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add RLC AM NR PDU packing/unpacking test

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master
Andre Puschmann 5 years ago
parent b32a4cf294
commit cea212b9f9
3 changed files with 285 additions and 4 deletions
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10
lib/src/upper/rlc_am_nr.cc
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@ -58,11 +58,13 @@ uint32_t rlc_am_nr_read_data_pdu_header(const uint8_t* payload,
ptr++;
} else if (sn_size == rlc_am_nr_sn_size_t::size18bits) {
// sanity check
if (header->sn > 3) {
if ((*ptr & 0x0c) != 0) {
fprintf(stderr, "Malformed PDU, reserved bits are set.\n");
return 0;
}
header->sn |= (*ptr & 0xFF); // bit 2-10 of SN
header->sn = (*ptr & 0x03) << 16; // first 4 bits SN
ptr++;
header->sn |= (*ptr & 0xFF) << 8; // bit 2-10 of SN
ptr++;
header->sn |= (*ptr & 0xFF); // last 8 bits SN
ptr++;
@ -123,9 +125,9 @@ uint32_t rlc_am_nr_write_data_pdu_header(const rlc_am_nr_pdu_header_t& header, b
ptr++;
} else {
// 18bit SN
*ptr |= (header.sn & 0x3); // 2 bit SN
*ptr |= (header.sn >> 16) & 0x3; // 2 bit SN
ptr++;
*ptr = (header.sn) >> 8; // bit 3 - 10 of SN
*ptr = header.sn >> 8; // bit 3 - 10 of SN
ptr++;
*ptr = (header.sn & 0xff); // remaining 8 bit of SN
ptr++;

4
lib/test/upper/CMakeLists.txt
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@ -30,6 +30,10 @@ add_executable(rlc_am_test rlc_am_test.cc)
target_link_libraries(rlc_am_test srslte_upper srslte_phy srslte_common)
add_test(rlc_am_test rlc_am_test)
add_executable(rlc_am_nr_pdu_test rlc_am_nr_pdu_test.cc)
target_link_libraries(rlc_am_nr_pdu_test srslte_upper srslte_phy)
add_test(rlc_am_nr_pdu_test rlc_am_nr_pdu_test)
add_executable(rlc_stress_test rlc_stress_test.cc)
target_link_libraries(rlc_stress_test srslte_upper srslte_phy srslte_common ${Boost_LIBRARIES})
add_test(rlc_am_stress_test rlc_stress_test --mode=AM --loglevel 1 --sdu_gen_delay 250)

275
lib/test/upper/rlc_am_nr_pdu_test.cc
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@ -0,0 +1,275 @@
/*
* Copyright 2013-2019 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 "srslte/config.h"
#include "srslte/upper/rlc.h"
#include "srslte/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 srslte;
#if PCAP
#include "srslte/common/mac_nr_pcap.h"
#include "srslte/common/mac_nr_pdu.h"
static std::unique_ptr<srslte::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;
srslte::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 SRSLTE_SUCCESS;
}
#endif
return SRSLTE_ERROR;
}
template <std::size_t N>
srslte::byte_buffer_t make_pdu_and_log(const std::array<uint8_t, N>& tv)
{
srslte::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(srslte::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};
srslte::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, srslte::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 SRSLTE_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};
srslte::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, srslte::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 SRSLTE_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};
srslte::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, srslte::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 SRSLTE_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};
srslte::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, srslte::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 SRSLTE_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};
srslte::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, srslte::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 SRSLTE_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};
srslte::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, srslte::rlc_am_nr_sn_size_t::size18bits, &header) == 0);
TESTASSERT(header.sn == 0);
return SRSLTE_SUCCESS;
}
int main(int argc, char** argv)
{
#if PCAP
pcap_handle = std::unique_ptr<srslte::mac_nr_pcap>(new srslte::mac_nr_pcap());
pcap_handle->open("rlc_am_nr_pdu_test.pcap");
#endif
if (rlc_am_nr_pdu_test1()) {
fprintf(stderr, "rlc_am_nr_pdu_test1() failed.\n");
return SRSLTE_ERROR;
}
if (rlc_am_nr_pdu_test2()) {
fprintf(stderr, "rlc_am_nr_pdu_test2() failed.\n");
return SRSLTE_ERROR;
}
if (rlc_am_nr_pdu_test3()) {
fprintf(stderr, "rlc_am_nr_pdu_test3() failed.\n");
return SRSLTE_ERROR;
}
if (rlc_am_nr_pdu_test4()) {
fprintf(stderr, "rlc_am_nr_pdu_test4() failed.\n");
return SRSLTE_ERROR;
}
if (rlc_am_nr_pdu_test5()) {
fprintf(stderr, "rlc_am_nr_pdu_test5() failed.\n");
return SRSLTE_ERROR;
}
if (rlc_am_nr_pdu_test6()) {
fprintf(stderr, "rlc_am_nr_pdu_test6() failed.\n");
return SRSLTE_ERROR;
}
return SRSLTE_SUCCESS;
}
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