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82ba5a35312f9ecde1d97b4bebb4af8a3c87d6d7
openairinterface5g/openair2/GNB_APP/gnb_app.c
T
Melissa Elkadi 82ba5a3531 Code clean up part one. 
This commit includes about 1/3 of the code clean up
in preparation for the merge to the OAI develop
branch. Several of the changes are white space changes,
removing of logs, comment removals, and updating any
changed code for our use-case to be clear for NSA mode.
2021-09-23 12:53:38 -07:00

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/*
* 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
*/
/*
gnb_app.c
-------------------
AUTHOR : Laurent Winckel, Sebastien ROUX, Lionel GAUTHIER, Navid Nikaein, WEI-TAI CHEN
COMPANY : EURECOM, NTUST
EMAIL : Lionel.Gauthier@eurecom.fr and Navid Nikaein, kroempa@gmail.com
*/
#include <string.h>
#include <stdio.h>
#include <nr_pdcp/nr_pdcp.h>
#include <softmodem-common.h>
#include <split_headers.h>
#include <proto_agent.h>
#include "gnb_app.h"
#include "gnb_config.h"
#include "assertions.h"
#include "common/ran_context.h"
#include "common/utils/LOG/log.h"
#include "x2ap_eNB.h"
#include "intertask_interface.h"
#include "ngap_gNB.h"
#include "sctp_eNB_task.h"
#include "gtpv1u_eNB_task.h"
#include "PHY/INIT/phy_init.h"
#include "f1ap_cu_task.h"
#include "f1ap_du_task.h"
#include "nfapi/oai_integration/vendor_ext.h"
#include <openair2/LAYER2/nr_pdcp/nr_pdcp.h>
#include "openair2/LAYER2/PDCP_v10.1.0/pdcp.h"
extern unsigned char NB_gNB_INST;
extern RAN_CONTEXT_t RC;
#define GNB_REGISTER_RETRY_DELAY 10
/*------------------------------------------------------------------------------*/
static void configure_nr_rrc(uint32_t gnb_id)
{
MessageDef *msg_p = NULL;
// int CC_id;
msg_p = itti_alloc_new_message (TASK_GNB_APP, 0, NRRRC_CONFIGURATION_REQ);
if (RC.nrrrc[gnb_id]) {
RCconfig_NRRRC(msg_p,gnb_id, RC.nrrrc[gnb_id]);
LOG_I(GNB_APP, "RRC starting with node type %d\n", RC.nrrrc[gnb_id]->node_type);
LOG_I(GNB_APP,"Sending configuration message to NR_RRC task\n");
itti_send_msg_to_task (TASK_RRC_GNB, GNB_MODULE_ID_TO_INSTANCE(gnb_id), msg_p);
}
else AssertFatal(0,"NRRRC context for gNB %d not allocated\n",gnb_id);
}
/*------------------------------------------------------------------------------*/
static uint32_t gNB_app_register(uint32_t gnb_id_start, uint32_t gnb_id_end)//, const Enb_properties_array_t *enb_properties)
{
uint32_t gnb_id;
MessageDef *msg_p;
uint32_t register_gnb_pending = 0;
for (gnb_id = gnb_id_start; (gnb_id < gnb_id_end) ; gnb_id++) {
{
if(NGAP_CONF_MODE){
ngap_register_gnb_req_t *ngap_register_gNB; //Type Temporarily reuse
// note: there is an implicit relationship between the data structure and the message name
msg_p = itti_alloc_new_message (TASK_GNB_APP, 0, NGAP_REGISTER_GNB_REQ); //Message Temporarily reuse
RCconfig_NR_NG(msg_p, gnb_id);
ngap_register_gNB = &NGAP_REGISTER_GNB_REQ(msg_p); //Message Temporarily reuse
LOG_I(GNB_APP,"default drx %d\n",ngap_register_gNB->default_drx);
itti_send_msg_to_task (TASK_NGAP, GNB_MODULE_ID_TO_INSTANCE(gnb_id), msg_p);
}
if (gnb_id == 0) RCconfig_nr_gtpu();
}
LOG_I(GNB_APP,"[gNB %d] gNB_app_register for instance %d\n", gnb_id, GNB_MODULE_ID_TO_INSTANCE(gnb_id));
register_gnb_pending++;
}
return register_gnb_pending;
}
/*------------------------------------------------------------------------------*/
static uint32_t gNB_app_register_x2(uint32_t gnb_id_start, uint32_t gnb_id_end) {
uint32_t gnb_id;
MessageDef *msg_p;
uint32_t register_gnb_x2_pending = 0;
for (gnb_id = gnb_id_start; (gnb_id < gnb_id_end) ; gnb_id++) {
{
msg_p = itti_alloc_new_message (TASK_GNB_APP, 0, X2AP_REGISTER_ENB_REQ);
LOG_I(X2AP, "GNB_ID: %d \n", gnb_id);
RCconfig_NR_X2(msg_p, gnb_id);
itti_send_msg_to_task (TASK_X2AP, ENB_MODULE_ID_TO_INSTANCE(gnb_id), msg_p);
register_gnb_x2_pending++;
}
}
return register_gnb_x2_pending;
}
/*------------------------------------------------------------------------------*/
static void init_pdcp(void) {
if (!NODE_IS_DU(RC.nrrrc[0]->node_type)) {
pdcp_layer_init();
uint32_t pdcp_initmask = (IS_SOFTMODEM_NOS1) ?
(PDCP_USE_NETLINK_BIT | LINK_ENB_PDCP_TO_IP_DRIVER_BIT) : LINK_ENB_PDCP_TO_GTPV1U_BIT;
if (IS_SOFTMODEM_NOS1) {
LOG_I(PDCP, "IS_SOFTMODEM_NOS1 option enabled\n");
pdcp_initmask = pdcp_initmask | ENB_NAS_USE_TUN_BIT | SOFTMODEM_NOKRNMOD_BIT;
}
nr_pdcp_module_init(pdcp_initmask, 0);
if (NODE_IS_CU(RC.nrrrc[0]->node_type)) {
LOG_I(PDCP, "node is CU, pdcp send rlc_data_req by proto_agent \n");
pdcp_set_rlc_data_req_func((send_rlc_data_req_func_t)proto_agent_send_rlc_data_req);
} else {
LOG_I(PDCP, "node is gNB \n");
pdcp_set_rlc_data_req_func((send_rlc_data_req_func_t) rlc_data_req);
pdcp_set_pdcp_data_ind_func((pdcp_data_ind_func_t) pdcp_data_ind);
}
} else {
LOG_I(PDCP, "node is DU, rlc send pdcp_data_ind by proto_agent \n");
pdcp_set_pdcp_data_ind_func((pdcp_data_ind_func_t) proto_agent_send_pdcp_data_ind);
}
}
/*------------------------------------------------------------------------------*/
void *gNB_app_task(void *args_p)
{
uint32_t gnb_nb = RC.nb_nr_inst;
uint32_t gnb_id_start = 0;
uint32_t gnb_id_end = gnb_id_start + gnb_nb;
uint32_t gnb_id;
MessageDef *msg_p = NULL;
const char *msg_name = NULL;
instance_t instance;
int result;
/* for no gcc warnings */
(void)instance;
int cell_to_activate = 0;
itti_mark_task_ready (TASK_GNB_APP);
LOG_I(PHY, "%s() Task ready initialize structures\n", __FUNCTION__);
RCconfig_NR_L1();
if (RC.nb_nr_macrlc_inst>0) RCconfig_nr_macrlc();
LOG_I(PHY, "%s() RC.nb_nr_L1_inst:%d\n", __FUNCTION__, RC.nb_nr_L1_inst);
if (RC.nb_nr_L1_inst>0) AssertFatal(l1_north_init_gNB()==0,"could not initialize L1 north interface\n");
AssertFatal (gnb_nb <= RC.nb_nr_inst,
"Number of gNB is greater than gNB defined in configuration file (%d/%d)!",
gnb_nb, RC.nb_nr_inst);
LOG_I(GNB_APP,"Allocating gNB_RRC_INST for %d instances\n",RC.nb_nr_inst);
RC.nrrrc = (gNB_RRC_INST **)malloc(RC.nb_nr_inst*sizeof(gNB_RRC_INST *));
LOG_I(PHY, "%s() RC.nb_nr_inst:%d RC.nrrrc:%p\n", __FUNCTION__, RC.nb_nr_inst, RC.nrrrc);
for (gnb_id = gnb_id_start; (gnb_id < gnb_id_end) ; gnb_id++) {
RC.nrrrc[gnb_id] = (gNB_RRC_INST*)malloc(sizeof(gNB_RRC_INST));
LOG_I(PHY, "%s() Creating RRC instance RC.nrrrc[%d]:%p (%d of %d)\n", __FUNCTION__, gnb_id, RC.nrrrc[gnb_id], gnb_id+1, gnb_id_end);
memset((void *)RC.nrrrc[gnb_id],0,sizeof(gNB_RRC_INST));
configure_nr_rrc(gnb_id);
}
if (RC.nb_nr_inst > 0 && !get_softmodem_params()->nsa) {
init_pdcp();
}
if (is_x2ap_enabled() ) { //&& !NODE_IS_DU(RC.rrc[0]->node_type)
LOG_I(X2AP, "X2AP enabled \n");
__attribute__((unused)) uint32_t x2_register_gnb_pending = gNB_app_register_x2 (gnb_id_start, gnb_id_end);
}
/* For the CU case the gNB registration with the AMF might have to take place after the F1 setup, as the PLMN info
* can originate from the DU. Add check on whether x2ap is enabled to account for ENDC NSA scenario.*/
if ((AMF_MODE_ENABLED || is_x2ap_enabled()) && !NODE_IS_DU(RC.nrrrc[0]->node_type) && !NODE_IS_CU(RC.nrrrc[0]->node_type)) {
/* Try to register each gNB */
//registered_gnb = 0;
__attribute__((unused)) uint32_t register_gnb_pending = gNB_app_register (gnb_id_start, gnb_id_end);
}
if (RC.nb_nr_inst > 0) {
if (NODE_IS_CU(RC.nrrrc[0]->node_type)) {
if (itti_create_task(TASK_CU_F1, F1AP_CU_task, NULL) < 0) {
LOG_E(F1AP, "Create task for F1AP CU failed\n");
AssertFatal(1==0,"exiting");
}
}
if (NODE_IS_DU(RC.nrrrc[0]->node_type)) {
if (itti_create_task(TASK_DU_F1, F1AP_DU_task, NULL) < 0) {
LOG_E(F1AP, "Create task for F1AP DU failed\n");
AssertFatal(1==0,"exiting");
}
// configure F1AP here for F1C
LOG_I(GNB_APP,"ngran_gNB_DU: Allocating ITTI message for F1AP_SETUP_REQ\n");
msg_p = itti_alloc_new_message (TASK_GNB_APP, 0, F1AP_SETUP_REQ);
RCconfig_NR_DU_F1(msg_p, 0);
itti_send_msg_to_task (TASK_DU_F1, GNB_MODULE_ID_TO_INSTANCE(0), msg_p);
}
}
do {
// Wait for a message
itti_receive_msg (TASK_GNB_APP, &msg_p);
msg_name = ITTI_MSG_NAME (msg_p);
instance = ITTI_MSG_DESTINATION_INSTANCE (msg_p);
switch (ITTI_MSG_ID(msg_p)) {
case TERMINATE_MESSAGE:
LOG_W(GNB_APP, " *** Exiting GNB_APP thread\n");
itti_exit_task ();
break;
case MESSAGE_TEST:
LOG_I(GNB_APP, "Received %s\n", ITTI_MSG_NAME(msg_p));
break;
case NGAP_REGISTER_GNB_CNF:
LOG_I(GNB_APP, "[gNB %ld] Received %s: associated AMF %d\n", instance, msg_name,
NGAP_REGISTER_GNB_CNF(msg_p).nb_amf);
/*
DevAssert(register_gnb_pending > 0);
register_gnb_pending--;
// Check if at least gNB is registered with one AMF
if (NGAP_REGISTER_GNB_CNF(msg_p).nb_amf > 0) {
registered_gnb++;
}
// Check if all register gNB requests have been processed
if (register_gnb_pending == 0) {
if (registered_gnb == gnb_nb) {
// If all gNB are registered, start L2L1 task
MessageDef *msg_init_p;
msg_init_p = itti_alloc_new_message (TASK_GNB_APP, 0, INITIALIZE_MESSAGE);
itti_send_msg_to_task (TASK_L2L1, INSTANCE_DEFAULT, msg_init_p);
} else {
uint32_t not_associated = gnb_nb - registered_gnb;
LOG_W(GNB_APP, " %d gNB %s not associated with a AMF, retrying registration in %d seconds ...\n",
not_associated, not_associated > 1 ? "are" : "is", GNB_REGISTER_RETRY_DELAY);
// Restart the gNB registration process in GNB_REGISTER_RETRY_DELAY seconds
if (timer_setup (GNB_REGISTER_RETRY_DELAY, 0, TASK_GNB_APP, INSTANCE_DEFAULT, TIMER_ONE_SHOT,
NULL, &gnb_register_retry_timer_id) < 0) {
LOG_E(GNB_APP, " Can not start gNB register retry timer, use \"sleep\" instead!\n");
sleep(GNB_REGISTER_RETRY_DELAY);
// Restart the registration process
registered_gnb = 0;
register_gnb_pending = gNB_app_register (gnb_id_start, gnb_id_end);//, gnb_properties_p);
}
}
}
*/
break;
case F1AP_SETUP_RESP:
AssertFatal(NODE_IS_DU(RC.nrrrc[0]->node_type), "Should not have received F1AP_SETUP_RESP in CU/gNB\n");
LOG_I(GNB_APP, "Received %s: associated ngran_gNB_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);
cell_to_activate = F1AP_SETUP_RESP(msg_p).num_cells_to_activate;
gNB_app_handle_f1ap_setup_resp(&F1AP_SETUP_RESP(msg_p));
break;
case F1AP_GNB_CU_CONFIGURATION_UPDATE:
AssertFatal(NODE_IS_DU(RC.nrrrc[0]->node_type), "Should not have received F1AP_GNB_CU_CONFIGURATION_UPDATE in CU/gNB\n");
LOG_I(GNB_APP, "Received %s: associated ngran_gNB_CU %s with %d cells to activate\n", ITTI_MSG_NAME (msg_p),
F1AP_GNB_CU_CONFIGURATION_UPDATE(msg_p).gNB_CU_name,F1AP_GNB_CU_CONFIGURATION_UPDATE(msg_p).num_cells_to_activate);
cell_to_activate += F1AP_GNB_CU_CONFIGURATION_UPDATE(msg_p).num_cells_to_activate;
gNB_app_handle_f1ap_gnb_cu_configuration_update(&F1AP_GNB_CU_CONFIGURATION_UPDATE(msg_p));
/* Check if at least gNB is registered with one AMF */
AssertFatal(cell_to_activate == 1,"No cells to activate or cells > 1 %d\n",cell_to_activate);
break;
case NGAP_DEREGISTERED_GNB_IND:
LOG_W(GNB_APP, "[gNB %ld] Received %s: associated AMF %d\n", instance, msg_name,
NGAP_DEREGISTERED_GNB_IND(msg_p).nb_amf);
/* TODO handle recovering of registration */
break;
case TIMER_HAS_EXPIRED:
LOG_I(GNB_APP, " Received %s: timer_id %ld\n", msg_name, TIMER_HAS_EXPIRED(msg_p).timer_id);
//if (TIMER_HAS_EXPIRED (msg_p).timer_id == gnb_register_retry_timer_id) {
/* Restart the registration process */
// registered_gnb = 0;
// register_gnb_pending = gNB_app_register(gnb_id_start, gnb_id_end);//, gnb_properties_p);
//}
break;
default:
LOG_E(GNB_APP, "Received unexpected message %s\n", msg_name);
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;
}
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