *eNB_app_task(void *args_p)
# endif
/* Try to register each eNB with each other */
// x2_registered_enb = 0;
x2_registered_enb = 0;
x2_register_enb_pending = eNB_app_register_x2 (enb_id_start, enb_id_end);
do {
......@@ -301,8 +301,59 @@ void *eNB_app_task(void *args_p)
register_enb_pending = eNB_app_register (enb_id_start, enb_id_end);//, enb_properties_p);
}
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);
}
break;
# endif
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;
default:
LOG_E(ENB_APP, "Received unexpected message %s\n", ITTI_MSG_NAME (msg_p));
......
openair2/X2AP/x2ap_common.h
View file @ 1729b3dc
......@@ -62,10 +62,12 @@ extern int asn1_xer_print;
#if defined(ENB_MODE)
# include "log.h"
# define X2AP_INFO(x, args...) LOG_I(X2AP, x, ##args)
# define X2AP_ERROR(x, args...) LOG_E(X2AP, x, ##args)
# define X2AP_WARN(x, args...) LOG_W(X2AP, x, ##args)
# define X2AP_DEBUG(x, args...) LOG_D(X2AP, x, ##args)
#else
# define X2AP_INFO(x, args...) do { fprintf(stdout, "[X2AP][I]"x, ##args); } while(0)
# define X2AP_ERROR(x, args...) do { fprintf(stdout, "[X2AP][E]"x, ##args); } while(0)
# define X2AP_WARN(x, args...) do { fprintf(stdout, "[X2AP][W]"x, ##args); } while(0)
# define X2AP_DEBUG(x, args...) do { fprintf(stdout, "[X2AP][D]"x, ##args); } while(0)
......
openair2/X2AP/x2ap_eNB.c 0 → 100644
View file @ 1729b3dc
/*
* 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
*/
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <arpa/inet.h>
#include "intertask_interface.h"
#include "x2ap_eNB.h"
#include "x2ap_eNB_defs.h"
#include "x2ap_eNB_management_procedures.h"
#include "x2ap_eNB_handler.h"
#include "x2ap_common.h"
#include "queue.h"
#include "assertions.h"
#include "conversions.h"
struct x2ap_enb_map;
struct x2ap_eNB_data_s;
RB_PROTOTYPE(x2ap_enb_map, x2ap_eNB_data_s, entry, x2ap_eNB_compare_assoc_id);
//static
//void x2ap_eNB_handle_sctp_data_ind(instance_t instance,
// sctp_data_ind_t *sctp_data_ind);
static
void x2ap_eNB_handle_sctp_association_resp(instance_t instance, sctp_new_association_resp_t *sctp_new_association_resp);
static
void x2ap_eNB_handle_sctp_association_ind(instance_t instance, sctp_new_association_ind_t *sctp_new_association_ind);
static
void x2ap_eNB_handle_register_eNB(instance_t instance,
x2ap_register_enb_req_t *x2ap_register_eNB);
static
void x2ap_eNB_register_eNB(x2ap_eNB_instance_t *instance_p,
net_ip_address_t *target_eNB_ip_addr,
net_ip_address_t *local_ip_addr,
uint16_t in_streams,
uint16_t out_streams,
uint32_t enb_port_for_X2C);
static
void x2ap_eNB_handle_sctp_association_resp(instance_t instance,
sctp_new_association_resp_t *sctp_new_association_resp);
/*
static
void x2ap_eNB_handle_sctp_data_ind(instance_t instance,
sctp_data_ind_t *sctp_data_ind) {
int result;
DevAssert(sctp_data_ind != NULL);
x2ap_eNB_handle_message(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 x2ap_eNB_handle_sctp_association_resp(instance_t instance, sctp_new_association_resp_t *sctp_new_association_resp)
{
x2ap_eNB_instance_t *instance_p;
x2ap_eNB_data_t *x2ap_enb_data_p;
DevAssert(sctp_new_association_resp != NULL);
printf("x2ap_eNB_handle_sctp_association_resp at 1\n");
dump_trees();
instance_p = x2ap_eNB_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) {
x2ap_enb_data_p = x2ap_get_eNB(instance_p, sctp_new_association_resp->assoc_id,
sctp_new_association_resp->ulp_cnx_id);
if (x2ap_enb_data_p != NULL) {
/* some sanity check - to be refined at some point */
if (sctp_new_association_resp->sctp_state != SCTP_STATE_ESTABLISHED) {
X2AP_ERROR("x2ap_enb_data_p not NULL and sctp state not SCTP_STATE_ESTABLISHED, what to do?\n");
abort();
}
x2ap_enb_data_p->in_streams = sctp_new_association_resp->in_streams;
x2ap_enb_data_p->out_streams = sctp_new_association_resp->out_streams;
return;
}
}
x2ap_enb_data_p = x2ap_get_eNB(instance_p, -1,
sctp_new_association_resp->ulp_cnx_id);
DevAssert(x2ap_enb_data_p != NULL);
printf("x2ap_eNB_handle_sctp_association_resp at 2\n");
dump_trees();
if (sctp_new_association_resp->sctp_state != SCTP_STATE_ESTABLISHED) {
X2AP_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);
x2ap_handle_x2_setup_message(x2ap_enb_data_p,
sctp_new_association_resp->sctp_state == SCTP_STATE_SHUTDOWN);
return;
}
printf("x2ap_eNB_handle_sctp_association_resp at 3\n");
dump_trees();
/* Update parameters */
x2ap_enb_data_p->assoc_id = sctp_new_association_resp->assoc_id;
x2ap_enb_data_p->in_streams = sctp_new_association_resp->in_streams;
x2ap_enb_data_p->out_streams = sctp_new_association_resp->out_streams;
printf("x2ap_eNB_handle_sctp_association_resp at 4\n");
dump_trees();
/* Prepare new x2 Setup Request */
//x2ap_eNB_generate_x2_setup_request(instance_p, x2ap_enb_data_p);
}
static
void x2ap_eNB_handle_sctp_association_ind(instance_t instance, sctp_new_association_ind_t *sctp_new_association_ind)
{
x2ap_eNB_instance_t *instance_p;
x2ap_eNB_data_t *x2ap_enb_data_p;
printf("x2ap_eNB_handle_sctp_association_ind at 1 (called for instance %d)\n", instance);
dump_trees();
DevAssert(sctp_new_association_ind != NULL);
instance_p = x2ap_eNB_get_instance(instance);
DevAssert(instance_p != NULL);
x2ap_enb_data_p = x2ap_get_eNB(instance_p, sctp_new_association_ind->assoc_id, -1);
if (x2ap_enb_data_p != NULL) abort();
// DevAssert(x2ap_enb_data_p != NULL);
if (x2ap_enb_data_p == NULL) {
/* Create new eNB descriptor */
x2ap_enb_data_p = calloc(1, sizeof(*x2ap_enb_data_p));
DevAssert(x2ap_enb_data_p != NULL);
x2ap_enb_data_p->cnx_id = x2ap_eNB_fetch_add_global_cnx_id();
x2ap_enb_data_p->x2ap_eNB_instance = instance_p;
/* Insert the new descriptor in list of known eNB
* but not yet associated.
*/
RB_INSERT(x2ap_enb_map, &instance_p->x2ap_enb_head, x2ap_enb_data_p);
x2ap_enb_data_p->state = X2AP_ENB_STATE_CONNECTED;
instance_p->x2_target_enb_nb++;
if (instance_p->x2_target_enb_pending_nb > 0) {
instance_p->x2_target_enb_pending_nb--;
}
} else {
X2AP_WARN("x2ap_enb_data_p already exists\n");
}
printf("x2ap_eNB_handle_sctp_association_ind at 2\n");
dump_trees();
/* Update parameters */
x2ap_enb_data_p->assoc_id = sctp_new_association_ind->assoc_id;
x2ap_enb_data_p->in_streams = sctp_new_association_ind->in_streams;
x2ap_enb_data_p->out_streams = sctp_new_association_ind->out_streams;
printf("x2ap_eNB_handle_sctp_association_ind at 3\n");
dump_trees();
}
int x2ap_eNB_init_sctp (x2ap_eNB_instance_t *instance_p,
net_ip_address_t *local_ip_addr,
uint32_t enb_port_for_X2C)
{
// 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_X2AP, SCTP_INIT_MSG_MULTI);
sctp_init = &message->ittiMsg.sctp_init_multi;
sctp_init->port = enb_port_for_X2C;
sctp_init->ppid = X2AP_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 x2ap_eNB_register_eNB(x2ap_eNB_instance_t *instance_p,
net_ip_address_t *target_eNB_ip_address,
net_ip_address_t *local_ip_addr,
uint16_t in_streams,
uint16_t out_streams,
uint32_t enb_port_for_X2C)
{
MessageDef *message = NULL;
sctp_new_association_req_t *sctp_new_association_req = NULL;
x2ap_eNB_data_t *x2ap_enb_data = NULL;
DevAssert(instance_p != NULL);
DevAssert(target_eNB_ip_address != NULL);
message = itti_alloc_new_message(TASK_X2AP, SCTP_NEW_ASSOCIATION_REQ_MULTI);
sctp_new_association_req = &message->ittiMsg.sctp_new_association_req_multi;
sctp_new_association_req->port = enb_port_for_X2C;
sctp_new_association_req->ppid = X2AP_SCTP_PPID;
sctp_new_association_req->in_streams = in_streams;
sctp_new_association_req->out_streams = out_streams;
memcpy(&sctp_new_association_req->remote_address,
target_eNB_ip_address,
sizeof(*target_eNB_ip_address));
memcpy(&sctp_new_association_req->local_address,
local_ip_addr,
sizeof(*local_ip_addr));
/* Create new eNB descriptor */
x2ap_enb_data = calloc(1, sizeof(*x2ap_enb_data));
DevAssert(x2ap_enb_data != NULL);
x2ap_enb_data->cnx_id = x2ap_eNB_fetch_add_global_cnx_id();
sctp_new_association_req->ulp_cnx_id = x2ap_enb_data->cnx_id;
x2ap_enb_data->assoc_id = -1;
x2ap_enb_data->x2ap_eNB_instance = instance_p;
/* Insert the new descriptor in list of known eNB
* but not yet associated.
*/
RB_INSERT(x2ap_enb_map, &instance_p->x2ap_enb_head, x2ap_enb_data);
x2ap_enb_data->state = X2AP_ENB_STATE_WAITING;
instance_p->x2_target_enb_nb ++;
instance_p->x2_target_enb_pending_nb ++;
itti_send_msg_to_task(TASK_SCTP, instance_p->instance, message);
}
static
void x2ap_eNB_handle_register_eNB(instance_t instance,
x2ap_register_enb_req_t *x2ap_register_eNB)
{
x2ap_eNB_instance_t *new_instance;
uint8_t index;
DevAssert(x2ap_register_eNB != NULL);
/* Look if the provided instance already exists */
new_instance = x2ap_eNB_get_instance(instance);
if (new_instance != NULL) {
/* Checks if it is a retry on the same eNB */
DevCheck(new_instance->eNB_id == x2ap_register_eNB->eNB_id, new_instance->eNB_id, x2ap_register_eNB->eNB_id, 0);
DevCheck(new_instance->cell_type == x2ap_register_eNB->cell_type, new_instance->cell_type, x2ap_register_eNB->cell_type, 0);
DevCheck(new_instance->tac == x2ap_register_eNB->tac, new_instance->tac, x2ap_register_eNB->tac, 0);
DevCheck(new_instance->mcc == x2ap_register_eNB->mcc, new_instance->mcc, x2ap_register_eNB->mcc, 0);
DevCheck(new_instance->mnc == x2ap_register_eNB->mnc, new_instance->mnc, x2ap_register_eNB->mnc, 0);
}
else {
new_instance = calloc(1, sizeof(x2ap_eNB_instance_t));
DevAssert(new_instance != NULL);
RB_INIT(&new_instance->x2ap_enb_head);
/* Copy usefull parameters */
new_instance->instance = instance;
new_instance->eNB_name = x2ap_register_eNB->eNB_name;
new_instance->eNB_id = x2ap_register_eNB->eNB_id;
new_instance->cell_type = x2ap_register_eNB->cell_type;
new_instance->tac = x2ap_register_eNB->tac;
new_instance->mcc = x2ap_register_eNB->mcc;
new_instance->mnc = x2ap_register_eNB->mnc;
new_instance->mnc_digit_length = x2ap_register_eNB->mnc_digit_length;
/* Add the new instance to the list of eNB (meaningfull in virtual mode) */
x2ap_eNB_insert_new_instance(new_instance);
X2AP_INFO("Registered new eNB[%d] and %s eNB id %u\n",
instance,
x2ap_register_eNB->cell_type == CELL_MACRO_ENB ? "macro" : "home",
x2ap_register_eNB->eNB_id);
/* initiate the SCTP listener */
if (x2ap_eNB_init_sctp(new_instance,&x2ap_register_eNB->enb_x2_ip_address,x2ap_register_eNB->enb_port_for_X2C) < 0 ) {
X2AP_ERROR ("Error while sending SCTP_INIT_MSG to SCTP \n");
return;
}
X2AP_INFO("eNB[%d] eNB id %u acting as a listner (server)\n",
instance, x2ap_register_eNB->eNB_id);
}
DevCheck(x2ap_register_eNB->nb_x2 <= X2AP_MAX_NB_ENB_IP_ADDRESS,
X2AP_MAX_NB_ENB_IP_ADDRESS, x2ap_register_eNB->nb_x2, 0);
/* Trying to connect to the provided list of eNB ip address */
for (index = 0; index < x2ap_register_eNB->nb_x2; index++) {
X2AP_INFO("eNB[%d] eNB id %u acting as an initiator (client)\n",
instance, x2ap_register_eNB->eNB_id);
x2ap_eNB_register_eNB(new_instance,
&x2ap_register_eNB->target_enb_x2_ip_address[index],
&x2ap_register_eNB->enb_x2_ip_address,
x2ap_register_eNB->sctp_in_streams,
x2ap_register_eNB->sctp_out_streams,
x2ap_register_eNB->enb_port_for_X2C);
}
}
void *x2ap_task(void *arg)
{
MessageDef *received_msg = NULL;
int result;
X2AP_DEBUG("Starting X2AP layer\n");
x2ap_eNB_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:
X2AP_WARN(" *** Exiting X2AP thread\n");
itti_exit_task();
break;
case X2AP_REGISTER_ENB_REQ:
x2ap_eNB_handle_register_eNB(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&X2AP_REGISTER_ENB_REQ(received_msg));
break;
case SCTP_NEW_ASSOCIATION_RESP:
x2ap_eNB_handle_sctp_association_resp(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&received_msg->ittiMsg.sctp_new_association_resp);
break;
case SCTP_NEW_ASSOCIATION_IND:
x2ap_eNB_handle_sctp_association_ind(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&received_msg->ittiMsg.sctp_new_association_ind);
break;