add srsenb::rlc_nr class

master
Francisco Paisana 5 years ago
parent 9001117b2d
commit 0916e29de4

@ -0,0 +1,103 @@
/*
* Copyright 2013-2020 Software Radio Systems Limited
*
* This file is part of srsLTE.
*
* srsLTE is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsLTE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
#ifndef SRSENB_RLC_NR_H
#define SRSENB_RLC_NR_H
#include "srslte/common/log.h"
#include "srslte/common/log_filter.h"
#include "srslte/common/logger.h"
#include "srslte/interfaces/gnb_interfaces.h"
#include "srslte/upper/rlc.h"
#include <map>
namespace srsenb {
typedef struct {
uint32_t lcid;
uint32_t plmn;
uint16_t mtch_stop;
uint8_t* payload;
} mch_service_t;
class rlc_nr : public rlc_interface_mac_nr, public rlc_interface_rrc_nr, public rlc_interface_pdcp_nr
{
public:
explicit rlc_nr(const char* logname);
void init(pdcp_interface_rlc_nr* pdcp_,
rrc_interface_rlc_nr* rrc_,
mac_interface_rlc_nr* mac_,
srslte::timer_handler* timers_);
void stop();
// rlc_interface_rrc_nr
void clear_buffer(uint16_t rnti);
void add_user(uint16_t rnti);
void rem_user(uint16_t rnti);
void add_bearer(uint16_t rnti, uint32_t lcid, srslte::rlc_config_t cnfg);
void add_bearer_mrb(uint16_t rnti, uint32_t lcid);
// rlc_interface_pdcp_nr
void write_sdu(uint16_t rnti, uint32_t lcid, srslte::unique_byte_buffer_t sdu);
bool rb_is_um(uint16_t rnti, uint32_t lcid);
std::string get_rb_name(uint32_t lcid);
// rlc_interface_mac_nr
int read_pdu(uint16_t rnti, uint32_t lcid, uint8_t* payload, uint32_t nof_bytes);
// void read_pdu_bcch_dlsch(uint32_t sib_index, uint8_t* payload);
void write_pdu(uint16_t rnti, uint32_t lcid, uint8_t* payload, uint32_t nof_bytes);
void read_pdu_pcch(uint8_t* payload, uint32_t buffer_size);
private:
class user_interface : public srsue::pdcp_interface_rlc, public srsue::rrc_interface_rlc
{
public:
void write_pdu(uint32_t lcid, srslte::unique_byte_buffer_t sdu);
void write_pdu_bcch_bch(srslte::unique_byte_buffer_t sdu);
void write_pdu_bcch_dlsch(srslte::unique_byte_buffer_t sdu);
void write_pdu_pcch(srslte::unique_byte_buffer_t sdu);
void write_pdu_mch(uint32_t lcid, srslte::unique_byte_buffer_t sdu) {}
void max_retx_attempted() final;
std::string get_rb_name(uint32_t lcid) final;
uint16_t rnti;
srsenb::pdcp_interface_rlc_nr* m_pdcp = nullptr;
srsenb::rrc_interface_rlc_nr* m_rrc = nullptr;
std::unique_ptr<srslte::rlc> m_rlc;
rlc_nr* parent = nullptr;
};
// args
srslte::byte_buffer_pool* pool = nullptr;
srslte::log_ref m_log;
srslte::timer_handler* timers = nullptr;
mac_interface_rlc_nr* m_mac = nullptr;
pdcp_interface_rlc_nr* m_pdcp = nullptr;
rrc_interface_rlc_nr* m_rrc = nullptr;
// state
std::map<uint32_t, user_interface> users;
std::vector<mch_service_t> mch_services;
};
} // namespace srsenb
#endif // SRSENB_RLC_NR_H

@ -21,8 +21,8 @@
set(SOURCES gtpu.cc pdcp.cc rlc.cc s1ap.cc) set(SOURCES gtpu.cc pdcp.cc rlc.cc s1ap.cc)
add_library(srsenb_upper STATIC ${SOURCES}) add_library(srsenb_upper STATIC ${SOURCES})
if (ENABLE_5GNR) if(ENABLE_5GNR)
set(SOURCES pdcp_nr.cc) set(SOURCES pdcp_nr.cc rlc_nr.cc)
add_library(srsgnb_upper STATIC ${SOURCES}) add_library(srsgnb_upper STATIC ${SOURCES})
endif (ENABLE_5GNR) endif()

@ -0,0 +1,211 @@
/*
* Copyright 2013-2020 Software Radio Systems Limited
*
* This file is part of srsLTE.
*
* srsLTE is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsLTE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
#include "srsenb/hdr/stack/upper/rlc_nr.h"
#include "srslte/interfaces/nr_common_interface_types.h"
namespace srsenb {
rlc_nr::rlc_nr(const char* logname) : m_log(logname), pool(srslte::byte_buffer_pool::get_instance()) {}
void rlc_nr::init(pdcp_interface_rlc_nr* pdcp_,
rrc_interface_rlc_nr* rrc_,
mac_interface_rlc_nr* mac_,
srslte::timer_handler* timers_)
{
m_pdcp = pdcp_;
m_rrc = rrc_;
m_mac = mac_;
timers = timers_;
}
void rlc_nr::stop()
{
for (auto& user : users) {
user.second.m_rlc->stop();
}
users.clear();
}
void rlc_nr::add_user(uint16_t rnti)
{
if (users.count(rnti) == 0) {
user_interface user_itf;
user_itf.rnti = rnti;
user_itf.m_pdcp = m_pdcp;
user_itf.m_rrc = m_rrc;
user_itf.parent = this;
user_itf.m_rlc.reset(new srslte::rlc("RLC"));
users[rnti] = std::move(user_itf);
users[rnti].m_rlc->init(&users[rnti], &users[rnti], timers, (int)srslte::rb_id_nr_t::NR_SRB0);
}
}
void rlc_nr::rem_user(uint16_t rnti)
{
if (users.count(rnti)) {
users[rnti].m_rlc->stop();
users.erase(rnti);
} else {
m_log->error("Removing rnti=0x%x. Already removed\n", rnti);
}
}
void rlc_nr::clear_buffer(uint16_t rnti)
{
if (users.count(rnti)) {
users[rnti].m_rlc->empty_queue();
for (int i = 0; i < SRSLTE_N_RADIO_BEARERS; i++) {
m_mac->rlc_buffer_state(rnti, i, 0, 0);
}
m_log->info("Cleared buffer rnti=0x%x\n", rnti);
}
}
void rlc_nr::add_bearer(uint16_t rnti, uint32_t lcid, srslte::rlc_config_t cnfg)
{
if (users.count(rnti)) {
users[rnti].m_rlc->add_bearer(lcid, cnfg);
}
}
void rlc_nr::add_bearer_mrb(uint16_t rnti, uint32_t lcid)
{
if (users.count(rnti)) {
users[rnti].m_rlc->add_bearer_mrb(lcid);
}
}
void rlc_nr::read_pdu_pcch(uint8_t* payload, uint32_t buffer_size)
{
m_rrc->read_pdu_pcch(payload, buffer_size);
}
int rlc_nr::read_pdu(uint16_t rnti, uint32_t lcid, uint8_t* payload, uint32_t nof_bytes)
{
int ret;
uint32_t tx_queue;
if (users.count(rnti)) {
if (rnti != SRSLTE_MRNTI) {
ret = users[rnti].m_rlc->read_pdu(lcid, payload, nof_bytes);
tx_queue = users[rnti].m_rlc->get_buffer_state(lcid);
} else {
ret = users[rnti].m_rlc->read_pdu_mch(lcid, payload, nof_bytes);
tx_queue = users[rnti].m_rlc->get_total_mch_buffer_state(lcid);
}
// In the eNodeB, there is no polling for buffer state from the scheduler, thus
// communicate buffer state every time a PDU is read
uint32_t retx_queue = 0;
m_log->debug("Buffer state PDCP: rnti=0x%x, lcid=%d, tx_queue=%d\n", rnti, lcid, tx_queue);
m_mac->rlc_buffer_state(rnti, lcid, tx_queue, retx_queue);
} else {
ret = SRSLTE_ERROR;
}
return ret;
}
void rlc_nr::write_pdu(uint16_t rnti, uint32_t lcid, uint8_t* payload, uint32_t nof_bytes)
{
if (users.count(rnti)) {
users[rnti].m_rlc->write_pdu(lcid, payload, nof_bytes);
// In the eNodeB, there is no polling for buffer state from the scheduler, thus
// communicate buffer state every time a new PDU is written
uint32_t tx_queue = users[rnti].m_rlc->get_buffer_state(lcid);
uint32_t retx_queue = 0;
m_log->debug("Buffer state PDCP: rnti=0x%x, lcid=%d, tx_queue=%d\n", rnti, lcid, tx_queue);
m_mac->rlc_buffer_state(rnti, lcid, tx_queue, retx_queue);
}
}
// void rlc::read_pdu_bcch_dlsch(uint32_t sib_index, uint8_t* payload)
//{
// // RLC is transparent for BCCH
// m_rrc->read_pdu_bcch_dlsch(sib_index, payload);
//}
void rlc_nr::write_sdu(uint16_t rnti, uint32_t lcid, srslte::unique_byte_buffer_t sdu)
{
uint32_t tx_queue;
if (users.count(rnti)) {
if (rnti != SRSLTE_MRNTI) {
users[rnti].m_rlc->write_sdu(lcid, std::move(sdu), false);
tx_queue = users[rnti].m_rlc->get_buffer_state(lcid);
} else {
users[rnti].m_rlc->write_sdu_mch(lcid, std::move(sdu));
tx_queue = users[rnti].m_rlc->get_total_mch_buffer_state(lcid);
}
// In the eNodeB, there is no polling for buffer state from the scheduler, thus
// communicate buffer state every time a new SDU is written
uint32_t retx_queue = 0;
m_mac->rlc_buffer_state(rnti, lcid, tx_queue, retx_queue);
m_log->info("Buffer state: rnti=0x%x, lcid=%d, tx_queue=%d\n", rnti, lcid, tx_queue);
}
}
bool rlc_nr::rb_is_um(uint16_t rnti, uint32_t lcid)
{
bool ret = false;
if (users.count(rnti)) {
ret = users[rnti].m_rlc->rb_is_um(lcid);
}
return ret;
}
void rlc_nr::user_interface::max_retx_attempted()
{
m_rrc->max_retx_attempted(rnti);
}
void rlc_nr::user_interface::write_pdu(uint32_t lcid, srslte::unique_byte_buffer_t sdu)
{
if (lcid == (int)srslte::rb_id_nr_t::NR_SRB0) {
m_rrc->write_pdu(rnti, lcid, std::move(sdu));
} else {
m_pdcp->write_pdu(rnti, lcid, std::move(sdu));
}
}
void rlc_nr::user_interface::write_pdu_bcch_bch(srslte::unique_byte_buffer_t sdu)
{
ERROR("Error: Received BCCH from ue=%d\n", rnti);
}
void rlc_nr::user_interface::write_pdu_bcch_dlsch(srslte::unique_byte_buffer_t sdu)
{
ERROR("Error: Received BCCH from ue=%d\n", rnti);
}
void rlc_nr::user_interface::write_pdu_pcch(srslte::unique_byte_buffer_t sdu)
{
ERROR("Error: Received PCCH from ue=%d\n", rnti);
}
std::string rlc_nr::user_interface::get_rb_name(uint32_t lcid)
{
return srslte::to_string(static_cast<srslte::rb_id_nr_t>(lcid));
}
} // namespace srsenb
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