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openairinterface5g/openair2/LAYER2/NR_MAC_gNB/main.c
T
Cedric Roux b9dffde03e adapt existing code to use NR RLC and NR PDCP values from configuration 
- remove hardcoded values
- adapt gNB RRC code
- adapt gNB MAC code
- adapt physical simulators, where we put the hardcoded values
  that were everywhere else before; if there is a need for those
  simulators to get configurable values, more work is needed
  (but it's doubtful that it is needed)
2025-06-05 09:18:48 +02:00

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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
*/
/*! \file main.c
* \brief top init of Layer 2
* \author Navid Nikaein and Raymond Knopp, WEI-TAI CHEN
* \date 2010 - 2014, 2018
* \version 1.0
* \company Eurecom, NTUST
* \email: navid.nikaein@eurecom.fr, kroempa@gmail.com
* @ingroup _mac
*/
#include <errno.h>
#include <inttypes.h>
#include <pthread.h>
#include <sched.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <unistd.h>
#include "NR_DRB-ToAddMod.h"
#include "NR_DRB-ToAddModList.h"
#include "NR_MAC_COMMON/nr_mac.h"
#include "NR_MAC_COMMON/nr_mac_common.h"
#include "NR_MAC_gNB/mac_proto.h"
#include "NR_MAC_gNB/mac_rrc_ul.h"
#include "NR_MAC_gNB/nr_mac_gNB.h"
#include "NR_PHY_INTERFACE/NR_IF_Module.h"
#include "NR_RLC-BearerConfig.h"
#include "NR_RadioBearerConfig.h"
#include "NR_ServingCellConfig.h"
#include "NR_ServingCellConfigCommon.h"
#include "NR_TAG.h"
#include "assertions.h"
#include "common/ngran_types.h"
#include "common/ran_context.h"
#include "common/utils/T/T.h"
#include "executables/softmodem-common.h"
#include "linear_alloc.h"
#include "nr_pdcp/nr_pdcp_entity.h"
#include "nr_pdcp/nr_pdcp_oai_api.h"
#include "nr_rlc/nr_rlc_oai_api.h"
#include "openair2/F1AP/f1ap_ids.h"
#include "seq_arr.h"
#include "system.h"
#include "time_meas.h"
#include "utils.h"
#define MACSTATSSTRLEN 36256
void *nrmac_stats_thread(void *arg) {
gNB_MAC_INST *gNB = (gNB_MAC_INST *)arg;
char output[MACSTATSSTRLEN] = {0};
const char *end = output + MACSTATSSTRLEN;
FILE *file = fopen("nrMAC_stats.log","w");
if (!file) {
LOG_W(NR_MAC, "Cannot open nrMAC_stats.log: %d, %s\n", errno, strerror(errno));
return NULL;
}
while (oai_exit == 0) {
char *p = output;
NR_SCHED_LOCK(&gNB->sched_lock);
p += dump_mac_stats(gNB, p, end - p, false);
NR_SCHED_UNLOCK(&gNB->sched_lock);
p += snprintf(p, end - p, "\n");
p += print_meas_log(&gNB->eNB_scheduler, "DL & UL scheduling timing", NULL, NULL, p, end - p);
p += print_meas_log(&gNB->schedule_dlsch, "dlsch scheduler", NULL, NULL, p, end - p);
p += print_meas_log(&gNB->rlc_data_req, "rlc_data_req", NULL, NULL, p, end - p);
p += print_meas_log(&gNB->rlc_status_ind, "rlc_status_ind", NULL, NULL, p, end - p);
p += print_meas_log(&gNB->nr_srs_ri_computation_timer, "UL-RI computation time", NULL, NULL, p, end - p);
p += print_meas_log(&gNB->nr_srs_tpmi_computation_timer, "UL-TPMI computation time", NULL, NULL, p, end - p);
fwrite(output, p - output, 1, file);
fflush(file);
sleep(1);
fseek(file,0,SEEK_SET);
}
fclose(file);
return NULL;
}
void clear_mac_stats(gNB_MAC_INST *gNB) {
UE_iterator(gNB->UE_info.connected_ue_list, UE) {
memset(&UE->mac_stats,0,sizeof(UE->mac_stats));
}
}
size_t dump_mac_stats(gNB_MAC_INST *gNB, char *output, size_t strlen, bool reset_rsrp)
{
const char *begin = output;
const char *end = output + strlen;
/* this function is called from gNB_dlsch_ulsch_scheduler(), so assumes the
* scheduler to be locked*/
NR_SCHED_ENSURE_LOCKED(&gNB->sched_lock);
NR_SCHED_LOCK(&gNB->UE_info.mutex);
UE_iterator(gNB->UE_info.connected_ue_list, UE) {
NR_UE_sched_ctrl_t *sched_ctrl = &UE->UE_sched_ctrl;
NR_mac_stats_t *stats = &UE->mac_stats;
const int avg_rsrp = stats->num_rsrp_meas > 0 ? stats->cumul_rsrp / stats->num_rsrp_meas : 0;
output += snprintf(output, end - output, "UE RNTI %04x CU-UE-ID ", UE->rnti);
if (du_exists_f1_ue_data(UE->rnti)) {
f1_ue_data_t ued = du_get_f1_ue_data(UE->rnti);
output += snprintf(output, end - output, "%d", ued.secondary_ue);
} else {
output += snprintf(output, end-output, "(none)");
}
bool in_sync = !sched_ctrl->ul_failure;
output += snprintf(output,
end - output,
" %s PH %d dB PCMAX %d dBm, average RSRP %d (%d meas)\n",
in_sync ? "in-sync" : "out-of-sync",
sched_ctrl->ph,
sched_ctrl->pcmax,
avg_rsrp,
stats->num_rsrp_meas);
if(sched_ctrl->CSI_report.cri_ri_li_pmi_cqi_report.print_report)
output += snprintf(output,
end - output,
"UE %04x: CQI %d, RI %d, PMI (%d,%d)\n",
UE->rnti,
sched_ctrl->CSI_report.cri_ri_li_pmi_cqi_report.wb_cqi_1tb,
sched_ctrl->CSI_report.cri_ri_li_pmi_cqi_report.ri+1,
sched_ctrl->CSI_report.cri_ri_li_pmi_cqi_report.pmi_x1,
sched_ctrl->CSI_report.cri_ri_li_pmi_cqi_report.pmi_x2);
if (stats->srs_stats[0] != '\0') {
output += snprintf(output, end - output, "UE %04x: %s\n", UE->rnti, stats->srs_stats);
}
output += snprintf(output,
end - output,
"UE %04x: dlsch_rounds ", UE->rnti);
output += snprintf(output, end - output, "%"PRIu64, stats->dl.rounds[0]);
for (int i = 1; i < gNB->dl_bler.harq_round_max; i++)
output += snprintf(output, end - output, "/%"PRIu64, stats->dl.rounds[i]);
output += snprintf(output,
end - output,
", dlsch_errors %"PRIu64", pucch0_DTX %d, BLER %.5f MCS (%d) %d\n",
stats->dl.errors,
stats->pucch0_DTX,
sched_ctrl->dl_bler_stats.bler,
UE->current_DL_BWP.mcsTableIdx,
sched_ctrl->dl_bler_stats.mcs);
if (reset_rsrp) {
stats->num_rsrp_meas = 0;
stats->cumul_rsrp = 0;
}
output += snprintf(output,
end - output,
"UE %04x: ulsch_rounds ", UE->rnti);
output += snprintf(output, end - output, "%"PRIu64, stats->ul.rounds[0]);
for (int i = 1; i < gNB->ul_bler.harq_round_max; i++)
output += snprintf(output, end - output, "/%"PRIu64, stats->ul.rounds[i]);
output += snprintf(output,
end - output,
", ulsch_errors %"PRIu64", ulsch_DTX %d, BLER %.5f MCS (%d) %d (Qm %d deltaMCS %d dB) NPRB %d SNR %d.%d dB\n",
stats->ul.errors,
stats->ulsch_DTX,
sched_ctrl->ul_bler_stats.bler,
UE->current_UL_BWP.mcs_table,
sched_ctrl->ul_bler_stats.mcs,
nr_get_Qm_ul(sched_ctrl->ul_bler_stats.mcs,UE->current_UL_BWP.mcs_table),
UE->mac_stats.deltaMCS,
UE->mac_stats.NPRB,
sched_ctrl->pusch_snrx10 / 10,
sched_ctrl->pusch_snrx10 % 10);
output += snprintf(output,
end - output,
"UE %04x: MAC: TX %14"PRIu64" RX %14"PRIu64" bytes\n",
UE->rnti, stats->dl.total_bytes, stats->ul.total_bytes);
for (int i = 0; i < seq_arr_size(&sched_ctrl->lc_config); i++) {
const nr_lc_config_t *c = seq_arr_at(&sched_ctrl->lc_config, i);
output += snprintf(output,
end - output,
"UE %04x: LCID %d: TX %14"PRIu64" RX %14"PRIu64" bytes\n",
UE->rnti,
c->lcid,
stats->dl.lc_bytes[c->lcid],
stats->ul.lc_bytes[c->lcid]);
}
}
NR_SCHED_UNLOCK(&gNB->UE_info.mutex);
return output - begin;
}
static void mac_rrc_init(gNB_MAC_INST *mac, ngran_node_t node_type)
{
switch (node_type) {
case ngran_gNB_CU:
AssertFatal(1 == 0, "nothing to do for CU\n");
break;
case ngran_gNB_DU:
mac_rrc_ul_f1ap_init(&mac->mac_rrc);
break;
case ngran_gNB:
mac_rrc_ul_direct_init(&mac->mac_rrc);
break;
default:
AssertFatal(0 == 1, "Unknown node type %d\n", node_type);
break;
}
}
void mac_top_init_gNB(ngran_node_t node_type,
NR_ServingCellConfigCommon_t *scc,
NR_ServingCellConfig_t *scd,
const nr_mac_config_t *config,
const nr_rlc_configuration_t *default_rlc_config)
{
module_id_t i;
gNB_MAC_INST *nrmac;
AssertFatal(RC.nb_nr_macrlc_inst == 1, "what is the point of calling %s() if you don't need exactly one MAC?\n", __func__);
if (RC.nb_nr_macrlc_inst > 0) {
RC.nrmac = (gNB_MAC_INST **) malloc16(RC.nb_nr_macrlc_inst *sizeof(gNB_MAC_INST *));
AssertFatal(RC.nrmac != NULL,"can't ALLOCATE %zu Bytes for %d gNB_MAC_INST with size %zu \n",
RC.nb_nr_macrlc_inst * sizeof(gNB_MAC_INST *),
RC.nb_nr_macrlc_inst, sizeof(gNB_MAC_INST));
for (i = 0; i < RC.nb_nr_macrlc_inst; i++) {
RC.nrmac[i] = (gNB_MAC_INST *) malloc16(sizeof(gNB_MAC_INST));
AssertFatal(RC.nrmac != NULL,"can't ALLOCATE %zu Bytes for %d gNB_MAC_INST with size %zu \n",
RC.nb_nr_macrlc_inst * sizeof(gNB_MAC_INST *),
RC.nb_nr_macrlc_inst, sizeof(gNB_MAC_INST));
LOG_D(MAC,"[MAIN] ALLOCATE %zu Bytes for %d gNB_MAC_INST @ %p\n",sizeof(gNB_MAC_INST), RC.nb_nr_macrlc_inst, RC.mac);
bzero(RC.nrmac[i], sizeof(gNB_MAC_INST));
RC.nrmac[i]->Mod_id = i;
RC.nrmac[i]->tag = (NR_TAG_t*)malloc(sizeof(NR_TAG_t));
memset((void*)RC.nrmac[i]->tag,0,sizeof(NR_TAG_t));
RC.nrmac[i]->ul_handle = 0;
RC.nrmac[i]->common_channels[0].ServingCellConfigCommon = scc;
RC.nrmac[i]->radio_config = *config;
RC.nrmac[i]->rlc_config = *default_rlc_config;
RC.nrmac[i]->common_channels[0].pre_ServingCellConfig = scd;
RC.nrmac[i]->first_MIB = true;
RC.nrmac[i]->num_scheduled_prach_rx = 0;
RC.nrmac[i]->common_channels[0].mib = get_new_MIB_NR(scc);
RC.nrmac[i]->cset0_bwp_start = 0;
RC.nrmac[i]->cset0_bwp_size = 0;
pthread_mutex_init(&RC.nrmac[i]->sched_lock, NULL);
pthread_mutex_init(&RC.nrmac[i]->UE_info.mutex, NULL);
uid_linear_allocator_init(&RC.nrmac[i]->UE_info.uid_allocator);
if (get_softmodem_params()->phy_test) {
RC.nrmac[i]->pre_processor_dl = nr_preprocessor_phytest;
RC.nrmac[i]->pre_processor_ul = nr_ul_preprocessor_phytest;
} else {
RC.nrmac[i]->pre_processor_dl = nr_init_dlsch_preprocessor(0);
RC.nrmac[i]->pre_processor_ul = nr_init_ulsch_preprocessor(0);
}
if (!IS_SOFTMODEM_NOSTATS)
threadCreate(&RC.nrmac[i]->stats_thread,
nrmac_stats_thread,
(void *)RC.nrmac[i],
"MAC_STATS",
-1,
sched_get_priority_min(SCHED_OAI) + 1);
mac_rrc_init(RC.nrmac[i], node_type);
}//END for (i = 0; i < RC.nb_nr_macrlc_inst; i++)
nr_rlc_op_mode_t mode = NODE_IS_MONOLITHIC(node_type) ? NR_RLC_OP_MODE_MONO_GNB : NR_RLC_OP_MODE_SPLIT_GNB;
int success = nr_rlc_module_init(mode);
AssertFatal(success == 0,"Could not initialize RLC layer\n");
// These should be out of here later
if (get_softmodem_params()->usim_test == 0 ) nr_pdcp_layer_init();
} else {
RC.nrmac = NULL;
}
// Initialize Linked-List for Active UEs
for (i = 0; i < RC.nb_nr_macrlc_inst; i++) {
nrmac = RC.nrmac[i];
nrmac->if_inst = NR_IF_Module_init(i);
memset(&nrmac->UE_info, 0, sizeof(nrmac->UE_info));
}
du_init_f1_ue_data();
srand48(0);
}
void mac_top_destroy_gNB(gNB_MAC_INST *mac)
{
NR_COMMON_channels_t *cc = &mac->common_channels[0];
ASN_STRUCT_FREE(asn_DEF_NR_BCCH_BCH_Message, cc->mib);
ASN_STRUCT_FREE(asn_DEF_NR_BCCH_DL_SCH_Message, cc->sib1);
ASN_STRUCT_FREE(asn_DEF_NR_ServingCellConfig, cc->pre_ServingCellConfig);
ASN_STRUCT_FREE(asn_DEF_NR_ServingCellConfigCommon, cc->ServingCellConfigCommon);
NR_UEs_t *UE_info = &mac->UE_info;
for (int i = 0; i < sizeofArray(UE_info->connected_ue_list); ++i)
if (UE_info->connected_ue_list[i])
delete_nr_ue_data(UE_info->connected_ue_list[i], cc, &UE_info->uid_allocator);
for (int i = 0; i < sizeofArray(UE_info->access_ue_list); ++i)
if (UE_info->access_ue_list[i])
delete_nr_ue_data(UE_info->access_ue_list[i], cc, &UE_info->uid_allocator);
}
void nr_mac_send_f1_setup_req(void)
{
gNB_MAC_INST *mac = RC.nrmac[0];
DevAssert(mac);
mac->mac_rrc.f1_setup_request(mac->f1_config.setup_req);
}
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