/*
* 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 1.0 (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 flexran_agent_mac.c
* \brief FlexRAN agent message handler for MAC layer
* \author Xenofon Foukas, Mohamed Kassem and Navid Nikaein
* \date 2016
* \version 0.1
*/
#include "flexran_agent_mac.h"
#include "flexran_agent_extern.h"
#include "flexran_agent_common.h"
#include "flexran_agent_mac_internal.h"
#include "flexran_agent_net_comm.h"
#include "flexran_agent_timer.h"
#include "flexran_agent_ran_api.h"
#include "LAYER2/MAC/proto.h"
#include "LAYER2/MAC/flexran_agent_mac_proto.h"
#include "LAYER2/MAC/flexran_agent_scheduler_dlsch_ue_remote.h"
#include "liblfds700.h"
#include "log.h"
/*Flags showing if a mac agent has already been registered*/
unsigned int mac_agent_registered[NUM_MAX_ENB];
/*Array containing the Agent-MAC interfaces*/
AGENT_MAC_xface *agent_mac_xface[NUM_MAX_ENB];
/* Ringbuffer related structs used for maintaining the dl mac config messages */
//message_queue_t *dl_mac_config_queue;
struct lfds700_misc_prng_state ps[NUM_MAX_ENB];
struct lfds700_ringbuffer_element *dl_mac_config_array[NUM_MAX_ENB];
struct lfds700_ringbuffer_state ringbuffer_state[NUM_MAX_ENB];
int flexran_agent_mac_stats_reply(mid_t mod_id,
const report_config_t *report_config,
Protocol__FlexUeStatsReport **ue_report,
Protocol__FlexCellStatsReport **cell_report) {
// Protocol__FlexHeader *header;
int i, j, k;
// int cc_id = 0;
int enb_id = mod_id;
/* Allocate memory for list of UE reports */
if (report_config->nr_ue > 0) {
for (i = 0; i < report_config->nr_ue; i++) {
/* Check flag for creation of buffer status report */
if (report_config->ue_report_type[i].ue_report_flags & PROTOCOL__FLEX_UE_STATS_TYPE__FLUST_BSR) {
//TODO should be automated
ue_report[i]->n_bsr = 4;
uint32_t *elem;
elem = (uint32_t *) malloc(sizeof(uint32_t)*ue_report[i]->n_bsr);
if (elem == NULL)
goto error;
for (j = 0; j < ue_report[i]->n_bsr; j++) {
// NN: we need to know the cc_id here, consider the first one
elem[j] = flexran_get_ue_bsr (enb_id, i, j);
}
ue_report[i]->bsr = elem;
}
/* Check flag for creation of PHR report */
if (report_config->ue_report_type[i].ue_report_flags & PROTOCOL__FLEX_UE_STATS_TYPE__FLUST_PHR) {
ue_report[i]->phr = flexran_get_ue_phr (enb_id, i); // eNB_UE_list->UE_template[UE_PCCID(enb_id,i)][i].phr_info;
ue_report[i]->has_phr = 1;
}
/* Check flag for creation of RLC buffer status report */
if (report_config->ue_report_type[i].ue_report_flags & PROTOCOL__FLEX_UE_STATS_TYPE__FLUST_RLC_BS) {
ue_report[i]->n_rlc_report = 3; // Set this to the number of LCs for this UE. This needs to be generalized for for LCs
Protocol__FlexRlcBsr ** rlc_reports;
rlc_reports = malloc(sizeof(Protocol__FlexRlcBsr *) * ue_report[i]->n_rlc_report);
if (rlc_reports == NULL)
goto error;
// NN: see LAYER2/openair2_proc.c for rlc status
for (j = 0; j < ue_report[i]->n_rlc_report; j++) {
rlc_reports[j] = malloc(sizeof(Protocol__FlexRlcBsr));
if (rlc_reports[j] == NULL)
goto error;
protocol__flex_rlc_bsr__init(rlc_reports[j]);
rlc_reports[j]->lc_id = j+1;
rlc_reports[j]->has_lc_id = 1;
rlc_reports[j]->tx_queue_size = flexran_get_tx_queue_size(enb_id, i, j + 1);
rlc_reports[j]->has_tx_queue_size = 1;
//TODO:Set tx queue head of line delay in ms
rlc_reports[j]->tx_queue_hol_delay = flexran_get_hol_delay(enb_id, i, j + 1);
rlc_reports[j]->has_tx_queue_hol_delay = 1;
//TODO:Set retransmission queue size in bytes
rlc_reports[j]->retransmission_queue_size = 10;
rlc_reports[j]->has_retransmission_queue_size = 0;
//TODO:Set retransmission queue head of line delay in ms
rlc_reports[j]->retransmission_queue_hol_delay = 100;
rlc_reports[j]->has_retransmission_queue_hol_delay = 0;
//TODO DONE:Set current size of the pending message in bytes
rlc_reports[j]->status_pdu_size = flexran_get_tx_queue_size(enb_id, i, j + 1);
rlc_reports[j]->has_status_pdu_size = 1;
}
// Add RLC buffer status reports to the full report
if (ue_report[i]->n_rlc_report > 0)
ue_report[i]->rlc_report = rlc_reports;
}
/* Check flag for creation of MAC CE buffer status report */
if (report_config->ue_report_type[i].ue_report_flags & PROTOCOL__FLEX_UE_STATS_TYPE__FLUST_MAC_CE_BS) {
// TODO: Fill in the actual MAC CE buffer status report
ue_report[i]->pending_mac_ces = (flexran_get_MAC_CE_bitmap_TA(enb_id,i,0) | (0 << 1) | (0 << 2) | (0 << 3)) & 15;
// Use as bitmap. Set one or more of the; /* Use as bitmap. Set one or more of the
// PROTOCOL__FLEX_CE_TYPE__FLPCET_ values
// found in stats_common.pb-c.h. See
// flex_ce_type in FlexRAN specification
ue_report[i]->has_pending_mac_ces = 1;
}
/* Check flag for creation of DL CQI report */
if (report_config->ue_report_type[i].ue_report_flags & PROTOCOL__FLEX_UE_STATS_TYPE__FLUST_DL_CQI) {
// TODO: Fill in the actual DL CQI report for the UE based on its configuration
Protocol__FlexDlCqiReport * dl_report;
dl_report = malloc(sizeof(Protocol__FlexDlCqiReport));
if (dl_report == NULL)
goto error;
protocol__flex_dl_cqi_report__init(dl_report);
dl_report->sfn_sn = flexran_get_sfn_sf(enb_id);
dl_report->has_sfn_sn = 1;
//Set the number of DL CQI reports for this UE. One for each CC
dl_report->n_csi_report = flexran_get_active_CC(enb_id,i);
dl_report->n_csi_report = 1 ;
//Create the actual CSI reports.
Protocol__FlexDlCsi **csi_reports;
csi_reports = malloc(sizeof(Protocol__FlexDlCsi *)*dl_report->n_csi_report);
if (csi_reports == NULL)
goto error;
for (j = 0; j < dl_report->n_csi_report; j++) {
csi_reports[j] = malloc(sizeof(Protocol__FlexDlCsi));
if (csi_reports[j] == NULL)
goto error;
protocol__flex_dl_csi__init(csi_reports[j]);
//The servCellIndex for this report
csi_reports[j]->serv_cell_index = j;
csi_reports[j]->has_serv_cell_index = 1;
//The rank indicator value for this cc
csi_reports[j]->ri = flexran_get_current_RI(enb_id,i,j);
csi_reports[j]->has_ri = 1;
//TODO: the type of CSI report based on the configuration of the UE
//For now we only support type P10, which only needs a wideband value
//The full set of types can be found in stats_common.pb-c.h and
//in the FlexRAN specifications
csi_reports[j]->type = PROTOCOL__FLEX_CSI_TYPE__FLCSIT_P10;
csi_reports[j]->has_type = 1;
csi_reports[j]->report_case = PROTOCOL__FLEX_DL_CSI__REPORT_P10CSI;
if(csi_reports[j]->report_case == PROTOCOL__FLEX_DL_CSI__REPORT_P10CSI){
Protocol__FlexCsiP10 *csi10;
csi10 = malloc(sizeof(Protocol__FlexCsiP10));
if (csi10 == NULL)
goto error;
protocol__flex_csi_p10__init(csi10);
//TODO: set the wideband value
// NN: this is also depends on cc_id
csi10->wb_cqi = flexran_get_ue_wcqi (enb_id, i); //eNB_UE_list->eNB_UE_stats[UE_PCCID(enb_id,i)][i].dl_cqi;
csi10->has_wb_cqi = 1;
//Add the type of measurements to the csi report in the proper union type
csi_reports[j]->p10csi = csi10;
}
else if(csi_reports[j]->report_case == PROTOCOL__FLEX_DL_CSI__REPORT_P11CSI){
Protocol__FlexCsiP11 *csi11;
csi11 = malloc(sizeof(Protocol__FlexCsiP11));
if (csi11 == NULL)
goto error;
protocol__flex_csi_p11__init(csi11);
csi11->wb_cqi = malloc(sizeof(csi11->wb_cqi));
csi11->n_wb_cqi = 1;
csi11->wb_cqi[0] = flexran_get_ue_wcqi (enb_id, i);
// According To spec 36.213
if (flexran_get_antenna_ports(enb_id, j) == 2 && csi_reports[j]->ri == 1) {
// TODO PMI
csi11->wb_pmi = flexran_get_ue_pmi(enb_id);
csi11->has_wb_pmi = 1;
}
else if (flexran_get_antenna_ports(enb_id, j) == 2 && csi_reports[j]->ri == 2){
// TODO PMI
csi11->wb_pmi = flexran_get_ue_pmi(enb_id);
csi11->has_wb_pmi = 1;
}
else if (flexran_get_antenna_ports(enb_id, j) == 4 && csi_reports[j]->ri == 2){
// TODO PMI
csi11->wb_pmi = flexran_get_ue_pmi(enb_id);
csi11->has_wb_pmi = 1;
}
csi11->has_wb_pmi = 0;
csi_reports[j]->p11csi = csi11;
}
else if(csi_reports[j]->report_case == PROTOCOL__FLEX_DL_CSI__REPORT_P20CSI){
Protocol__FlexCsiP20 *csi20;
csi20 = malloc(sizeof(Protocol__FlexCsiP20));
if (csi20 == NULL)
goto error;
protocol__flex_csi_p20__init(csi20);
csi20->wb_cqi = flexran_get_ue_wcqi (enb_id, i);
csi20->has_wb_cqi = 1;
csi20->bandwidth_part_index = 1 ;//TODO
csi20->has_bandwidth_part_index = 1;
csi20->sb_index = 1 ;//TODO
csi20->has_sb_index = 1 ;
csi_reports[j]->p20csi = csi20;
}
else if(csi_reports[j]->report_case == PROTOCOL__FLEX_DL_CSI__REPORT_P21CSI){
// Protocol__FlexCsiP21 *csi21;
// csi21 = malloc(sizeof(Protocol__FlexCsiP21));
// if (csi21 == NULL)
// goto error;
// protocol__flex_csi_p21__init(csi21);
// csi21->wb_cqi = flexran_get_ue_wcqi (enb_id, i);
// csi21->wb_pmi = flexran_get_ue_pmi(enb_id); //TDO inside
// csi21->has_wb_pmi = 1;
// csi21->sb_cqi = 1; // TODO
// csi21->bandwidth_part_index = 1 ; //TDO inside
// csi21->has_bandwidth_part_index = 1 ;
// csi21->sb_index = 1 ;//TODO
// csi21->has_sb_index = 1 ;
// csi_reports[j]->p20csi = csi21;
}
else if(csi_reports[j]->report_case == PROTOCOL__FLEX_DL_CSI__REPORT_A12CSI){
// Protocol__FlexCsiA12 *csi12;
// csi12 = malloc(sizeof(Protocol__FlexCsiA12));
// if (csi12 == NULL)
// goto error;
// protocol__flex_csi_a12__init(csi12);
// csi12->wb_cqi = flexran_get_ue_wcqi (enb_id, i);
// csi12->sb_pmi = 1 ; //TODO inside
// TODO continou
}
else if(csi_reports[j]->report_case == PROTOCOL__FLEX_DL_CSI__REPORT_A22CSI){
// Protocol__FlexCsiA22 *csi22;
// csi22 = malloc(sizeof(Protocol__FlexCsiA22));
// if (csi22 == NULL)
// goto error;
// protocol__flex_csi_a22__init(csi22);
// csi22->wb_cqi = flexran_get_ue_wcqi (enb_id, i);
// csi22->sb_cqi = 1 ; //TODO inside
// csi22->wb_pmi = flexran_get_ue_wcqi (enb_id, i);
// csi22->has_wb_pmi = 1;
// csi22->sb_pmi = 1 ; //TODO inside
// csi22->has_wb_pmi = 1;
// csi22->sb_list = flexran_get_ue_wcqi (enb_id, i);
}
else if(csi_reports[j]->report_case == PROTOCOL__FLEX_DL_CSI__REPORT_A20CSI){
// Protocol__FlexCsiA20 *csi20;
// csi20 = malloc(sizeof(Protocol__FlexCsiA20));
// if (csi20 == NULL)
// goto error;
// protocol__flex_csi_a20__init(csi20);
// csi20->wb_cqi = flexran_get_ue_wcqi (enb_id, i);
// csi20->has_wb_cqi = 1;
// csi20>sb_cqi = 1 ; //TODO inside
// csi20>has_sb_cqi = 1 ;
// csi20->sb_list = 1; // TODO inside
}
else if(csi_reports[j]->report_case == PROTOCOL__FLEX_DL_CSI__REPORT_A30CSI){
}
else if(csi_reports[j]->report_case == PROTOCOL__FLEX_DL_CSI__REPORT_A31CSI){
}
}
//Add the csi reports to the full DL CQI report
dl_report->csi_report = csi_reports;
//Add the DL CQI report to the stats report
ue_report[i]->dl_cqi_report = dl_report;
}
/* Check flag for creation of paging buffer status report */
if (report_config->ue_report_type[i].ue_report_flags & PROTOCOL__FLEX_UE_STATS_TYPE__FLUST_PBS) {
//TODO: Fill in the actual paging buffer status report. For this field to be valid, the RNTI
//set in the report must be a P-RNTI
Protocol__FlexPagingBufferReport *paging_report;
paging_report = malloc(sizeof(Protocol__FlexPagingBufferReport));
if (paging_report == NULL)
goto error;
protocol__flex_paging_buffer_report__init(paging_report);
//Set the number of pending paging messages
paging_report->n_paging_info = 1;
//Provide a report for each pending paging message
Protocol__FlexPagingInfo **p_info;
p_info = malloc(sizeof(Protocol__FlexPagingInfo *) * paging_report->n_paging_info);
if (p_info == NULL)
goto error;
for (j = 0; j < paging_report->n_paging_info; j++) {
p_info[j] = malloc(sizeof(Protocol__FlexPagingInfo));
if(p_info[j] == NULL)
goto error;
protocol__flex_paging_info__init(p_info[j]);
//TODO: Set paging index. This index is the same that will be used for the scheduling of the
//paging message by the controller
p_info[j]->paging_index = 10;
p_info[j]->has_paging_index = 1;
//TODO:Set the paging message size
p_info[j]->paging_message_size = 100;
p_info[j]->has_paging_message_size = 1;
//TODO: Set the paging subframe
p_info[j]->paging_subframe = 10;
p_info[j]->has_paging_subframe = 1;
//TODO: Set the carrier index for the pending paging message
p_info[j]->carrier_index = 0;
p_info[j]->has_carrier_index = 1;
}
//Add all paging info to the paging buffer rerport
paging_report->paging_info = p_info;
//Add the paging report to the UE report
ue_report[i]->pbr = paging_report;
}
/* Check flag for creation of UL CQI report */
if (report_config->ue_report_type[i].ue_report_flags & PROTOCOL__FLEX_UE_STATS_TYPE__FLUST_UL_CQI) {
//Fill in the full UL CQI report of the UE
Protocol__FlexUlCqiReport *full_ul_report;
full_ul_report = malloc(sizeof(Protocol__FlexUlCqiReport));
if(full_ul_report == NULL)
goto error;
protocol__flex_ul_cqi_report__init(full_ul_report);
//TODO:Set the SFN and SF of the generated report
full_ul_report->sfn_sn = flexran_get_sfn_sf(enb_id);
full_ul_report->has_sfn_sn = 1;
//TODO:Set the number of UL measurement reports based on the types of measurements
//configured for this UE and on the servCellIndex
full_ul_report->n_cqi_meas = 1;
Protocol__FlexUlCqi **ul_report;
ul_report = malloc(sizeof(Protocol__FlexUlCqi *) * full_ul_report->n_cqi_meas);
if(ul_report == NULL)
goto error;
//Fill each UL report of the UE for each of the configured report types
for(j = 0; j < full_ul_report->n_cqi_meas; j++) {
ul_report[j] = malloc(sizeof(Protocol__FlexUlCqi));
if(ul_report[j] == NULL)
goto error;
protocol__flex_ul_cqi__init(ul_report[j]);
//TODO: Set the type of the UL report. As an example set it to SRS UL report
// See enum flex_ul_cqi_type in FlexRAN specification for more details
ul_report[j]->type = PROTOCOL__FLEX_UL_CQI_TYPE__FLUCT_SRS;
ul_report[j]->has_type = 1;
//TODO:Set the number of SINR measurements based on the report type
//See struct flex_ul_cqi in FlexRAN specification for more details
ul_report[j]->n_sinr = 0;
uint32_t *sinr_meas;
sinr_meas = (uint32_t *) malloc(sizeof(uint32_t) * ul_report[j]->n_sinr);
if (sinr_meas == NULL)
goto error;
//TODO:Set the SINR measurements for the specified type
for (k = 0; k < ul_report[j]->n_sinr; k++) {
sinr_meas[k] = 10;
}
ul_report[j]->sinr = sinr_meas;
//TODO: Set the servCellIndex for this report
ul_report[j]->serv_cell_index = 0;
ul_report[j]->has_serv_cell_index = 1;
//Set the list of UL reports of this UE to the full UL report
full_ul_report->cqi_meas = ul_report;
full_ul_report->n_pucch_dbm = MAX_NUM_CCs;
full_ul_report->pucch_dbm = malloc(sizeof(Protocol__FlexPucchDbm *) * full_ul_report->n_pucch_dbm);
for (j = 0; j < MAX_NUM_CCs; j++) {
full_ul_report->pucch_dbm[j] = malloc(sizeof(Protocol__FlexPucchDbm));
protocol__flex_pucch_dbm__init(full_ul_report->pucch_dbm[j]);
full_ul_report->pucch_dbm[j]->has_serv_cell_index = 1;
full_ul_report->pucch_dbm[j]->serv_cell_index = j;
if(flexran_get_p0_pucch_dbm(enb_id,i, j) != -1){
full_ul_report->pucch_dbm[j]->p0_pucch_dbm = flexran_get_p0_pucch_dbm(enb_id,i,j);
full_ul_report->pucch_dbm[j]->has_p0_pucch_dbm = 1;
}
}
}
// Add full UL CQI report to the UE report
ue_report[i]->ul_cqi_report = full_ul_report;
}
}
}
/* Allocate memory for list of cell reports */
if (report_config->nr_cc > 0) {
// Fill in the Cell reports
for (i = 0; i < report_config->nr_cc; i++) {
/* Check flag for creation of noise and interference report */
if(report_config->cc_report_type[i].cc_report_flags & PROTOCOL__FLEX_CELL_STATS_TYPE__FLCST_NOISE_INTERFERENCE) {
// TODO: Fill in the actual noise and interference report for this cell
Protocol__FlexNoiseInterferenceReport *ni_report;
ni_report = malloc(sizeof(Protocol__FlexNoiseInterferenceReport));
if(ni_report == NULL)
goto error;
protocol__flex_noise_interference_report__init(ni_report);
// Current frame and subframe number
ni_report->sfn_sf = flexran_get_sfn_sf(enb_id);
ni_report->has_sfn_sf = 1;
//TODO:Received interference power in dbm
ni_report->rip = 0;
ni_report->has_rip = 1;
//TODO:Thermal noise power in dbm
ni_report->tnp = 0;
ni_report->has_tnp = 1;
ni_report->p0_nominal_pucch = flexran_get_p0_nominal_pucch(enb_id, 0);
ni_report->has_p0_nominal_pucch = 1;
cell_report[i]->noise_inter_report = ni_report;
}
}
}
return 0;
error:
if (cell_report != NULL)
free(cell_report);
if (ue_report != NULL)
free(ue_report);
return -1;
}
int flexran_agent_mac_destroy_stats_reply(Protocol__FlexranMessage *msg) {
//TODO: Need to deallocate memory for the stats reply message
if(msg->msg_case != PROTOCOL__FLEXRAN_MESSAGE__MSG_STATS_REPLY_MSG)
goto error;
free(msg->stats_reply_msg->header);
int i, j, k;
Protocol__FlexStatsReply *reply = msg->stats_reply_msg;
Protocol__FlexDlCqiReport *dl_report;
Protocol__FlexUlCqiReport *ul_report;
Protocol__FlexPagingBufferReport *paging_report;
// Free the memory for the UE reports
for (i = 0; i < reply->n_ue_report; i++) {
free(reply->ue_report[i]->bsr);
for (j = 0; j < reply->ue_report[i]->n_rlc_report; j++) {
free(reply->ue_report[i]->rlc_report[j]);
}
free(reply->ue_report[i]->rlc_report);
// If DL CQI report flag was set
if (reply->ue_report[i]->flags & PROTOCOL__FLEX_UE_STATS_TYPE__FLUST_DL_CQI) {
dl_report = reply->ue_report[i]->dl_cqi_report;
// Delete all CSI reports
for (j = 0; j < dl_report->n_csi_report; j++) {
//Must free memory based on the type of report
switch(dl_report->csi_report[j]->report_case) {
case PROTOCOL__FLEX_DL_CSI__REPORT_P10CSI:
free(dl_report->csi_report[j]->p10csi);
break;
case PROTOCOL__FLEX_DL_CSI__REPORT_P11CSI:
free(dl_report->csi_report[j]->p11csi->wb_cqi);
free(dl_report->csi_report[j]->p11csi);
break;
case PROTOCOL__FLEX_DL_CSI__REPORT_P20CSI:
free(dl_report->csi_report[j]->p20csi);
break;
case PROTOCOL__FLEX_DL_CSI__REPORT_P21CSI:
free(dl_report->csi_report[j]->p21csi->wb_cqi);
free(dl_report->csi_report[j]->p21csi->sb_cqi);
free(dl_report->csi_report[j]->p21csi);
break;
case PROTOCOL__FLEX_DL_CSI__REPORT_A12CSI:
free(dl_report->csi_report[j]->a12csi->wb_cqi);
free(dl_report->csi_report[j]->a12csi->sb_pmi);
free(dl_report->csi_report[j]->a12csi);
break;
case PROTOCOL__FLEX_DL_CSI__REPORT_A22CSI:
free(dl_report->csi_report[j]->a22csi->wb_cqi);
free(dl_report->csi_report[j]->a22csi->sb_cqi);
free(dl_report->csi_report[j]->a22csi->sb_list);
free(dl_report->csi_report[j]->a22csi);
break;
case PROTOCOL__FLEX_DL_CSI__REPORT_A20CSI:
free(dl_report->csi_report[j]->a20csi->sb_list);
free(dl_report->csi_report[j]->a20csi);
break;
case PROTOCOL__FLEX_DL_CSI__REPORT_A30CSI:
free(dl_report->csi_report[j]->a30csi->sb_cqi);
free(dl_report->csi_report[j]->a30csi);
break;
case PROTOCOL__FLEX_DL_CSI__REPORT_A31CSI:
free(dl_report->csi_report[j]->a31csi->wb_cqi);
for (k = 0; k < dl_report->csi_report[j]->a31csi->n_sb_cqi; k++) {
free(dl_report->csi_report[j]->a31csi->sb_cqi[k]);
}
free(dl_report->csi_report[j]->a31csi->sb_cqi);
break;
default:
break;
}
free(dl_report->csi_report[j]);
}
free(dl_report->csi_report);
free(dl_report);
}
// If Paging buffer report flag was set
if (reply->ue_report[i]->flags & PROTOCOL__FLEX_UE_STATS_TYPE__FLUST_PBS) {
paging_report = reply->ue_report[i]->pbr;
// Delete all paging buffer reports
for (j = 0; j < paging_report->n_paging_info; j++) {
free(paging_report->paging_info[j]);
}
free(paging_report->paging_info);
free(paging_report);
}
// If UL CQI report flag was set
if (reply->ue_report[i]->flags & PROTOCOL__FLEX_UE_STATS_TYPE__FLUST_UL_CQI) {
ul_report = reply->ue_report[i]->ul_cqi_report;
for (j = 0; j < ul_report->n_cqi_meas; j++) {
free(ul_report->cqi_meas[j]->sinr);
free(ul_report->cqi_meas[j]);
}
free(ul_report->cqi_meas);
for (j = 0; j < ul_report->n_pucch_dbm; j++) {
free(ul_report->pucch_dbm[j]);
}
free(ul_report->pucch_dbm);
}
free(reply->ue_report[i]);
}
free(reply->ue_report);
// Free memory for all Cell reports
for (i = 0; i < reply->n_cell_report; i++) {
free(reply->cell_report[i]->noise_inter_report);
free(reply->cell_report[i]);
}
free(reply->cell_report);
free(reply);
free(msg);
return 0;
error:
//LOG_E(MAC, "%s: an error occured\n", __FUNCTION__);
return -1;
}
int flexran_agent_mac_sr_info(mid_t mod_id, const void *params, Protocol__FlexranMessage **msg) {
Protocol__FlexHeader *header;
int i;
const int xid = *((int *)params);
Protocol__FlexUlSrInfo *ul_sr_info_msg;
ul_sr_info_msg = malloc(sizeof(Protocol__FlexUlSrInfo));
if (ul_sr_info_msg == NULL) {
goto error;
}
protocol__flex_ul_sr_info__init(ul_sr_info_msg);
if (flexran_create_header(xid, PROTOCOL__FLEX_TYPE__FLPT_UL_SR_INFO, &header) != 0)
goto error;
ul_sr_info_msg->header = header;
ul_sr_info_msg->has_sfn_sf = 1;
ul_sr_info_msg->sfn_sf = flexran_get_sfn_sf(mod_id);
/*TODO: Set the number of UEs that sent an SR */
ul_sr_info_msg->n_rnti = 1;
ul_sr_info_msg->rnti = (uint32_t *) malloc(ul_sr_info_msg->n_rnti * sizeof(uint32_t));
if(ul_sr_info_msg->rnti == NULL) {
goto error;
}
/*TODO:Set the rnti of the UEs that sent an SR */
for (i = 0; i < ul_sr_info_msg->n_rnti; i++) {
ul_sr_info_msg->rnti[i] = 1;
}
*msg = malloc(sizeof(Protocol__FlexranMessage));
if(*msg == NULL)
goto error;
protocol__flexran_message__init(*msg);
(*msg)->msg_case = PROTOCOL__FLEXRAN_MESSAGE__MSG_UL_SR_INFO_MSG;
(*msg)->msg_dir = PROTOCOL__FLEXRAN_DIRECTION__INITIATING_MESSAGE;
(*msg)->ul_sr_info_msg = ul_sr_info_msg;
return 0;
error:
// TODO: Need to make proper error handling
if (header != NULL)
free(header);
if (ul_sr_info_msg != NULL) {
free(ul_sr_info_msg->rnti);
free(ul_sr_info_msg);
}
if(*msg != NULL)
free(*msg);
//LOG_E(MAC, "%s: an error occured\n", __FUNCTION__);
return -1;
}
int flexran_agent_mac_destroy_sr_info(Protocol__FlexranMessage *msg) {
if(msg->msg_case != PROTOCOL__FLEXRAN_MESSAGE__MSG_UL_SR_INFO_MSG)
goto error;
free(msg->ul_sr_info_msg->header);
free(msg->ul_sr_info_msg->rnti);
free(msg->ul_sr_info_msg);
free(msg);
return 0;
error:
//LOG_E(MAC, "%s: an error occured\n", __FUNCTION__);
return -1;
}
int flexran_agent_mac_sf_trigger(mid_t mod_id, const void *params, Protocol__FlexranMessage **msg) {
Protocol__FlexHeader *header;
int i, j, UE_id;
int available_harq[NUMBER_OF_UE_MAX];
const int xid = *((int *)params);
Protocol__FlexSfTrigger *sf_trigger_msg;
sf_trigger_msg = malloc(sizeof(Protocol__FlexSfTrigger));
if (sf_trigger_msg == NULL) {
goto error;
}
protocol__flex_sf_trigger__init(sf_trigger_msg);
if (flexran_create_header(xid, PROTOCOL__FLEX_TYPE__FLPT_SF_TRIGGER, &header) != 0)
goto error;
frame_t frame;
sub_frame_t subframe;
for (i = 0; i < NUMBER_OF_UE_MAX; i++) {
available_harq[i] = -1;
}
int ahead_of_time = 0;
frame = (frame_t) flexran_get_current_system_frame_num(mod_id);
subframe = (sub_frame_t) flexran_get_current_subframe(mod_id);
subframe = ((subframe + ahead_of_time) % 10);
if (subframe < flexran_get_current_subframe(mod_id)) {
frame = (frame + 1) % 1024;
}
int additional_frames = ahead_of_time / 10;
frame = (frame + additional_frames) % 1024;
sf_trigger_msg->header = header;
sf_trigger_msg->has_sfn_sf = 1;
sf_trigger_msg->sfn_sf = flexran_get_future_sfn_sf(mod_id, 3);
sf_trigger_msg->n_dl_info = 0;
for (i = 0; i < NUMBER_OF_UE_MAX; i++) {
for (j = 0; j < 8; j++) {
if (harq_pid_updated[i][j] == 1) {
available_harq[i] = j;
sf_trigger_msg->n_dl_info++;
break;
}
}
}
// LOG_I(FLEXRAN_AGENT, "Sending subframe trigger for frame %d and subframe %d\n", flexran_get_current_frame(mod_id), (flexran_get_current_subframe(mod_id) + 1) % 10);
/*TODO: Fill in the number of dl HARQ related info, based on the number of currently
*transmitting UEs
*/
// sf_trigger_msg->n_dl_info = flexran_get_num_ues(mod_id);
Protocol__FlexDlInfo **dl_info = NULL;
if (sf_trigger_msg->n_dl_info > 0) {
dl_info = malloc(sizeof(Protocol__FlexDlInfo *) * sf_trigger_msg->n_dl_info);
if(dl_info == NULL)
goto error;
i = -1;
//Fill the status of the current HARQ process for each UE
for(UE_id = 0; UE_id < NUMBER_OF_UE_MAX; UE_id++) {
if (available_harq[UE_id] < 0) {
continue;
} else {
i++;
}
dl_info[i] = malloc(sizeof(Protocol__FlexDlInfo));
if(dl_info[i] == NULL)
goto error;
protocol__flex_dl_info__init(dl_info[i]);
dl_info[i]->rnti = flexran_get_ue_crnti(mod_id, UE_id);
dl_info[i]->has_rnti = 1;
/*Fill in the right id of this round's HARQ process for this UE*/
// uint8_t harq_id;
//uint8_t harq_status;
// flexran_get_harq(mod_id, UE_PCCID(mod_id,i), i, frame, subframe, &harq_id, &harq_status);
dl_info[i]->harq_process_id = available_harq[UE_id];
harq_pid_updated[UE_id][available_harq[UE_id]] = 0;
dl_info[i]->has_harq_process_id = 1;
/* Fill in the status of the HARQ process (2 TBs)*/
dl_info[i]->n_harq_status = 2;
dl_info[i]->harq_status = malloc(sizeof(uint32_t) * dl_info[i]->n_harq_status);
for (j = 0; j < dl_info[i]->n_harq_status; j++) {
dl_info[i]->harq_status[j] = harq_pid_round[UE_id][available_harq[UE_id]];
// TODO: This should be different per TB
}
// LOG_I(FLEXRAN_AGENT, "Sending subframe trigger for frame %d and subframe %d and harq %d (round %d)\n", flexran_get_current_frame(mod_id), (flexran_get_current_subframe(mod_id) + 1) % 10, dl_info[i]->harq_process_id, dl_info[i]->harq_status[0]);
if(dl_info[i]->harq_status[0] > 0) {
// LOG_I(FLEXRAN_AGENT, "[Frame %d][Subframe %d]Need to make a retransmission for harq %d (round %d)\n", flexran_get_current_frame(mod_id), flexran_get_current_subframe(mod_id), dl_info[i]->harq_process_id, dl_info[i]->harq_status[0]);
}
/*Fill in the serving cell index for this UE */
dl_info[i]->serv_cell_index = UE_PCCID(mod_id,i);
dl_info[i]->has_serv_cell_index = 1;
}
}
sf_trigger_msg->dl_info = dl_info;
/* Fill in the number of UL reception status related info, based on the number of currently
* transmitting UEs
*/
sf_trigger_msg->n_ul_info = flexran_get_num_ues(mod_id);
Protocol__FlexUlInfo **ul_info = NULL;
if (sf_trigger_msg->n_ul_info > 0) {
ul_info = malloc(sizeof(Protocol__FlexUlInfo *) * sf_trigger_msg->n_ul_info);
if(ul_info == NULL)
goto error;
//Fill the reception info for each transmitting UE
for(i = 0; i < sf_trigger_msg->n_ul_info; i++) {
ul_info[i] = malloc(sizeof(Protocol__FlexUlInfo));
if(ul_info[i] == NULL)
goto error;
protocol__flex_ul_info__init(ul_info[i]);
ul_info[i]->rnti = flexran_get_ue_crnti(mod_id, i);
ul_info[i]->has_rnti = 1;
/*Fill in the Tx power control command for this UE (if available)*/
if(flexran_get_tpc(mod_id,i) != 1){
ul_info[i]->tpc = flexran_get_tpc(mod_id,i);
ul_info[i]->has_tpc = 1;
}
else{
ul_info[i]->tpc = flexran_get_tpc(mod_id,i);
ul_info[i]->has_tpc = 0;
}
/*TODO: fill in the amount of data in bytes in the MAC SDU received in this subframe for the
given logical channel*/
ul_info[i]->n_ul_reception = 0;
ul_info[i]->ul_reception = malloc(sizeof(uint32_t) * ul_info[i]->n_ul_reception);
for (j = 0; j < ul_info[i]->n_ul_reception; j++) {
ul_info[i]->ul_reception[j] = 100;
}
/*TODO: Fill in the reception status for each UEs data*/
ul_info[i]->reception_status = PROTOCOL__FLEX_RECEPTION_STATUS__FLRS_OK;
ul_info[i]->has_reception_status = 1;
/*Fill in the serving cell index for this UE */
ul_info[i]->serv_cell_index = UE_PCCID(mod_id,i);
ul_info[i]->has_serv_cell_index = 1;
}
}
sf_trigger_msg->ul_info = ul_info;
*msg = malloc(sizeof(Protocol__FlexranMessage));
if(*msg == NULL)
goto error;
protocol__flexran_message__init(*msg);
(*msg)->msg_case = PROTOCOL__FLEXRAN_MESSAGE__MSG_SF_TRIGGER_MSG;
(*msg)->msg_dir = PROTOCOL__FLEXRAN_DIRECTION__INITIATING_MESSAGE;
(*msg)->sf_trigger_msg = sf_trigger_msg;
return 0;
error:
if (header != NULL)
free(header);
if (sf_trigger_msg != NULL) {
for (i = 0; i < sf_trigger_msg->n_dl_info; i++) {
free(sf_trigger_msg->dl_info[i]->harq_status);
}
free(sf_trigger_msg->dl_info);
free(sf_trigger_msg->ul_info);
free(sf_trigger_msg);
}
if(*msg != NULL)
free(*msg);
//LOG_E(MAC, "%s: an error occured\n", __FUNCTION__);
return -1;
}
int flexran_agent_mac_destroy_sf_trigger(Protocol__FlexranMessage *msg) {
int i;
if(msg->msg_case != PROTOCOL__FLEXRAN_MESSAGE__MSG_SF_TRIGGER_MSG)
goto error;
free(msg->sf_trigger_msg->header);
for (i = 0; i < msg->sf_trigger_msg->n_dl_info; i++) {
free(msg->sf_trigger_msg->dl_info[i]->harq_status);
free(msg->sf_trigger_msg->dl_info[i]);
}
free(msg->sf_trigger_msg->dl_info);
for (i = 0; i < msg->sf_trigger_msg->n_ul_info; i++) {
free(msg->sf_trigger_msg->ul_info[i]->ul_reception);
free(msg->sf_trigger_msg->ul_info[i]);
}
free(msg->sf_trigger_msg->ul_info);
free(msg->sf_trigger_msg);
free(msg);
return 0;
error:
//LOG_E(MAC, "%s: an error occured\n", __FUNCTION__);
return -1;
}
int flexran_agent_mac_create_empty_dl_config(mid_t mod_id, Protocol__FlexranMessage **msg) {
int xid = 0;
Protocol__FlexHeader *header;
if (flexran_create_header(xid, PROTOCOL__FLEX_TYPE__FLPT_DL_MAC_CONFIG, &header) != 0)
goto error;
Protocol__FlexDlMacConfig *dl_mac_config_msg;
dl_mac_config_msg = malloc(sizeof(Protocol__FlexDlMacConfig));
if (dl_mac_config_msg == NULL) {
goto error;
}
protocol__flex_dl_mac_config__init(dl_mac_config_msg);
dl_mac_config_msg->header = header;
dl_mac_config_msg->has_sfn_sf = 1;
dl_mac_config_msg->sfn_sf = flexran_get_sfn_sf(mod_id);
*msg = malloc(sizeof(Protocol__FlexranMessage));
if(*msg == NULL)
goto error;
protocol__flexran_message__init(*msg);
(*msg)->msg_case = PROTOCOL__FLEXRAN_MESSAGE__MSG_DL_MAC_CONFIG_MSG;
(*msg)->msg_dir = PROTOCOL__FLEXRAN_DIRECTION__INITIATING_MESSAGE;
(*msg)->dl_mac_config_msg = dl_mac_config_msg;
return 0;
error:
return -1;
}
int flexran_agent_mac_destroy_dl_config(Protocol__FlexranMessage *msg) {
int i,j, k;
if(msg->msg_case != PROTOCOL__FLEXRAN_MESSAGE__MSG_DL_MAC_CONFIG_MSG)
goto error;
Protocol__FlexDlDci *dl_dci;
free(msg->dl_mac_config_msg->header);
for (i = 0; i < msg->dl_mac_config_msg->n_dl_ue_data; i++) {
free(msg->dl_mac_config_msg->dl_ue_data[i]->ce_bitmap);
for (j = 0; j < msg->dl_mac_config_msg->dl_ue_data[i]->n_rlc_pdu; j++) {
for (k = 0; k < msg->dl_mac_config_msg->dl_ue_data[i]->rlc_pdu[j]->n_rlc_pdu_tb; k++) {
free(msg->dl_mac_config_msg->dl_ue_data[i]->rlc_pdu[j]->rlc_pdu_tb[k]);
}
free(msg->dl_mac_config_msg->dl_ue_data[i]->rlc_pdu[j]->rlc_pdu_tb);
free(msg->dl_mac_config_msg->dl_ue_data[i]->rlc_pdu[j]);
}
free(msg->dl_mac_config_msg->dl_ue_data[i]->rlc_pdu);
dl_dci = msg->dl_mac_config_msg->dl_ue_data[i]->dl_dci;
free(dl_dci->tbs_size);
free(dl_dci->mcs);
free(dl_dci->ndi);
free(dl_dci->rv);
free(dl_dci);
free(msg->dl_mac_config_msg->dl_ue_data[i]);
}
free(msg->dl_mac_config_msg->dl_ue_data);
for (i = 0; i < msg->dl_mac_config_msg->n_dl_rar; i++) {
dl_dci = msg->dl_mac_config_msg->dl_rar[i]->rar_dci;
free(dl_dci->tbs_size);
free(dl_dci->mcs);
free(dl_dci->ndi);
free(dl_dci->rv);
free(dl_dci);
free(msg->dl_mac_config_msg->dl_rar[i]);
}
free(msg->dl_mac_config_msg->dl_rar);
for (i = 0; i < msg->dl_mac_config_msg->n_dl_broadcast; i++) {
dl_dci = msg->dl_mac_config_msg->dl_broadcast[i]->broad_dci;
free(dl_dci->tbs_size);
free(dl_dci->mcs);
free(dl_dci->ndi);
free(dl_dci->rv);
free(dl_dci);
free(msg->dl_mac_config_msg->dl_broadcast[i]);
}
free(msg->dl_mac_config_msg->dl_broadcast);
for ( i = 0; i < msg->dl_mac_config_msg->n_ofdm_sym; i++) {
free(msg->dl_mac_config_msg->ofdm_sym[i]);
}
free(msg->dl_mac_config_msg->ofdm_sym);
free(msg->dl_mac_config_msg);
free(msg);
return 0;
error:
return -1;
}
int flexran_agent_mac_create_empty_ul_config(mid_t mod_id, Protocol__FlexranMessage **msg) {
int xid = 0;
Protocol__FlexHeader *header;
if (flexran_create_header(xid, PROTOCOL__FLEX_TYPE__FLPT_UL_MAC_CONFIG, &header) != 0)
goto error;
Protocol__FlexUlMacConfig *ul_mac_config_msg;
ul_mac_config_msg = malloc(sizeof(Protocol__FlexUlMacConfig));
if (ul_mac_config_msg == NULL) {
goto error;
}
protocol__flex_ul_mac_config__init(ul_mac_config_msg);
ul_mac_config_msg->header = header;
ul_mac_config_msg->has_sfn_sf = 1;
ul_mac_config_msg->sfn_sf = flexran_get_sfn_sf(mod_id);
*msg = malloc(sizeof(Protocol__FlexranMessage));
if(*msg == NULL)
goto error;
protocol__flexran_message__init(*msg);
(*msg)->msg_case = PROTOCOL__FLEXRAN_MESSAGE__MSG_UL_MAC_CONFIG_MSG;
(*msg)->msg_dir = PROTOCOL__FLEXRAN_DIRECTION__INITIATING_MESSAGE;
(*msg)->ul_mac_config_msg = ul_mac_config_msg;
return 0;
error:
return -1;
}
void flexran_agent_get_pending_dl_mac_config(mid_t mod_id, Protocol__FlexranMessage **msg) {
struct lfds700_misc_prng_state ls;
LFDS700_MISC_MAKE_VALID_ON_CURRENT_LOGICAL_CORE_INITS_COMPLETED_BEFORE_NOW_ON_ANY_OTHER_LOGICAL_CORE;
lfds700_misc_prng_init(&ls);
if (lfds700_ringbuffer_read(&ringbuffer_state[mod_id], NULL, (void **) msg, &ls) == 0) {
*msg = NULL;
}
}
int flexran_agent_mac_handle_dl_mac_config(mid_t mod_id, const void *params, Protocol__FlexranMessage **msg) {
struct lfds700_misc_prng_state ls;
enum lfds700_misc_flag overwrite_occurred_flag;
Protocol__FlexranMessage *overwritten_dl_config;
LFDS700_MISC_MAKE_VALID_ON_CURRENT_LOGICAL_CORE_INITS_COMPLETED_BEFORE_NOW_ON_ANY_OTHER_LOGICAL_CORE;
lfds700_misc_prng_init(&ls);
lfds700_ringbuffer_write( &ringbuffer_state[mod_id],
NULL,
(void *) params,
&overwrite_occurred_flag,
NULL,
(void **)&overwritten_dl_config,
&ls);
if (overwrite_occurred_flag == LFDS700_MISC_FLAG_RAISED) {
// Delete unmanaged dl_config
flexran_agent_mac_destroy_dl_config(overwritten_dl_config);
}
*msg = NULL;
return 2;
// error:
//*msg = NULL;
//return -1;
}
void flexran_agent_init_mac_agent(mid_t mod_id) {
int i, j;
lfds700_misc_library_init_valid_on_current_logical_core();
lfds700_misc_prng_init(&ps[mod_id]);
int num_elements = RINGBUFFER_SIZE + 1;
//Allow RINGBUFFER_SIZE messages to be stored in the ringbuffer at any time
dl_mac_config_array[mod_id] = malloc( sizeof(struct lfds700_ringbuffer_element) * num_elements);
lfds700_ringbuffer_init_valid_on_current_logical_core( &ringbuffer_state[mod_id], dl_mac_config_array[mod_id], num_elements, &ps[mod_id], NULL );
for (i = 0; i < NUMBER_OF_UE_MAX; i++) {
for (j = 0; j < 8; j++) {
harq_pid_updated[i][j] = 0;
}
}
}
/***********************************************
* FlexRAN agent - technology mac API implementation
***********************************************/
void flexran_agent_send_sr_info(mid_t mod_id) {
int size;
Protocol__FlexranMessage *msg;
void *data;
int priority = 0;
err_code_t err_code;
int xid = 0;
/*TODO: Must use a proper xid*/
err_code = flexran_agent_mac_sr_info(mod_id, (void *) &xid, &msg);
if (err_code < 0) {
goto error;
}
if (msg != NULL){
data=flexran_agent_pack_message(msg, &size);
/*Send sr info using the MAC channel of the eNB*/
if (flexran_agent_msg_send(mod_id, FLEXRAN_AGENT_MAC, data, size, priority)) {
err_code = PROTOCOL__FLEXRAN_ERR__MSG_ENQUEUING;
goto error;
}
LOG_D(FLEXRAN_AGENT,"sent message with size %d\n", size);
return;
}
error:
LOG_D(FLEXRAN_AGENT, "Could not send sr message\n");
}
void flexran_agent_send_sf_trigger(mid_t mod_id) {
int size;
Protocol__FlexranMessage *msg;
void *data;
int priority = 0;
err_code_t err_code;
int xid = 0;
/*TODO: Must use a proper xid*/
err_code = flexran_agent_mac_sf_trigger(mod_id, (void *) &xid, &msg);
if (err_code < 0) {
goto error;
}
if (msg != NULL){
data=flexran_agent_pack_message(msg, &size);
/*Send sr info using the MAC channel of the eNB*/
if (flexran_agent_msg_send(mod_id, FLEXRAN_AGENT_MAC, data, size, priority)) {
err_code = PROTOCOL__FLEXRAN_ERR__MSG_ENQUEUING;
goto error;
}
LOG_D(FLEXRAN_AGENT,"sent message with size %d\n", size);
return;
}
error:
LOG_D(FLEXRAN_AGENT, "Could not send sf trigger message\n");
}
int flexran_agent_register_mac_xface(mid_t mod_id, AGENT_MAC_xface *xface) {
if (mac_agent_registered[mod_id]) {
LOG_E(MAC, "MAC agent for eNB %d is already registered\n", mod_id);
return -1;
}
//xface->agent_ctxt = &shared_ctxt[mod_id];
xface->flexran_agent_send_sr_info = flexran_agent_send_sr_info;
xface->flexran_agent_send_sf_trigger = flexran_agent_send_sf_trigger;
//xface->flexran_agent_send_update_mac_stats = flexran_agent_send_update_mac_stats;
xface->flexran_agent_schedule_ue_spec = flexran_schedule_ue_spec_default;
xface->flexran_agent_schedule_ul_spec = flexran_agent_schedule_ulsch_ue_spec;
//xface->flexran_agent_schedule_ue_spec = flexran_schedule_ue_spec_remote;
xface->flexran_agent_get_pending_dl_mac_config = flexran_agent_get_pending_dl_mac_config;
xface->dl_scheduler_loaded_lib = NULL;
mac_agent_registered[mod_id] = 1;
agent_mac_xface[mod_id] = xface;
return 0;
}
int flexran_agent_unregister_mac_xface(mid_t mod_id, AGENT_MAC_xface *xface) {
//xface->agent_ctxt = NULL;
xface->flexran_agent_send_sr_info = NULL;
xface->flexran_agent_send_sf_trigger = NULL;
//xface->flexran_agent_send_update_mac_stats = NULL;
xface->flexran_agent_schedule_ue_spec = NULL;
xface->flexran_agent_get_pending_dl_mac_config = NULL;
xface->dl_scheduler_loaded_lib = NULL;
mac_agent_registered[mod_id] = 0;
agent_mac_xface[mod_id] = NULL;
return 0;
}