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openairinterface5g/executables/nr-softmodem.c
Robert Schmidt d3026267b3 Merge remote-tracking branch 'origin/remove-sched-response-doc' into integration_2025_w46 (!3757) 
Remove schedule response and update L1 threading documentation

This merge requests removes the somewhat superfluous "schedule response"
mechanism. "schedule response" was run after running the scheduler
itself and copied various FAPI messages into a global msgDataTx
structure from which the various TX/RX jobs were triggered. It is not
necessary, though, given that the scheduler is run inside the tx_func()
(running the TX jobs of the L1), and so the scheduler output FAPI
messages can directly be read into a variable of the existing
NR_Sched_Rsp_t type. This allows to delete a couple of hundred lines of
code (while retaining functionality), and simplifies the msgDataTx type
(which is still there to trigger TX job (including the scheduler) from
the ru thread).

In short, prior, there was this call chain:

- tx_func() calls run_scheduler_monolithic() (through fptr
  NR_slot_indication())
  - get some memory through allocate_sched_response() which has enough
    space for NR_Sched_Rsp_t type variable
  - call the scheduler and fill the variable
  - call nr_schedule_response() (through fptr NR_schedule_response())
    which copies into L1: to msgDataTx for TX, to separate structures
    for RX

this is changed to

- tx_func() runs one message at a time, hence we can use memory in the
  data segment for NR_Sched_Rsp_t. It calls run_scheduler_monolithic()
  through the fptr
  - pointers into NR_Sched_Rsp_t are passed to the scheduler, which
    fills as before
  - we return, memory is in its right place and does not need an extra
    copy.

Additionally, this merge request updates documentation on threading and
cleans up some unused code along the way.
2025-11-14 22:03:01 +01:00

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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
*/
#define _GNU_SOURCE /* See feature_test_macros(7) */
#include "common/config/config_userapi.h"
#include "common/utils/load_module_shlib.h"
#ifdef SMBV
#include "PHY/TOOLS/smbv.h"
unsigned short config_frames[4] = {2,9,11,13};
#endif
#include "common/utils/time_manager/time_manager.h"
#ifdef ENABLE_AERIAL
#include "nfapi/oai_integration/aerial/fapi_nvIPC.h"
#endif
#ifdef E2_AGENT
#include "openair2/E2AP/flexric/src/agent/e2_agent_api.h"
#include "openair2/E2AP/RAN_FUNCTION/init_ran_func.h"
#endif
#include "nr-softmodem.h"
#include <common/utils/assertions.h>
#include <openair2/GNB_APP/gnb_app.h>
#include <openair3/ocp-gtpu/gtp_itf.h>
#include <pthread.h>
#include <sched.h>
#include <simple_executable.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "LAYER2/nr_pdcp/nr_pdcp_oai_api.h"
#include "NR_PHY_INTERFACE/NR_IF_Module.h"
#include "LAYER2/NR_MAC_gNB/nr_mac_gNB.h"
#include "PHY/INIT/nr_phy_init.h"
#include "PHY/TOOLS/phy_scope_interface.h"
#include "PHY/defs_gNB.h"
#include "PHY/defs_nr_common.h"
#include "PHY/phy_vars.h"
#include "RRC/NR/nr_rrc_defs.h"
#include "RRC/NR/nr_rrc_proto.h"
#include "RRC_nr_paramsvalues.h"
#include "SIMULATION/TOOLS/sim.h"
#include "T.h"
#include "UTIL/OPT/opt.h"
#include "common/config/config_userapi.h"
#include "common/ngran_types.h"
#include "common/oai_version.h"
#include "common/ran_context.h"
#include "common/utils/LOG/log.h"
#include "e1ap_messages_types.h"
#include "executables/softmodem-common.h"
#include "gnb_config.h"
#include "gnb_paramdef.h"
#include "intertask_interface.h"
#include "nfapi/oai_integration/vendor_ext.h"
#include "nfapi_interface.h"
#include "nfapi_nr_interface_scf.h"
#include "ngap_gNB.h"
#include "nr-softmodem-common.h"
#include "openair2/E1AP/e1ap_common.h"
#include "pdcp.h"
#include "radio/COMMON/common_lib.h"
#include "s1ap_eNB.h"
#include "sctp_eNB_task.h"
#include "system.h"
#include "time_meas.h"
#include "utils.h"
#include "x2ap_eNB.h"
#include "openair1/SCHED_NR/sched_nr.h"
#include "openair2/SDAP/nr_sdap/nr_sdap.h"
pthread_cond_t nfapi_sync_cond;
pthread_mutex_t nfapi_sync_mutex;
int nfapi_sync_var=-1; //!< protected by mutex \ref nfapi_sync_mutex
THREAD_STRUCT thread_struct;
pthread_cond_t sync_cond;
pthread_mutex_t sync_mutex;
int sync_var=-1; //!< protected by mutex \ref sync_mutex.
int config_sync_var=-1;
int oai_exit = 0;
unsigned int mmapped_dma=0;
uint64_t downlink_frequency[MAX_NUM_CCs][4];
int32_t uplink_frequency_offset[MAX_NUM_CCs][4];
char *uecap_file;
runmode_t mode = normal_txrx;
#if MAX_NUM_CCs == 1
double tx_gain[MAX_NUM_CCs][4] = {{20,0,0,0}};
double rx_gain[MAX_NUM_CCs][4] = {{110,0,0,0}};
#else
double tx_gain[MAX_NUM_CCs][4] = {{20,0,0,0},{20,0,0,0}};
double rx_gain[MAX_NUM_CCs][4] = {{110,0,0,0},{20,0,0,0}};
#endif
double rx_gain_off = 0.0;
static int tx_max_power[MAX_NUM_CCs]; /* = {0,0}*/;
int chain_offset = 0;
int numerology = 0;
double cpuf;
/* hack: pdcp_run() is required by 4G scheduler which is compiled into
* nr-softmodem because of linker issues */
void pdcp_run(const protocol_ctxt_t *const ctxt_pP)
{
abort();
}
/*------------------------------------------------------------------------*/
unsigned int build_rflocal(int txi, int txq, int rxi, int rxq) {
return (txi + (txq<<6) + (rxi<<12) + (rxq<<18));
}
unsigned int build_rfdc(int dcoff_i_rxfe, int dcoff_q_rxfe) {
return (dcoff_i_rxfe + (dcoff_q_rxfe<<8));
}
#define KNRM "\x1B[0m"
#define KRED "\x1B[31m"
#define KGRN "\x1B[32m"
#define KBLU "\x1B[34m"
#define RESET "\033[0m"
void exit_function(const char *file, const char *function, const int line, const char *s, const int assert)
{
int ru_id;
if (s != NULL) {
printf("%s:%d %s() Exiting OAI softmodem: %s\n",file,line, function, s);
}
oai_exit = 1;
if (RC.ru == NULL)
exit(-1); // likely init not completed, prevent crash or hang, exit now...
for (ru_id=0; ru_id<RC.nb_RU; ru_id++) {
if (RC.ru[ru_id] && RC.ru[ru_id]->rfdevice.trx_end_func) {
if (RC.ru[ru_id]->rfdevice.trx_get_stats_func) {
RC.ru[ru_id]->rfdevice.trx_get_stats_func(&RC.ru[ru_id]->rfdevice);
RC.ru[ru_id]->rfdevice.trx_get_stats_func = NULL;
}
RC.ru[ru_id]->rfdevice.trx_end_func(&RC.ru[ru_id]->rfdevice);
RC.ru[ru_id]->rfdevice.trx_end_func = NULL;
}
if (RC.ru[ru_id] && RC.ru[ru_id]->ifdevice.trx_end_func) {
if (RC.ru[ru_id]->ifdevice.trx_get_stats_func) {
RC.ru[ru_id]->ifdevice.trx_get_stats_func(&RC.ru[ru_id]->ifdevice);
RC.ru[ru_id]->ifdevice.trx_get_stats_func = NULL;
}
RC.ru[ru_id]->ifdevice.trx_end_func(&RC.ru[ru_id]->ifdevice);
RC.ru[ru_id]->ifdevice.trx_end_func = NULL;
}
}
if (assert) {
abort();
} else {
sleep(1); // allow nr-softmodem threads to exit first
exit(EXIT_SUCCESS);
}
}
static int create_gNB_tasks(ngran_node_t node_type, configmodule_interface_t *cfg)
{
uint32_t gnb_nb = RC.nb_nr_inst;
uint32_t gnb_id_start = 0;
uint32_t gnb_id_end = gnb_id_start + gnb_nb;
LOG_D(GNB_APP, "%s(gnb_nb:%d)\n", __FUNCTION__, gnb_nb);
itti_wait_ready(1);
LOG_D(PHY, "%s() Task ready initialize structures\n", __FUNCTION__);
#ifdef ENABLE_AERIAL
AssertFatal(NFAPI_MODE == NFAPI_MODE_AERIAL,"Can only be run with '--nfapi AERIAL' when compiled with AERIAL support, if you want to run other (n)FAPI modes, please run ./build_oai without -w AERIAL");
#endif
RCconfig_verify(cfg, node_type);
if (RC.nb_nr_macrlc_inst > 0)
RCconfig_nr_macrlc(cfg);
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_D(GNB_APP, "Allocating gNB_RRC_INST\n");
RC.nrrrc = calloc(1, sizeof(*RC.nrrrc));
RC.nrrrc[0] = RCconfig_NRRRC();
if (node_type != ngran_gNB_DU) {
// we start pdcp in both cuup (for drb) and cucp (for srb)
nr_pdcp_layer_init();
}
if (get_softmodem_params()->nsa) { //&& !NODE_IS_DU(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 (IS_SA_MODE(get_softmodem_params()) && !NODE_IS_DU(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 (gnb_nb > 0) {
if(itti_create_task(TASK_SCTP, sctp_eNB_task, NULL) < 0) {
LOG_E(SCTP, "Create task for SCTP failed\n");
return -1;
}
if (get_softmodem_params()->nsa) {
if(itti_create_task(TASK_X2AP, x2ap_task, NULL) < 0) {
LOG_E(X2AP, "Create task for X2AP failed\n");
}
} else {
LOG_I(X2AP, "X2AP is disabled.\n");
}
}
if (IS_SA_MODE(get_softmodem_params()) && !NODE_IS_DU(node_type)) {
char* gnb_ipv4_address_for_NGU = NULL;
uint32_t gnb_port_for_NGU = 0;
char* gnb_ipv4_address_for_S1U = NULL;
uint32_t gnb_port_for_S1U = 0;
paramdef_t NETParams[] = GNBNETPARAMS_DESC;
char aprefix[MAX_OPTNAME_SIZE*2 + 8];
sprintf(aprefix,"%s.[%i].%s",GNB_CONFIG_STRING_GNB_LIST,0,GNB_CONFIG_STRING_NETWORK_INTERFACES_CONFIG);
config_get(cfg, NETParams, sizeofArray(NETParams), aprefix);
if (gnb_nb > 0) {
if (itti_create_task (TASK_NGAP, ngap_gNB_task, NULL) < 0) {
LOG_E(NGAP, "Create task for NGAP failed\n");
return -1;
}
}
}
if (gnb_nb > 0) {
if (!NODE_IS_DU(node_type)) {
if (itti_create_task (TASK_RRC_GNB, rrc_gnb_task, NULL) < 0) {
LOG_E(NR_RRC, "Create task for NR RRC gNB failed\n");
return -1;
}
}
// E1AP initialisation, whether the node is a CU or has integrated CU
if (node_type == ngran_gNB_CU || node_type == ngran_gNB) {
MessageDef *msg = RCconfig_NR_CU_E1(NULL);
instance_t inst = 0;
createE1inst(UPtype, inst, E1AP_REGISTER_REQ(msg).gnb_id, &E1AP_REGISTER_REQ(msg).net_config, NULL);
cuup_init_n3(inst);
RC.nrrrc[gnb_id_start]->e1_inst = inst; // stupid instance !!!*/
/* send E1 Setup Request to RRC */
MessageDef *new_msg = itti_alloc_new_message(TASK_GNB_APP, 0, E1AP_SETUP_REQ);
E1AP_SETUP_REQ(new_msg) = E1AP_REGISTER_REQ(msg).setup_req;
new_msg->ittiMsgHeader.originInstance = -1; /* meaning, it is local */
itti_send_msg_to_task(TASK_RRC_GNB, 0 /*unused by callee*/, new_msg);
itti_free(TASK_UNKNOWN, msg);
}
if (itti_create_task (TASK_GNB_APP, gNB_app_task, NULL) < 0) {
LOG_E(GNB_APP, "Create task for gNB APP failed\n");
return -1;
}
//Use check on x2ap to consider the NSA scenario
if((is_x2ap_enabled() || IS_SA_MODE(get_softmodem_params())) && (node_type != ngran_gNB_CUCP)) {
if (itti_create_task (TASK_GTPV1_U, &gtpv1uTask, NULL) < 0) {
LOG_E(GTPU, "Create task for GTPV1U failed\n");
return -1;
}
}
}
return 0;
}
static void get_options(configmodule_interface_t *cfg)
{
paramdef_t cmdline_params[] = CMDLINE_PARAMS_DESC_GNB ;
CONFIG_SETRTFLAG(CONFIG_NOEXITONHELP);
IS_SOFTMODEM_GNB = true;
get_common_options(cfg);
config_process_cmdline(cfg, cmdline_params, sizeofArray(cmdline_params), NULL);
CONFIG_CLEARRTFLAG(CONFIG_NOEXITONHELP);
}
void wait_RUs(void) {
LOG_D(PHY, "Waiting for RUs to be configured ... RC.ru_mask:%02lx\n", RC.ru_mask);
// wait for all RUs to be configured over fronthaul
pthread_mutex_lock(&RC.ru_mutex);
while (RC.ru_mask>0) {
pthread_cond_wait(&RC.ru_cond,&RC.ru_mutex);
}
pthread_mutex_unlock(&RC.ru_mutex);
LOG_D(PHY, "RUs configured\n");
}
void wait_gNBs(void) {
int i;
int waiting=1;
while (waiting==1) {
LOG_D(GNB_APP, "Waiting for gNB L1 instances to all get configured ... sleeping 50ms (nb_nr_sL1_inst %d)\n", RC.nb_nr_L1_inst);
usleep(50*1000);
waiting=0;
for (i=0; i<RC.nb_nr_L1_inst; i++) {
if (RC.gNB[i]->configured==0) {
waiting=1;
break;
}
}
}
LOG_D(GNB_APP, "gNB L1 are configured\n");
}
/*
* helper function to terminate a certain ITTI task
*/
void terminate_task(task_id_t task_id, module_id_t mod_id) {
LOG_I(GNB_APP, "sending TERMINATE_MESSAGE to task %s (%d)\n", itti_get_task_name(task_id), task_id);
MessageDef *msg;
msg = itti_alloc_new_message (TASK_ENB_APP, 0, TERMINATE_MESSAGE);
itti_send_msg_to_task (task_id, ENB_MODULE_ID_TO_INSTANCE(mod_id), msg);
}
int stop_L1(module_id_t gnb_id)
{
RU_t *ru = RC.ru[gnb_id];
if (!ru) {
LOG_W(GNB_APP, "no RU configured\n");
return -1;
}
if (!RC.gNB[gnb_id]->configured) {
LOG_W(GNB_APP, "L1 already stopped\n");
return -1;
}
LOG_I(GNB_APP, "stopping nr-softmodem\n");
oai_exit = 1;
/* these tasks/layers need to pick up new configuration */
if (RC.nb_nr_L1_inst > 0)
stop_gNB(RC.nb_nr_L1_inst);
if (RC.nb_RU > 0)
stop_RU(RC.nb_RU);
/* stop trx devices, multiple carrier currently not supported by RU */
if (ru->rfdevice.trx_get_stats_func) {
ru->rfdevice.trx_get_stats_func(&ru->rfdevice);
}
if (ru->rfdevice.trx_stop_func) {
ru->rfdevice.trx_stop_func(&ru->rfdevice);
LOG_I(GNB_APP, "turned off RU rfdevice\n");
}
if (ru->ifdevice.trx_get_stats_func) {
ru->ifdevice.trx_get_stats_func(&ru->rfdevice);
}
if (ru->ifdevice.trx_stop_func) {
ru->ifdevice.trx_stop_func(&ru->ifdevice);
LOG_I(GNB_APP, "turned off RU ifdevice\n");
}
/* release memory used by the RU/gNB threads (incomplete), after all
* threads have been stopped (they partially use the same memory) */
for (int inst = 0; inst < RC.nb_RU; inst++) {
nr_phy_free_RU(RC.ru[inst]);
}
for (int inst = 0; inst < RC.nb_nr_L1_inst; inst++) {
phy_free_nr_gNB(RC.gNB[inst]);
}
RC.gNB[gnb_id]->configured = 0;
return 0;
}
/*
* Restart the nr-softmodem after it has been soft-stopped with stop_L1L2()
*/
#include "openair2/LAYER2/NR_MAC_gNB/mac_proto.h"
int start_L1L2(module_id_t gnb_id)
{
LOG_I(GNB_APP, "starting nr-softmodem\n");
/* block threads */
oai_exit = 0;
sync_var = -1;
/* update config */
gNB_MAC_INST *mac = RC.nrmac[0];
NR_ServingCellConfigCommon_t *scc = mac->common_channels[0].ServingCellConfigCommon;
nr_mac_config_scc(mac, scc, &mac->radio_config);
NR_BCCH_BCH_Message_t *mib = mac->common_channels[0].mib;
const NR_BCCH_DL_SCH_Message_t *sib1 = mac->common_channels[0].sib1;
f1ap_setup_req_t *sr = mac->f1_config.setup_req;
DevAssert(sr->num_cells_available == 1);
f1ap_served_cell_info_t *info = &sr->cell[0].info;
DevAssert(info->mode == F1AP_MODE_TDD);
/* update existing config in F1 Setup request structures */
DevAssert(scc->tdd_UL_DL_ConfigurationCommon != NULL);
info->tdd = read_tdd_config(scc); /* updates radio config */
prepare_du_configuration_update(mac, info, mib, sib1);
init_NR_RU(config_get_if(), NULL);
start_NR_RU();
wait_RUs();
init_eNB_afterRU();
LOG_I(GNB_APP, "Sending sync to all threads\n");
pthread_mutex_lock(&sync_mutex);
sync_var=0;
pthread_cond_broadcast(&sync_cond);
pthread_mutex_unlock(&sync_mutex);
return 0;
}
static void wait_nfapi_init(char *thread_name)
{
pthread_mutex_lock( &nfapi_sync_mutex );
while (nfapi_sync_var<0)
pthread_cond_wait( &nfapi_sync_cond, &nfapi_sync_mutex );
pthread_mutex_unlock(&nfapi_sync_mutex);
}
#ifdef E2_AGENT
static void initialize_agent(ngran_node_t node_type, e2_agent_args_t oai_args)
{
AssertFatal(oai_args.sm_dir != NULL , "Please, specify the directory where the SMs are located in the config file, i.e., add in config file the next line: e2_agent = {near_ric_ip_addr = \"127.0.0.1\"; sm_dir = \"/usr/local/lib/flexric/\");} ");
AssertFatal(oai_args.ip != NULL , "Please, specify the IP address of the nearRT-RIC in the config file, i.e., e2_agent = {near_ric_ip_addr = \"127.0.0.1\"; sm_dir = \"/usr/local/lib/flexric/\"");
printf("After RCconfig_NR_E2agent %s %s \n",oai_args.sm_dir, oai_args.ip );
fr_args_t args = {0};
memcpy(args.ip, oai_args.ip, FR_IP_ADDRESS_LEN);
memcpy(args.libs_dir, oai_args.sm_dir, FR_CONF_FILE_LEN);
sleep(1);
const gNB_RRC_INST* rrc = RC.nrrrc[0];
assert(rrc != NULL && "rrc cannot be NULL");
const int mcc = rrc->configuration.plmn[0].mcc;
const int mnc = rrc->configuration.plmn[0].mnc;
const int mnc_digit_len = rrc->configuration.plmn[0].mnc_digit_length;
// const ngran_node_t node_type = rrc->node_type;
int nb_id = 0;
int cu_du_id = 0;
if (node_type == ngran_gNB) {
nb_id = rrc->node_id;
} else if (node_type == ngran_gNB_DU) {
const gNB_MAC_INST* mac = RC.nrmac[0];
AssertFatal(mac, "MAC not initialized\n");
cu_du_id = mac->f1_config.gnb_id;
nb_id = mac->f1_config.setup_req->gNB_DU_id;
} else if (node_type == ngran_gNB_CU || node_type == ngran_gNB_CUCP) {
// agent buggy: the CU has no second ID, it is the CU-UP ID
// however, that is not a problem her for us, so put the same ID twice
nb_id = rrc->node_id;
cu_du_id = rrc->node_id;
} else {
LOG_E(NR_RRC, "not supported ran type detect\n");
}
printf("[E2 NODE]: mcc = %d mnc = %d mnc_digit = %d nb_id = %d \n", mcc, mnc, mnc_digit_len, nb_id);
printf("[E2 NODE]: Args %s %s \n", args.ip, args.libs_dir);
sm_io_ag_ran_t io = init_ran_func_ag();
init_agent_api(mcc, mnc, mnc_digit_len, nb_id, cu_du_id, node_type, io, &args);
}
#endif
void init_eNB_afterRU(void);
configmodule_interface_t *uniqCfg = NULL;
int main( int argc, char **argv ) {
int ru_id, CC_id = 0;
start_background_system();
///static configuration for NR at the moment
if ((uniqCfg = load_configmodule(argc, argv, CONFIG_ENABLECMDLINEONLY)) == NULL) {
exit_fun("[SOFTMODEM] Error, configuration module init failed\n");
}
set_softmodem_sighandler();
#ifdef DEBUG_CONSOLE
setvbuf(stdout, NULL, _IONBF, 0);
setvbuf(stderr, NULL, _IONBF, 0);
#endif
mode = normal_txrx;
memset(tx_max_power,0,sizeof(int)*MAX_NUM_CCs);
logInit();
lock_memory_to_ram();
get_options(uniqCfg);
if (CONFIG_ISFLAGSET(CONFIG_ABORT) ) {
fprintf(stderr,"Getting configuration failed\n");
exit(-1);
}
if (!has_cap_sys_nice())
LOG_W(UTIL,
"no SYS_NICE capability: cannot set thread priority and affinity, consider running with sudo for optimum performance\n");
softmodem_verify_mode(get_softmodem_params());
#if T_TRACER
T_Config_Init();
#endif
//randominit (0);
set_taus_seed (0);
cpuf=get_cpu_freq_GHz();
itti_init(TASK_MAX, tasks_info);
// initialize mscgen log after ITTI
init_opt();
// strdup to put the sring in the core file for post mortem identification
char *pckg = strdup(OAI_PACKAGE_VERSION);
LOG_I(HW, "Version: %s\n", pckg);
// Init RAN context
if (!(CONFIG_ISFLAGSET(CONFIG_ABORT)))
NRRCConfig();
if (RC.nb_nr_L1_inst > 0) {
// Initialize gNB structure in RAN context
init_gNB();
// Initialize L1
RCconfig_NR_L1();
// Initialize Positioning Reference Signal configuration
if(NFAPI_MODE != NFAPI_MODE_PNF && NFAPI_MODE != NFAPI_MODE_AERIAL)
RCconfig_nr_prs();
}
// don't create if node doesn't connect to RRC/S1/GTP
const ngran_node_t node_type = get_node_type();
if (NFAPI_MODE != NFAPI_MODE_PNF) {
int ret = create_gNB_tasks(node_type, uniqCfg);
AssertFatal(ret == 0, "cannot create ITTI tasks\n");
}
pthread_cond_init(&sync_cond,NULL);
pthread_mutex_init(&sync_mutex, NULL);
usleep(1000);
if (NFAPI_MODE && NFAPI_MODE != NFAPI_MODE_AERIAL) {
pthread_cond_init(&sync_cond,NULL);
pthread_mutex_init(&sync_mutex, NULL);
}
// start time manager with some reasonable default for the running mode
// (may be overwritten in configuration file or command line)
void nr_pdcp_ms_tick(void);
void x2ap_ms_tick();
void nr_rlc_ms_tick(void);
time_manager_tick_function_t tick_functions[3];
int tick_functions_count = 0;
if (NODE_IS_MONOLITHIC(node_type)) {
/* monolithic */
tick_functions[tick_functions_count++] = nr_pdcp_ms_tick;
tick_functions[tick_functions_count++] = nr_rlc_ms_tick;
/* x2ap is enabled when in NSA mode */
if (get_softmodem_params()->nsa)
tick_functions[tick_functions_count++] = x2ap_ms_tick;
} else if (NODE_IS_CU(node_type)) {
/* CU */
tick_functions[tick_functions_count++] = nr_pdcp_ms_tick;
/* x2ap is enabled when in NSA mode */
if (get_softmodem_params()->nsa)
tick_functions[tick_functions_count++] = x2ap_ms_tick;
} else {
/* DU */
tick_functions[tick_functions_count++] = nr_rlc_ms_tick;
}
time_manager_start(tick_functions, tick_functions_count,
// iq_samples time source for monolithic/du with rfsim,
// realtime time source for other cases
IS_SOFTMODEM_RFSIM
&& (NODE_IS_MONOLITHIC(node_type) || NODE_IS_DU(node_type))
? TIME_SOURCE_IQ_SAMPLES
: TIME_SOURCE_REALTIME);
// start the main threads
number_of_cards = 1;
wait_gNBs();
int sl_ahead = NFAPI_MODE == NFAPI_MODE_AERIAL ? 0 : 6;
if (RC.nb_RU >0) {
init_NR_RU(uniqCfg, get_softmodem_params()->rf_config_file);
for (ru_id=0; ru_id<RC.nb_RU; ru_id++) {
RC.ru[ru_id]->rf_map.card=0;
RC.ru[ru_id]->rf_map.chain=CC_id+chain_offset;
if (ru_id==0) sl_ahead = RC.ru[ru_id]->sl_ahead;
else AssertFatal(RC.ru[ru_id]->sl_ahead != RC.ru[0]->sl_ahead,"RU %d has different sl_ahead %d than RU 0 %d\n",ru_id,RC.ru[ru_id]->sl_ahead,RC.ru[0]->sl_ahead);
}
}
config_sync_var=0;
#ifdef E2_AGENT
//////////////////////////////////
//////////////////////////////////
//// Init the E2 Agent
// OAI Wrapper
e2_agent_args_t oai_args = RCconfig_NR_E2agent();
if (oai_args.enabled) {
initialize_agent(node_type, oai_args);
}
#endif // E2_AGENT
// wait for F1 Setup Response before starting L1 for real
if (NFAPI_MODE != NFAPI_MODE_PNF && (NODE_IS_DU(node_type) || NODE_IS_MONOLITHIC(node_type)))
wait_f1_setup_response();
if (RC.nb_RU > 0)
start_NR_RU();
#ifdef ENABLE_AERIAL
gNB_MAC_INST *nrmac = RC.nrmac[0];
nvIPC_Init(nrmac->nvipc_params_s);
#endif
for (int idx = 0; idx < RC.nb_nr_L1_inst; idx++)
RC.gNB[idx]->if_inst->sl_ahead = sl_ahead;
if (NFAPI_MODE==NFAPI_MODE_PNF) {
wait_nfapi_init("main?");
}
if (RC.nb_nr_L1_inst > 0) {
wait_RUs();
// once all RUs are ready initialize the rest of the gNBs ((dependence on final RU parameters after configuration)
if (IS_SOFTMODEM_DOSCOPE || IS_SOFTMODEM_IMSCOPE_ENABLED || IS_SOFTMODEM_IMSCOPE_RECORD_ENABLED) {
sleep(1);
scopeParms_t p;
p.argc = &argc;
p.argv = argv;
p.gNB = RC.gNB[0];
p.ru = RC.ru[0];
if (IS_SOFTMODEM_DOSCOPE) {
load_softscope("nr", &p);
}
if (IS_SOFTMODEM_IMSCOPE_ENABLED) {
load_softscope("im", &p);
}
AssertFatal(!(IS_SOFTMODEM_IMSCOPE_ENABLED && IS_SOFTMODEM_IMSCOPE_RECORD_ENABLED),
"Data recoding and ImScope cannot be enabled at the same time\n");
if (IS_SOFTMODEM_IMSCOPE_RECORD_ENABLED) {
load_module_shlib("imscope_record", NULL, 0, &p);
}
}
if (NFAPI_MODE != NFAPI_MODE_PNF && NFAPI_MODE != NFAPI_MODE_VNF && NFAPI_MODE != NFAPI_MODE_AERIAL) {
init_eNB_afterRU();
}
// connect the TX/RX buffers
pthread_mutex_lock(&sync_mutex);
sync_var=0;
pthread_cond_broadcast(&sync_cond);
pthread_mutex_unlock(&sync_mutex);
}
// wait for end of program
printf("TYPE <CTRL-C> TO TERMINATE\n");
// Sleep a while before checking all parameters have been used
// Some are used directly in external threads, asynchronously
sleep(2);
config_check_unknown_cmdlineopt(uniqCfg, CONFIG_CHECKALLSECTIONS);
itti_wait_tasks_end(NULL);
printf("Returned from ITTI signal handler\n");
if (RC.nb_nr_L1_inst > 0 || RC.nb_RU > 0)
stop_L1(0);
if (RC.nb_nr_macrlc_inst > 0) {
DevAssert(RC.nb_nr_macrlc_inst == 1);
mac_top_destroy_gNB(RC.nrmac[0]);
}
pthread_cond_destroy(&sync_cond);
pthread_mutex_destroy(&sync_mutex);
pthread_cond_destroy(&nfapi_sync_cond);
pthread_mutex_destroy(&nfapi_sync_mutex);
time_manager_finish();
free(pckg);
logClean();
printf("Bye.\n");
return 0;
}
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