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srsLTE
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srsLTE/lib/test/upper/rlc_am_nr_pdu_test.cc

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/**
*
* \section COPYRIGHT
*
* Copyright 2013-2021 Software Radio Systems Limited
*
* By using this file, you agree to the terms and conditions set
* forth in the LICENSE file which can be found at the top level of
* the distribution.
*
*/
#include "srsran/config.h"
#include "srsran/upper/rlc.h"
#include "srsran/upper/rlc_am_nr.h"
#include <array>
#include <iostream>
#include <memory>
#include <vector>
#define TESTASSERT(cond) \
{ \
if (!(cond)) { \
std::cout << "[" << __FUNCTION__ << "][Line " << __LINE__ << "]: FAIL at " << (#cond) << std::endl; \
return -1; \
} \
}
#define PCAP 0
#define PCAP_CRNTI (0x1001)
#define PCAP_TTI (666)
using namespace srsran;
#if PCAP
#include "srsran/common/mac_nr_pcap.h"
#include "srsran/mac/mac_nr_pdu.h"
static std::unique_ptr<srsran::mac_nr_pcap> pcap_handle = nullptr;
#endif
int write_pdu_to_pcap(const uint32_t lcid, const uint8_t* payload, const uint32_t len)
{
#if PCAP
if (pcap_handle) {
byte_buffer_t tx_buffer;
srsran::mac_nr_sch_pdu tx_pdu;
tx_pdu.init_tx(&tx_buffer, len + 10);
tx_pdu.add_sdu(lcid, payload, len);
tx_pdu.pack();
pcap_handle->write_dl_crnti(tx_buffer.msg, tx_buffer.N_bytes, PCAP_CRNTI, true, PCAP_TTI);
return SRSRAN_SUCCESS;
}
#endif
return SRSRAN_ERROR;
}
template <std::size_t N>
srsran::byte_buffer_t make_pdu_and_log(const std::array<uint8_t, N>& tv)
{
srsran::byte_buffer_t pdu;
memcpy(pdu.msg, tv.data(), tv.size());
pdu.N_bytes = tv.size();
write_pdu_to_pcap(4, tv.data(), tv.size());
return pdu;
}
void corrupt_pdu_header(srsran::byte_buffer_t& pdu, const uint32_t header_len, const uint32_t payload_len)
{
// clear header only
for (uint32_t i = 0; i < header_len; i++) {
pdu.msg[i] = 0xaa;
}
pdu.msg += header_len;
pdu.N_bytes = payload_len;
}
// RLC AM PDU 12bit with complete SDU
int rlc_am_nr_pdu_test1()
{
const int header_len = 2, payload_len = 4;
std::array<uint8_t, header_len + payload_len> tv = {0x80, 0x00, 0x11, 0x22, 0x33, 0x44};
srsran::byte_buffer_t pdu = make_pdu_and_log(tv);
// unpack PDU
rlc_am_nr_pdu_header_t header = {};
TESTASSERT(rlc_am_nr_read_data_pdu_header(&pdu, srsran::rlc_am_nr_sn_size_t::size12bits, &header) != 0);
TESTASSERT(header.si == rlc_nr_si_field_t::full_sdu);
// clear header
corrupt_pdu_header(pdu, header_len, payload_len);
// pack again
TESTASSERT(rlc_am_nr_write_data_pdu_header(header, &pdu) == header_len);
TESTASSERT(pdu.N_bytes == tv.size());
TESTASSERT(memcmp(pdu.msg, tv.data(), pdu.N_bytes) == 0);
return SRSRAN_SUCCESS;
}
// RLC AM PDU 12bit first segment of SDU with P flag and SN 511
int rlc_am_nr_pdu_test2()
{
const int header_len = 2, payload_len = 4;
std::array<uint8_t, header_len + payload_len> tv = {0xd1, 0xff, 0x11, 0x22, 0x33, 0x44};
srsran::byte_buffer_t pdu = make_pdu_and_log(tv);
// unpack PDU
rlc_am_nr_pdu_header_t header = {};
TESTASSERT(rlc_am_nr_read_data_pdu_header(&pdu, srsran::rlc_am_nr_sn_size_t::size12bits, &header) != 0);
TESTASSERT(header.si == rlc_nr_si_field_t::first_segment);
TESTASSERT(header.sn == 511);
TESTASSERT(header.so == 0);
// clear header
corrupt_pdu_header(pdu, header_len, payload_len);
// pack again
TESTASSERT(rlc_am_nr_write_data_pdu_header(header, &pdu) == header_len);
TESTASSERT(pdu.N_bytes == tv.size());
write_pdu_to_pcap(4, pdu.msg, pdu.N_bytes);
TESTASSERT(memcmp(pdu.msg, tv.data(), pdu.N_bytes) == 0);
return SRSRAN_SUCCESS;
}
// RLC AM PDU 12bit last segment of SDU without P flag and SN 0x0404 and SO 0x0404 (1028)
int rlc_am_nr_pdu_test3()
{
const int header_len = 4, payload_len = 4;
std::array<uint8_t, header_len + payload_len> tv = {0xa4, 0x04, 0x04, 0x04, 0x11, 0x22, 0x33, 0x44};
srsran::byte_buffer_t pdu = make_pdu_and_log(tv);
// unpack PDU
rlc_am_nr_pdu_header_t header = {};
TESTASSERT(rlc_am_nr_read_data_pdu_header(&pdu, srsran::rlc_am_nr_sn_size_t::size12bits, &header) != 0);
TESTASSERT(header.si == rlc_nr_si_field_t::last_segment);
TESTASSERT(header.sn == 1028);
TESTASSERT(header.so == 1028);
// clear header
corrupt_pdu_header(pdu, header_len, payload_len);
// pack again
TESTASSERT(rlc_am_nr_write_data_pdu_header(header, &pdu) == header_len);
TESTASSERT(pdu.N_bytes == tv.size());
write_pdu_to_pcap(4, pdu.msg, pdu.N_bytes);
TESTASSERT(memcmp(pdu.msg, tv.data(), pdu.N_bytes) == 0);
return SRSRAN_SUCCESS;
}
// RLC AM PDU 18bit full SDU with P flag and SN 0x100000001000000010 (131586)
int rlc_am_nr_pdu_test4()
{
const int header_len = 3, payload_len = 4;
std::array<uint8_t, header_len + payload_len> tv = {0xc2, 0x02, 0x02, 0x11, 0x22, 0x33, 0x44};
srsran::byte_buffer_t pdu = make_pdu_and_log(tv);
// unpack PDU
rlc_am_nr_pdu_header_t header = {};
TESTASSERT(rlc_am_nr_read_data_pdu_header(&pdu, srsran::rlc_am_nr_sn_size_t::size18bits, &header) != 0);
TESTASSERT(header.si == rlc_nr_si_field_t::full_sdu);
TESTASSERT(header.sn == 131586);
TESTASSERT(header.so == 0);
// clear header
corrupt_pdu_header(pdu, header_len, payload_len);
// pack again
TESTASSERT(rlc_am_nr_write_data_pdu_header(header, &pdu) == header_len);
TESTASSERT(pdu.N_bytes == tv.size());
write_pdu_to_pcap(4, pdu.msg, pdu.N_bytes);
TESTASSERT(memcmp(pdu.msg, tv.data(), pdu.N_bytes) == 0);
return SRSRAN_SUCCESS;
}
// RLC AM PDU 18bit middle part of SDU (SO 514) without P flag and SN 131327
int rlc_am_nr_pdu_test5()
{
const int header_len = 5, payload_len = 4;
std::array<uint8_t, header_len + payload_len> tv = {0xb2, 0x00, 0xff, 0x02, 0x02, 0x11, 0x22, 0x33, 0x44};
srsran::byte_buffer_t pdu = make_pdu_and_log(tv);
// unpack PDU
rlc_am_nr_pdu_header_t header = {};
TESTASSERT(rlc_am_nr_read_data_pdu_header(&pdu, srsran::rlc_am_nr_sn_size_t::size18bits, &header) != 0);
TESTASSERT(header.si == rlc_nr_si_field_t::neither_first_nor_last_segment);
TESTASSERT(header.sn == 131327);
TESTASSERT(header.so == 514);
// clear header
corrupt_pdu_header(pdu, header_len, payload_len);
// pack again
TESTASSERT(rlc_am_nr_write_data_pdu_header(header, &pdu) == header_len);
TESTASSERT(pdu.N_bytes == tv.size());
write_pdu_to_pcap(4, pdu.msg, pdu.N_bytes);
TESTASSERT(memcmp(pdu.msg, tv.data(), pdu.N_bytes) == 0);
return SRSRAN_SUCCESS;
}
// Malformed RLC AM PDU 18bit with reserved bits set
int rlc_am_nr_pdu_test6()
{
const int header_len = 5, payload_len = 4;
std::array<uint8_t, header_len + payload_len> tv = {0xb7, 0x00, 0xff, 0x02, 0x02, 0x11, 0x22, 0x33, 0x44};
srsran::byte_buffer_t pdu = make_pdu_and_log(tv);
// unpack PDU
rlc_am_nr_pdu_header_t header = {};
TESTASSERT(rlc_am_nr_read_data_pdu_header(&pdu, srsran::rlc_am_nr_sn_size_t::size18bits, &header) == 0);
TESTASSERT(header.sn == 0);
return SRSRAN_SUCCESS;
}
///< Control PDU tests
// Status PDU for 12bit SN with ACK_SN=2065 and no further NACK_SN (E1 bit not set)
int rlc_am_nr_control_pdu_test1()
{
const int len = 3;
std::array<uint8_t, len> tv = {0x08, 0x11, 0x00};
srsran::byte_buffer_t pdu = make_pdu_and_log(tv);
TESTASSERT(rlc_am_is_control_pdu(pdu.msg) == true);
// unpack PDU
rlc_am_nr_status_pdu_t status_pdu = {};
TESTASSERT(rlc_am_nr_read_status_pdu(&pdu, srsran::rlc_am_nr_sn_size_t::size12bits, &status_pdu) == SRSRAN_SUCCESS);
TESTASSERT(status_pdu.ack_sn == 2065);
TESTASSERT(status_pdu.N_nack == 0);
// reset status PDU
pdu.clear();
// pack again
TESTASSERT(rlc_am_nr_write_status_pdu(status_pdu, srsran::rlc_am_nr_sn_size_t::size12bits, &pdu) == SRSRAN_SUCCESS);
TESTASSERT(pdu.N_bytes == tv.size());
write_pdu_to_pcap(4, pdu.msg, pdu.N_bytes);
TESTASSERT(memcmp(pdu.msg, tv.data(), pdu.N_bytes) == 0);
return SRSRAN_SUCCESS;
}
// Status PDU for 12bit SN with ACK_SN=2065 and NACK_SN=273 (E1 bit set)
int rlc_am_nr_control_pdu_test2()
{
const int len = 5;
std::array<uint8_t, len> tv = {0x08, 0x11, 0x80, 0x11, 0x10};
srsran::byte_buffer_t pdu = make_pdu_and_log(tv);
TESTASSERT(rlc_am_is_control_pdu(pdu.msg) == true);
// unpack PDU
rlc_am_nr_status_pdu_t status_pdu = {};
TESTASSERT(rlc_am_nr_read_status_pdu(&pdu, srsran::rlc_am_nr_sn_size_t::size12bits, &status_pdu) == SRSRAN_SUCCESS);
TESTASSERT(status_pdu.ack_sn == 2065);
TESTASSERT(status_pdu.N_nack == 1);
TESTASSERT(status_pdu.nacks[0].nack_sn == 273);
// reset status PDU
pdu.clear();
// pack again
TESTASSERT(rlc_am_nr_write_status_pdu(status_pdu, srsran::rlc_am_nr_sn_size_t::size12bits, &pdu) == SRSRAN_SUCCESS);
// TESTASSERT(pdu.N_bytes == tv.size());
write_pdu_to_pcap(4, pdu.msg, pdu.N_bytes);
TESTASSERT(memcmp(pdu.msg, tv.data(), pdu.N_bytes) == 0);
return SRSRAN_SUCCESS;
}
int main(int argc, char** argv)
{
#if PCAP
pcap_handle = std::unique_ptr<srsran::mac_nr_pcap>(new srsran::mac_nr_pcap());
pcap_handle->open("rlc_am_nr_pdu_test.pcap");
#endif
srslog::init();
if (rlc_am_nr_pdu_test1()) {
fprintf(stderr, "rlc_am_nr_pdu_test1() failed.\n");
return SRSRAN_ERROR;
}
if (rlc_am_nr_pdu_test2()) {
fprintf(stderr, "rlc_am_nr_pdu_test2() failed.\n");
return SRSRAN_ERROR;
}
if (rlc_am_nr_pdu_test3()) {
fprintf(stderr, "rlc_am_nr_pdu_test3() failed.\n");
return SRSRAN_ERROR;
}
if (rlc_am_nr_pdu_test4()) {
fprintf(stderr, "rlc_am_nr_pdu_test4() failed.\n");
return SRSRAN_ERROR;
}
if (rlc_am_nr_pdu_test5()) {
fprintf(stderr, "rlc_am_nr_pdu_test5() failed.\n");
return SRSRAN_ERROR;
}
if (rlc_am_nr_pdu_test6()) {
fprintf(stderr, "rlc_am_nr_pdu_test6() failed.\n");
return SRSRAN_ERROR;
}
if (rlc_am_nr_control_pdu_test1()) {
fprintf(stderr, "rlc_am_nr_control_pdu_test1() failed.\n");
return SRSRAN_ERROR;
}
if (rlc_am_nr_control_pdu_test2()) {
fprintf(stderr, "rlc_am_nr_control_pdu_test2() failed.\n");
return SRSRAN_ERROR;
}
return SRSRAN_SUCCESS;
}
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