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srsRAN_4G/lib/test/mac/mac_pdu_nr_test.cc

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/**
* Copyright 2013-2021 Software Radio Systems Limited
*
* This file is part of srsRAN.
*
* srsRAN 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.
*
* srsRAN 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 "srsran/common/mac_pcap.h"
#include "srsran/common/string_helpers.h"
#include "srsran/common/test_common.h"
#include "srsran/config.h"
#include "srsran/mac/mac_rar_pdu_nr.h"
#include "srsran/mac/mac_sch_pdu_nr.h"
#include <array>
#include <iostream>
#include <memory>
#include <vector>
#define PCAP 0
#define PCAP_CRNTI (0x1001)
#define PCAP_RAR_RNTI (0x0016)
#define PCAP_TTI (666)
using namespace srsran;
static std::unique_ptr<srsran::mac_pcap> pcap_handle = nullptr;
int mac_dl_sch_pdu_unpack_and_pack_test1()
{
// MAC PDU with DL-SCH subheader with 8-bit length field
// Bit 1-8
// | | | | | | | | |
// | R |F=0| LCID | Octet 1
// | L | Octet 1
// TV1 - MAC PDU with short subheader for CCCH, MAC SDU length is 8 B, total PDU is 10 B
uint8_t mac_dl_sch_pdu_1[] = {0x00, 0x08, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88};
if (pcap_handle) {
pcap_handle->write_dl_crnti_nr(mac_dl_sch_pdu_1, sizeof(mac_dl_sch_pdu_1), PCAP_CRNTI, true, PCAP_TTI);
}
srsran::mac_sch_pdu_nr pdu;
pdu.unpack(mac_dl_sch_pdu_1, sizeof(mac_dl_sch_pdu_1));
TESTASSERT(pdu.get_num_subpdus() == 1);
mac_sch_subpdu_nr subpdu = pdu.get_subpdu(0);
TESTASSERT(subpdu.get_total_length() == 10);
TESTASSERT(subpdu.get_sdu_length() == 8);
TESTASSERT(subpdu.get_lcid() == 0);
// pack PDU again
byte_buffer_t tx_buffer;
srsran::mac_sch_pdu_nr tx_pdu;
tx_pdu.init_tx(&tx_buffer, sizeof(mac_dl_sch_pdu_1));
// Add SDU part of TV from above
tx_pdu.add_sdu(0, &mac_dl_sch_pdu_1[2], 8);
TESTASSERT(tx_pdu.get_remaing_len() == 0);
TESTASSERT(tx_buffer.N_bytes == sizeof(mac_dl_sch_pdu_1));
TESTASSERT(memcmp(tx_buffer.msg, mac_dl_sch_pdu_1, tx_buffer.N_bytes) == 0);
if (pcap_handle) {
pcap_handle->write_dl_crnti_nr(tx_buffer.msg, tx_buffer.N_bytes, PCAP_CRNTI, true, PCAP_TTI);
}
auto& mac_logger = srslog::fetch_basic_logger("MAC");
mac_logger.info(tx_buffer.msg, tx_buffer.N_bytes, "Generated MAC PDU (%d B)", tx_buffer.N_bytes);
return SRSRAN_SUCCESS;
}
int mac_dl_sch_pdu_unpack_test2()
{
// MAC PDU with DL-SCH subheader with 16-bit length field
// Bit 1-8
// | | | | | | | | |
// | R |F=1| LCID | Octet 1
// | L | Octet 2
// | L | Octet 3
// Note: Pack test is not working in this case as it would generate a PDU with the short length field only
// TV2 - MAC PDU with long subheader for LCID=2, MAC SDU length is 8 B, total PDU is 11 B
uint8_t mac_dl_sch_pdu_2[] = {0x42, 0x00, 0x08, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88};
if (pcap_handle) {
pcap_handle->write_dl_crnti_nr(mac_dl_sch_pdu_2, sizeof(mac_dl_sch_pdu_2), PCAP_CRNTI, true, PCAP_TTI);
}
srsran::mac_sch_pdu_nr pdu;
pdu.unpack(mac_dl_sch_pdu_2, sizeof(mac_dl_sch_pdu_2));
TESTASSERT(pdu.get_num_subpdus() == 1);
mac_sch_subpdu_nr subpdu = pdu.get_subpdu(0);
TESTASSERT(subpdu.get_total_length() == 11);
TESTASSERT(subpdu.get_sdu_length() == 8);
TESTASSERT(subpdu.get_lcid() == 2);
return SRSRAN_SUCCESS;
}
int mac_dl_sch_pdu_pack_test3()
{
// MAC PDU with DL-SCH subheader with 16-bit length field (512 B SDU + 3 B header)
// Bit 1-8
// | | | | | | | | |
// | R |F=1| LCID | Octet 1
// | L | Octet 2
// | L | Octet 3
uint8_t sdu[512] = {};
// populate SDU payload
for (uint32_t i = 0; i < 512; i++) {
sdu[i] = i % 256;
}
// pack buffer
byte_buffer_t tx_buffer;
srsran::mac_sch_pdu_nr tx_pdu;
tx_pdu.init_tx(&tx_buffer, 1024);
// Add SDU
tx_pdu.add_sdu(4, sdu, sizeof(sdu));
TESTASSERT(tx_pdu.get_remaing_len() == 509);
TESTASSERT(tx_buffer.N_bytes == 515);
if (pcap_handle) {
pcap_handle->write_dl_crnti_nr(tx_buffer.msg, tx_buffer.N_bytes, PCAP_CRNTI, true, PCAP_TTI);
}
auto& mac_logger = srslog::fetch_basic_logger("MAC");
mac_logger.info(tx_buffer.msg, tx_buffer.N_bytes, "Generated MAC PDU (%d B)", tx_buffer.N_bytes);
return SRSRAN_SUCCESS;
}
int mac_dl_sch_pdu_pack_test4()
{
// MAC PDU with only padding
// Bit 1-8
// | | | | | | | | |
// | R | R | LCID | Octet 1
// | zeros | Octet ..
// TV2 - MAC PDU with a single LCID with padding only
uint8_t tv[] = {0x3f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
const uint32_t pdu_size = 8;
byte_buffer_t tx_buffer;
// modify buffer (to be nulled during PDU packing
tx_buffer.msg[4] = 0xaa;
srsran::mac_sch_pdu_nr tx_pdu;
tx_pdu.init_tx(&tx_buffer, pdu_size);
TESTASSERT(tx_pdu.get_remaing_len() == pdu_size);
tx_pdu.pack();
TESTASSERT(tx_buffer.N_bytes == pdu_size);
TESTASSERT(tx_buffer.N_bytes == sizeof(tv));
TESTASSERT(memcmp(tx_buffer.msg, tv, tx_buffer.N_bytes) == 0);
if (pcap_handle) {
pcap_handle->write_dl_crnti_nr(tx_buffer.msg, tx_buffer.N_bytes, PCAP_CRNTI, true, PCAP_TTI);
}
auto& mac_logger = srslog::fetch_basic_logger("MAC");
mac_logger.info(tx_buffer.msg, tx_buffer.N_bytes, "Generated MAC PDU (%d B)", tx_buffer.N_bytes);
return SRSRAN_SUCCESS;
}
int mac_dl_sch_pdu_pack_test5()
{
// MAC PDU with DL-SCH subheader with 8-bit length field and padding after that
// Bit 1-8
// | | | | | | | | |
// | R |F=0| LCID | Octet 1
// | L | Octet 2
// | zeros | Octet 3-10
// | R | R | LCID | Octet 11
// | zeros | Octet ..
// TV2 - MAC PDU with a single LCID with padding only
uint8_t tv[] = {0x01, 0x08, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x3f, 0x00, 0x00, 0x00, 0x00, 0x00};
const uint32_t pdu_size = 16;
byte_buffer_t tx_buffer;
tx_buffer.clear();
srsran::mac_sch_pdu_nr tx_pdu;
tx_pdu.init_tx(&tx_buffer, pdu_size);
// Add SDU part of TV from above
tx_pdu.add_sdu(1, &tv[2], 8);
TESTASSERT(tx_pdu.get_remaing_len() == 6);
tx_pdu.pack();
TESTASSERT(tx_pdu.get_remaing_len() == 0);
TESTASSERT(tx_buffer.N_bytes == pdu_size);
TESTASSERT(tx_buffer.N_bytes == sizeof(tv));
TESTASSERT(memcmp(tx_buffer.msg, tv, tx_buffer.N_bytes) == 0);
if (pcap_handle) {
pcap_handle->write_dl_crnti_nr(tx_buffer.msg, tx_buffer.N_bytes, PCAP_CRNTI, true, PCAP_TTI);
}
// pretty print PDU
fmt::memory_buffer buff;
tx_pdu.to_string(buff);
auto& mac_logger = srslog::fetch_basic_logger("MAC");
mac_logger.info(
tx_buffer.msg, tx_buffer.N_bytes, "Generated MAC PDU (%d B): %s", tx_buffer.N_bytes, srsran::to_c_str(buff));
return SRSRAN_SUCCESS;
}
int mac_dl_sch_pdu_unpack_test6()
{
// MAC PDU with DL-SCH subheader reserved LCID
// Bit 1-8
// | | | | | | | | |
// | R |F=1| LCID | Octet 1
// | L | Octet 2
// TV2 - MAC PDU with reserved LCID (46=0x2e)
uint8_t mac_dl_sch_pdu_2[] = {0x2e, 0x04, 0x11, 0x22, 0x33, 0x44};
if (pcap_handle) {
pcap_handle->write_dl_crnti_nr(mac_dl_sch_pdu_2, sizeof(mac_dl_sch_pdu_2), PCAP_CRNTI, true, PCAP_TTI);
}
srsran::mac_sch_pdu_nr pdu;
pdu.unpack(mac_dl_sch_pdu_2, sizeof(mac_dl_sch_pdu_2));
TESTASSERT(pdu.get_num_subpdus() == 0);
return SRSRAN_SUCCESS;
}
int mac_rar_pdu_test7()
{
// MAC PDU with RAR PDU with single RAPID=0
// rapid=0
// ta=180
// ul_grant:
// hopping_flag=0
// riv=0x1
// time_domain_rsc=1
// mcs=4
// tpc_command=3
// csi_request=0
// tc-rnti=0x4616
// Bit 1-8
// | | | | | | | | |
// | R |T=1| RAPID=0 | Octet 1
// | RAR | Octet 2-8
const uint32_t tv_rapid = 0;
const uint32_t tv_ta = 180;
const uint16_t tv_tcrnti = 0x4616;
const uint8_t tv_msg3_grant[mac_rar_subpdu_nr::UL_GRANT_NBITS] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00}; // unpacked UL grant
uint8_t mac_dl_rar_pdu[] = {0x40, 0x05, 0xa0, 0x00, 0x11, 0x46, 0x46, 0x16, 0x00, 0x00, 0x00};
if (pcap_handle) {
pcap_handle->write_dl_ra_rnti_nr(mac_dl_rar_pdu, sizeof(mac_dl_rar_pdu), PCAP_RAR_RNTI, true, PCAP_TTI);
}
srsran::mac_rar_pdu_nr pdu;
TESTASSERT(pdu.unpack(mac_dl_rar_pdu, sizeof(mac_dl_rar_pdu)) == true);
fmt::memory_buffer buff;
pdu.to_string(buff);
auto& mac_logger = srslog::fetch_basic_logger("MAC");
mac_logger.info("Rx PDU: %s", srsran::to_c_str(buff));
TESTASSERT(pdu.get_num_subpdus() == 1);
mac_rar_subpdu_nr subpdu = pdu.get_subpdu(0);
TESTASSERT(subpdu.has_rapid() == true);
TESTASSERT(subpdu.has_backoff() == false);
TESTASSERT(subpdu.get_temp_crnti() == tv_tcrnti);
TESTASSERT(subpdu.get_ta() == tv_ta);
TESTASSERT(subpdu.get_rapid() == tv_rapid);
std::array<uint8_t, mac_rar_subpdu_nr::UL_GRANT_NBITS> msg3_grant = subpdu.get_ul_grant();
TESTASSERT(memcmp(msg3_grant.data(), tv_msg3_grant, msg3_grant.size()) == 0);
// pack again
byte_buffer_t tx_buffer;
tx_buffer.clear();
srsran::mac_rar_pdu_nr tx_pdu;
tx_pdu.init_tx(&tx_buffer, sizeof(mac_dl_rar_pdu));
mac_rar_subpdu_nr& rar_subpdu = tx_pdu.add_subpdu();
rar_subpdu.set_ta(tv_ta);
rar_subpdu.set_rapid(tv_rapid);
rar_subpdu.set_temp_crnti(tv_tcrnti);
rar_subpdu.set_ul_grant(msg3_grant);
TESTASSERT(tx_pdu.pack() == SRSRAN_SUCCESS);
TESTASSERT(tx_buffer.N_bytes == sizeof(mac_dl_rar_pdu));
TESTASSERT(memcmp(tx_buffer.msg, mac_dl_rar_pdu, tx_buffer.N_bytes) == 0);
tx_pdu.to_string(buff);
mac_logger.info("Tx PDU: %s", srsran::to_c_str(buff));
if (pcap_handle) {
pcap_handle->write_dl_ra_rnti_nr(tx_buffer.msg, tx_buffer.N_bytes, PCAP_RAR_RNTI, true, PCAP_TTI);
}
return SRSRAN_SUCCESS;
}
int mac_rar_pdu_unpack_test8()
{
// Malformed MAC PDU, says it has RAR PDU but is too short to include MAC RAR
// Bit 1-8
// | | | | | | | | |
// | E |T=1| RAPID=0 | Octet 1
// | RAR_fragment | Octet 2
uint8_t mac_dl_rar_pdu[] = {0x40, 0x05};
if (pcap_handle) {
pcap_handle->write_dl_ra_rnti_nr(mac_dl_rar_pdu, sizeof(mac_dl_rar_pdu), 0x0016, true, PCAP_TTI);
}
// unpacking should fail
srsran::mac_rar_pdu_nr pdu;
TESTASSERT(pdu.unpack(mac_dl_rar_pdu, sizeof(mac_dl_rar_pdu)) == false);
TESTASSERT(pdu.get_num_subpdus() == 0);
// Malformed PDU with reserved bits set
// Bit 1-8
// | | | | | | | | |
// | E |T=0| R | R | BI | Octet 1
uint8_t mac_dl_rar_pdu2[] = {0x10};
TESTASSERT(pdu.unpack(mac_dl_rar_pdu2, sizeof(mac_dl_rar_pdu2)) == false);
TESTASSERT(pdu.get_num_subpdus() == 0);
return SRSRAN_SUCCESS;
}
int mac_dl_sch_pdu_unpack_test9()
{
// MAC PDU with Timing Advance CE and padding
uint8_t tv[] = {0x3d, 0x1f, 0x3f, 0x00, 0x00, 0x00};
if (pcap_handle) {
pcap_handle->write_dl_crnti_nr(tv, sizeof(tv), PCAP_CRNTI, true, PCAP_TTI);
}
srsran::mac_sch_pdu_nr pdu;
pdu.unpack(tv, sizeof(tv));
TESTASSERT(pdu.get_num_subpdus() == 2);
mac_sch_subpdu_nr subpdu = pdu.get_subpdu(0);
TESTASSERT(subpdu.get_ta().tag_id == 0);
TESTASSERT(subpdu.get_ta().ta_command == 31);
return SRSRAN_SUCCESS;
}
int mac_ul_sch_pdu_unpack_test1()
{
// UL-SCH MAC PDU with fixed-size CE and DL-SCH subheader with 16-bit length field
// Note: this is a malformed UL-SCH PDU has SDU is placed after the CE
// Bit 1-8
// | | | | | | | | |
// | R | R | LCID | Octet 1 (C-RNTI LCID = 0x )
// | C-RNTI | Octet 2
// | C-RNTI | Octet 3
// | R |F=1| LCID | Octet 4
// | L | Octet 5
// | L | Octet 6
// | data | Octet 7-x
// TV3 - UL-SCH MAC PDU with long subheader for LCID=2, MAC SDU length is 4 B, total PDU is 9 B
const uint8_t ul_sch_crnti[] = {0x11, 0x22};
uint8_t mac_ul_sch_pdu_1[] = {0x3a, 0x11, 0x22, 0x43, 0x00, 0x04, 0x11, 0x22, 0x33, 0x44};
if (pcap_handle) {
pcap_handle->write_ul_crnti_nr(mac_ul_sch_pdu_1, sizeof(mac_ul_sch_pdu_1), PCAP_CRNTI, true, PCAP_TTI);
}
srsran::mac_sch_pdu_nr pdu(true);
pdu.unpack(mac_ul_sch_pdu_1, sizeof(mac_ul_sch_pdu_1));
TESTASSERT(pdu.get_num_subpdus() == 2);
// First subpdu is C-RNTI CE
mac_sch_subpdu_nr subpdu0 = pdu.get_subpdu(0);
TESTASSERT(subpdu0.get_total_length() == 3);
TESTASSERT(subpdu0.get_sdu_length() == 2);
TESTASSERT(subpdu0.get_lcid() == mac_sch_subpdu_nr::CRNTI);
TESTASSERT(memcmp(subpdu0.get_sdu(), (uint8_t*)&ul_sch_crnti, sizeof(ul_sch_crnti)) == 0);
// Second subpdu is UL-SCH
mac_sch_subpdu_nr subpdu1 = pdu.get_subpdu(1);
TESTASSERT(subpdu1.get_total_length() == 7);
TESTASSERT(subpdu1.get_sdu_length() == 4);
TESTASSERT(subpdu1.get_lcid() == 3);
return SRSRAN_SUCCESS;
}
int mac_ul_sch_pdu_unpack_and_pack_test2()
{
// MAC PDU with UL-SCH (for UL-CCCH) subheader
// Bit 1-8
// | | | | | | | | |
// | R | R | LCID | Octet 1
// TV1 - MAC PDU with short subheader for CCCH, MAC SDU length is 8 B, total PDU is 10 B
uint8_t mac_ul_sch_pdu_1[] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88};
if (pcap_handle) {
pcap_handle->write_ul_crnti_nr(mac_ul_sch_pdu_1, sizeof(mac_ul_sch_pdu_1), PCAP_CRNTI, true, PCAP_TTI);
}
srsran::mac_sch_pdu_nr pdu(true);
pdu.unpack(mac_ul_sch_pdu_1, sizeof(mac_ul_sch_pdu_1));
TESTASSERT(pdu.get_num_subpdus() == 1);
mac_sch_subpdu_nr subpdu = pdu.get_subpdu(0);
TESTASSERT(subpdu.get_total_length() == 9);
TESTASSERT(subpdu.get_sdu_length() == 8);
TESTASSERT(subpdu.get_lcid() == 0);
// pack PDU again
byte_buffer_t tx_buffer;
srsran::mac_sch_pdu_nr tx_pdu;
tx_pdu.init_tx(&tx_buffer, sizeof(mac_ul_sch_pdu_1), true);
// Add SDU part of TV from above
tx_pdu.add_sdu(0, &mac_ul_sch_pdu_1[1], 8);
TESTASSERT(tx_pdu.get_remaing_len() == 0);
TESTASSERT(tx_buffer.N_bytes == sizeof(mac_ul_sch_pdu_1));
TESTASSERT(memcmp(tx_buffer.msg, mac_ul_sch_pdu_1, tx_buffer.N_bytes) == 0);
if (pcap_handle) {
pcap_handle->write_ul_crnti_nr(tx_buffer.msg, tx_buffer.N_bytes, PCAP_CRNTI, true, PCAP_TTI);
}
auto& mac_logger = srslog::fetch_basic_logger("MAC");
mac_logger.info(tx_buffer.msg, tx_buffer.N_bytes, "Generated MAC PDU (%d B)", tx_buffer.N_bytes);
return SRSRAN_SUCCESS;
}
int mac_ul_sch_pdu_unpack_and_pack_test3()
{
// MAC PDU with UL-SCH (with normal LCID) subheader for short SDU
// Bit 1-8
// | | | | | | | | |
// | R |F=0| LCID | Octet 1
// | L | Octet 2
// TV1 - MAC PDU with short subheader for CCCH, MAC SDU length is 8 B, total PDU is 10 B
uint8_t mac_ul_sch_pdu_1[] = {0x02, 0x0a, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa};
if (pcap_handle) {
pcap_handle->write_ul_crnti_nr(mac_ul_sch_pdu_1, sizeof(mac_ul_sch_pdu_1), PCAP_CRNTI, true, PCAP_TTI);
}
srsran::mac_sch_pdu_nr pdu(true);
pdu.unpack(mac_ul_sch_pdu_1, sizeof(mac_ul_sch_pdu_1));
TESTASSERT(pdu.get_num_subpdus() == 1);
mac_sch_subpdu_nr subpdu = pdu.get_subpdu(0);
TESTASSERT(subpdu.get_total_length() == 12);
TESTASSERT(subpdu.get_sdu_length() == 10);
TESTASSERT(subpdu.get_lcid() == 2);
// pack PDU again
byte_buffer_t tx_buffer;
srsran::mac_sch_pdu_nr tx_pdu;
tx_pdu.init_tx(&tx_buffer, sizeof(mac_ul_sch_pdu_1), true);
// Add SDU part of TV from above
tx_pdu.add_sdu(2, &mac_ul_sch_pdu_1[2], 10);
TESTASSERT(tx_pdu.get_remaing_len() == 0);
TESTASSERT(tx_buffer.N_bytes == sizeof(mac_ul_sch_pdu_1));
TESTASSERT(memcmp(tx_buffer.msg, mac_ul_sch_pdu_1, tx_buffer.N_bytes) == 0);
if (pcap_handle) {
pcap_handle->write_ul_crnti_nr(tx_buffer.msg, tx_buffer.N_bytes, PCAP_CRNTI, true, PCAP_TTI);
}
auto& mac_logger = srslog::fetch_basic_logger("MAC");
mac_logger.info(tx_buffer.msg, tx_buffer.N_bytes, "Generated MAC PDU (%d B)", tx_buffer.N_bytes);
return SRSRAN_SUCCESS;
}
int mac_ul_sch_pdu_pack_test4()
{
// MAC PDU with UL-SCH (with normal LCID) subheader for long SDU
// Bit 1-8
// | | | | | | | | |
// | R |F=1| LCID | Octet 1
// | L | Octet 2
// | L | Octet 3
uint8_t sdu[512] = {};
// populate SDU payload
for (uint32_t i = 0; i < 512; i++) {
sdu[i] = i % 256;
}
// pack PDU again
byte_buffer_t tx_buffer;
srsran::mac_sch_pdu_nr tx_pdu;
tx_pdu.init_tx(&tx_buffer, sizeof(sdu) + 3, true);
// Add SDU part of TV from above
tx_pdu.add_sdu(2, sdu, sizeof(sdu));
TESTASSERT(tx_pdu.get_remaing_len() == 0);
TESTASSERT(tx_buffer.N_bytes == sizeof(sdu) + 3);
if (pcap_handle) {
pcap_handle->write_ul_crnti_nr(tx_buffer.msg, tx_buffer.N_bytes, PCAP_CRNTI, true, PCAP_TTI);
}
auto& mac_logger = srslog::fetch_basic_logger("MAC");
mac_logger.info(tx_buffer.msg, tx_buffer.N_bytes, "Generated MAC PDU (%d B)", tx_buffer.N_bytes);
return SRSRAN_SUCCESS;
}
int mac_ul_sch_pdu_unpack_test5()
{
// MAC PDU with UL-SCH (with normal LCID) subheader for short SDU but reserved LCID
// Bit 1-8
// | | | | | | | | |
// | R |F=0| LCID | Octet 1
// | L | Octet 2
// TV1 - MAC PDU with short subheader but reserved LCID for UL-SCH (LCID=33)
uint8_t mac_ul_sch_pdu_1[] = {0x21, 0x0a, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa};
if (pcap_handle) {
pcap_handle->write_ul_crnti_nr(mac_ul_sch_pdu_1, sizeof(mac_ul_sch_pdu_1), PCAP_CRNTI, true, PCAP_TTI);
}
srsran::mac_sch_pdu_nr pdu(true);
pdu.unpack(mac_ul_sch_pdu_1, sizeof(mac_ul_sch_pdu_1));
TESTASSERT(pdu.get_num_subpdus() == 0);
return SRSRAN_SUCCESS;
}
int mac_dl_sch_pdu_unpack_and_pack_test6()
{
// MAC PDU with UL-SCH: CRNTI, SE PHR, SBDR and padding
// CRNTI:0x4601 SE PHR:ph=63 pc=52 SBSR: lcg=6 bs=0 PAD: len=0
uint8_t tv[] = {0x3a, 0x46, 0x01, 0x39, 0x3f, 0x34, 0x3d, 0xc0, 0x3f};
const uint16_t TV_CRNTI = 0x4601;
const uint8_t TV_PHR = 63;
const uint8_t TV_PC = 52;
const uint8_t TV_LCG = 6;
const uint8_t TV_BUFF_SIZE = 0;
if (pcap_handle) {
pcap_handle->write_ul_crnti_nr(tv, sizeof(tv), PCAP_CRNTI, true, PCAP_TTI);
}
// Unpack TV
{
srsran::mac_sch_pdu_nr pdu_rx(true);
pdu_rx.unpack(tv, sizeof(tv));
TESTASSERT(pdu_rx.get_num_subpdus() == 4);
// 1st C-RNTI
mac_sch_subpdu_nr subpdu = pdu_rx.get_subpdu(0);
TESTASSERT(subpdu.get_total_length() == 3);
TESTASSERT(subpdu.get_sdu_length() == 2);
TESTASSERT(subpdu.get_lcid() == mac_sch_subpdu_nr::CRNTI);
TESTASSERT(subpdu.get_c_rnti() == TV_CRNTI);
// 2nd subPDU is SE PHR
subpdu = pdu_rx.get_subpdu(1);
TESTASSERT(subpdu.get_lcid() == mac_sch_subpdu_nr::SE_PHR);
TESTASSERT(subpdu.get_phr() == TV_PHR);
TESTASSERT(subpdu.get_pcmax() == TV_PC);
// 3rd subPDU is SBSR
subpdu = pdu_rx.get_subpdu(2);
TESTASSERT(subpdu.get_lcid() == mac_sch_subpdu_nr::SHORT_BSR);
mac_sch_subpdu_nr::lcg_bsr_t sbsr = subpdu.get_sbsr();
TESTASSERT(sbsr.lcg_id == TV_LCG);
TESTASSERT(sbsr.buffer_size == TV_BUFF_SIZE);
// 4th is padding
subpdu = pdu_rx.get_subpdu(3);
TESTASSERT(subpdu.get_lcid() == mac_sch_subpdu_nr::PADDING);
// pretty print PDU
fmt::memory_buffer buff;
pdu_rx.to_string(buff);
auto& mac_logger = srslog::fetch_basic_logger("MAC");
mac_logger.info("Rx PDU: %s", srsran::to_c_str(buff));
}
// Let's pack the entire PDU again
{
byte_buffer_t tx_buffer;
srsran::mac_sch_pdu_nr pdu_tx(true);
pdu_tx.init_tx(&tx_buffer, sizeof(tv), true); // same size as TV
TESTASSERT(pdu_tx.get_remaing_len() == 9);
TESTASSERT(pdu_tx.add_crnti_ce(TV_CRNTI) == SRSRAN_SUCCESS);
TESTASSERT(pdu_tx.get_remaing_len() == 6);
TESTASSERT(pdu_tx.add_se_phr_ce(TV_PHR, TV_PC) == SRSRAN_SUCCESS);
TESTASSERT(pdu_tx.get_remaing_len() == 3);
mac_sch_subpdu_nr::lcg_bsr_t sbsr = {};
sbsr.lcg_id = TV_LCG;
sbsr.buffer_size = TV_BUFF_SIZE;
TESTASSERT(pdu_tx.add_sbsr_ce(sbsr) == SRSRAN_SUCCESS);
TESTASSERT(pdu_tx.get_remaing_len() == 1);
// finish PDU packing
pdu_tx.pack();
// pretty print PDU
fmt::memory_buffer buff;
pdu_tx.to_string(buff);
auto& mac_logger = srslog::fetch_basic_logger("MAC");
mac_logger.info("Tx PDU: %s", srsran::to_c_str(buff));
// compare PDUs
TESTASSERT(tx_buffer.N_bytes == sizeof(tv));
TESTASSERT(memcmp(tx_buffer.msg, tv, tx_buffer.N_bytes) == 0);
if (pcap_handle) {
pcap_handle->write_ul_crnti_nr(tx_buffer.msg, tx_buffer.N_bytes, PCAP_CRNTI, true, PCAP_TTI);
}
}
return SRSRAN_SUCCESS;
}
int mac_ul_sch_pdu_unpack_test6()
{
// Malformed MAC PDU
uint8_t tv[] = {0x04, 0xe7, 0x00, 0x80, 0x04, 0x45, 0x00, 0x00, 0xe4, 0x4b, 0x9d, 0x40, 0x00, 0x40, 0x01, 0x69, 0x28,
0xc0, 0xa8, 0x02, 0x02, 0xc0, 0xa8, 0x02, 0x01, 0x08, 0x00, 0x3a, 0xbc, 0x65, 0x4a, 0x00, 0x01, 0x94,
0x85, 0x70, 0x60, 0x00, 0x00, 0x00, 0x00, 0xaa, 0x1b, 0x0e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x11,
0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f, 0x20, 0x21, 0x22,
0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33,
0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x44,
0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 0x52, 0x53, 0x54, 0x55,
0x56, 0x57, 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66,
0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77,
0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f, 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88,
0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97};
if (pcap_handle) {
pcap_handle->write_ul_crnti_nr(tv, sizeof(tv), PCAP_CRNTI, true, PCAP_TTI);
}
srsran::mac_sch_pdu_nr pdu(true);
TESTASSERT(pdu.unpack(tv, sizeof(tv)) == SRSRAN_ERROR);
return SRSRAN_SUCCESS;
}
int main(int argc, char** argv)
{
#if PCAP
pcap_handle = std::unique_ptr<srsran::mac_pcap>(new srsran::mac_pcap());
pcap_handle->open("mac_nr_pdu_test.pcap");
#endif
auto& mac_logger = srslog::fetch_basic_logger("MAC", false);
mac_logger.set_level(srslog::basic_levels::debug);
mac_logger.set_hex_dump_max_size(-1);
srslog::init();
if (mac_dl_sch_pdu_unpack_and_pack_test1()) {
fprintf(stderr, "mac_dl_sch_pdu_unpack_and_pack_test1() failed.\n");
return SRSRAN_ERROR;
}
if (mac_dl_sch_pdu_unpack_test2()) {
fprintf(stderr, "mac_dl_sch_pdu_unpack_test2() failed.\n");
return SRSRAN_ERROR;
}
if (mac_dl_sch_pdu_pack_test3()) {
fprintf(stderr, "mac_dl_sch_pdu_pack_test3() failed.\n");
return SRSRAN_ERROR;
}
if (mac_dl_sch_pdu_pack_test4()) {
fprintf(stderr, "mac_dl_sch_pdu_pack_test4() failed.\n");
return SRSRAN_ERROR;
}
if (mac_dl_sch_pdu_pack_test5()) {
fprintf(stderr, "mac_dl_sch_pdu_pack_test5() failed.\n");
return SRSRAN_ERROR;
}
if (mac_dl_sch_pdu_unpack_test6()) {
fprintf(stderr, "mac_dl_sch_pdu_unpack_test6() failed.\n");
return SRSRAN_ERROR;
}
if (mac_rar_pdu_test7()) {
fprintf(stderr, "mac_rar_pdu_unpack_test7() failed.\n");
return SRSRAN_ERROR;
}
if (mac_rar_pdu_unpack_test8()) {
fprintf(stderr, "mac_rar_pdu_unpack_test8() failed.\n");
return SRSRAN_ERROR;
}
if (mac_dl_sch_pdu_unpack_test9()) {
fprintf(stderr, "mac_dl_sch_pdu_unpack_test9() failed.\n");
return SRSRAN_ERROR;
}
if (mac_ul_sch_pdu_unpack_test1()) {
fprintf(stderr, "mac_ul_sch_pdu_unpack_test1() failed.\n");
return SRSRAN_ERROR;
}
if (mac_ul_sch_pdu_unpack_and_pack_test2()) {
fprintf(stderr, "mac_ul_sch_pdu_unpack_and_pack_test2() failed.\n");
return SRSRAN_ERROR;
}
if (mac_ul_sch_pdu_unpack_and_pack_test3()) {
fprintf(stderr, "mac_ul_sch_pdu_unpack_and_pack_test3() failed.\n");
return SRSRAN_ERROR;
}
if (mac_ul_sch_pdu_pack_test4()) {
fprintf(stderr, "mac_ul_sch_pdu_pack_test4() failed.\n");
return SRSRAN_ERROR;
}
if (mac_ul_sch_pdu_unpack_test5()) {
fprintf(stderr, "mac_ul_sch_pdu_unpack_test5() failed.\n");
return SRSRAN_ERROR;
}
if (mac_dl_sch_pdu_unpack_and_pack_test6()) {
fprintf(stderr, "mac_dl_sch_pdu_unpack_and_pack_test6() failed.\n");
return SRSRAN_ERROR;
}
if (mac_ul_sch_pdu_unpack_test6()) {
fprintf(stderr, "mac_ul_sch_pdu_unpack_test6() failed.\n");
return SRSRAN_ERROR;
}
if (pcap_handle) {
pcap_handle->close();
}
srslog::flush();
return SRSRAN_SUCCESS;
}
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