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348 lines
11 KiB
C++
348 lines
11 KiB
C++
/**
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* Copyright 2013-2021 Software Radio Systems Limited
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*
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* This file is part of srsRAN.
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*
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* srsRAN is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsRAN is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#include "srsran/config.h"
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#include "srsran/rlc/rlc.h"
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#include "srsran/rlc/rlc_am_nr.h"
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#include <array>
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#include <iostream>
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#include <memory>
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#include <vector>
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#define TESTASSERT(cond) \
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{ \
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if (!(cond)) { \
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std::cout << "[" << __FUNCTION__ << "][Line " << __LINE__ << "]: FAIL at " << (#cond) << std::endl; \
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return -1; \
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} \
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}
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#define PCAP 0
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#define PCAP_CRNTI (0x1001)
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#define PCAP_TTI (666)
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using namespace srsran;
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#if PCAP
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#include "srsran/common/mac_nr_pcap.h"
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#include "srsran/mac/mac_nr_pdu.h"
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static std::unique_ptr<srsran::mac_nr_pcap> pcap_handle = nullptr;
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#endif
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int write_pdu_to_pcap(const uint32_t lcid, const uint8_t* payload, const uint32_t len)
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{
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#if PCAP
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if (pcap_handle) {
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byte_buffer_t tx_buffer;
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srsran::mac_nr_sch_pdu tx_pdu;
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tx_pdu.init_tx(&tx_buffer, len + 10);
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tx_pdu.add_sdu(lcid, payload, len);
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tx_pdu.pack();
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pcap_handle->write_dl_crnti(tx_buffer.msg, tx_buffer.N_bytes, PCAP_CRNTI, true, PCAP_TTI);
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return SRSRAN_SUCCESS;
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}
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#endif
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return SRSRAN_ERROR;
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}
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template <std::size_t N>
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srsran::byte_buffer_t make_pdu_and_log(const std::array<uint8_t, N>& tv)
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{
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srsran::byte_buffer_t pdu;
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memcpy(pdu.msg, tv.data(), tv.size());
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pdu.N_bytes = tv.size();
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write_pdu_to_pcap(4, tv.data(), tv.size());
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return pdu;
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}
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void corrupt_pdu_header(srsran::byte_buffer_t& pdu, const uint32_t header_len, const uint32_t payload_len)
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{
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// clear header only
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for (uint32_t i = 0; i < header_len; i++) {
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pdu.msg[i] = 0xaa;
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}
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pdu.msg += header_len;
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pdu.N_bytes = payload_len;
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}
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// RLC AM PDU 12bit with complete SDU
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int rlc_am_nr_pdu_test1()
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{
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const int header_len = 2, payload_len = 4;
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std::array<uint8_t, header_len + payload_len> tv = {0x80, 0x00, 0x11, 0x22, 0x33, 0x44};
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srsran::byte_buffer_t pdu = make_pdu_and_log(tv);
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// unpack PDU
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rlc_am_nr_pdu_header_t header = {};
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TESTASSERT(rlc_am_nr_read_data_pdu_header(&pdu, srsran::rlc_am_nr_sn_size_t::size12bits, &header) != 0);
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TESTASSERT(header.si == rlc_nr_si_field_t::full_sdu);
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// clear header
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corrupt_pdu_header(pdu, header_len, payload_len);
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// pack again
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TESTASSERT(rlc_am_nr_write_data_pdu_header(header, &pdu) == header_len);
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TESTASSERT(pdu.N_bytes == tv.size());
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TESTASSERT(memcmp(pdu.msg, tv.data(), pdu.N_bytes) == 0);
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return SRSRAN_SUCCESS;
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}
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// RLC AM PDU 12bit first segment of SDU with P flag and SN 511
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int rlc_am_nr_pdu_test2()
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{
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const int header_len = 2, payload_len = 4;
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std::array<uint8_t, header_len + payload_len> tv = {0xd1, 0xff, 0x11, 0x22, 0x33, 0x44};
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srsran::byte_buffer_t pdu = make_pdu_and_log(tv);
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// unpack PDU
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rlc_am_nr_pdu_header_t header = {};
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TESTASSERT(rlc_am_nr_read_data_pdu_header(&pdu, srsran::rlc_am_nr_sn_size_t::size12bits, &header) != 0);
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TESTASSERT(header.si == rlc_nr_si_field_t::first_segment);
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TESTASSERT(header.sn == 511);
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TESTASSERT(header.so == 0);
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// clear header
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corrupt_pdu_header(pdu, header_len, payload_len);
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// pack again
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TESTASSERT(rlc_am_nr_write_data_pdu_header(header, &pdu) == header_len);
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TESTASSERT(pdu.N_bytes == tv.size());
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write_pdu_to_pcap(4, pdu.msg, pdu.N_bytes);
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TESTASSERT(memcmp(pdu.msg, tv.data(), pdu.N_bytes) == 0);
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return SRSRAN_SUCCESS;
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}
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// RLC AM PDU 12bit last segment of SDU without P flag and SN 0x0404 and SO 0x0404 (1028)
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int rlc_am_nr_pdu_test3()
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{
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const int header_len = 4, payload_len = 4;
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std::array<uint8_t, header_len + payload_len> tv = {0xa4, 0x04, 0x04, 0x04, 0x11, 0x22, 0x33, 0x44};
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srsran::byte_buffer_t pdu = make_pdu_and_log(tv);
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// unpack PDU
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rlc_am_nr_pdu_header_t header = {};
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TESTASSERT(rlc_am_nr_read_data_pdu_header(&pdu, srsran::rlc_am_nr_sn_size_t::size12bits, &header) != 0);
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TESTASSERT(header.si == rlc_nr_si_field_t::last_segment);
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TESTASSERT(header.sn == 1028);
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TESTASSERT(header.so == 1028);
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// clear header
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corrupt_pdu_header(pdu, header_len, payload_len);
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// pack again
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TESTASSERT(rlc_am_nr_write_data_pdu_header(header, &pdu) == header_len);
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TESTASSERT(pdu.N_bytes == tv.size());
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write_pdu_to_pcap(4, pdu.msg, pdu.N_bytes);
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TESTASSERT(memcmp(pdu.msg, tv.data(), pdu.N_bytes) == 0);
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return SRSRAN_SUCCESS;
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}
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// RLC AM PDU 18bit full SDU with P flag and SN 0x100000001000000010 (131586)
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int rlc_am_nr_pdu_test4()
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{
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const int header_len = 3, payload_len = 4;
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std::array<uint8_t, header_len + payload_len> tv = {0xc2, 0x02, 0x02, 0x11, 0x22, 0x33, 0x44};
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srsran::byte_buffer_t pdu = make_pdu_and_log(tv);
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// unpack PDU
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rlc_am_nr_pdu_header_t header = {};
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TESTASSERT(rlc_am_nr_read_data_pdu_header(&pdu, srsran::rlc_am_nr_sn_size_t::size18bits, &header) != 0);
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TESTASSERT(header.si == rlc_nr_si_field_t::full_sdu);
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TESTASSERT(header.sn == 131586);
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TESTASSERT(header.so == 0);
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// clear header
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corrupt_pdu_header(pdu, header_len, payload_len);
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// pack again
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TESTASSERT(rlc_am_nr_write_data_pdu_header(header, &pdu) == header_len);
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TESTASSERT(pdu.N_bytes == tv.size());
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write_pdu_to_pcap(4, pdu.msg, pdu.N_bytes);
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TESTASSERT(memcmp(pdu.msg, tv.data(), pdu.N_bytes) == 0);
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return SRSRAN_SUCCESS;
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}
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// RLC AM PDU 18bit middle part of SDU (SO 514) without P flag and SN 131327
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int rlc_am_nr_pdu_test5()
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{
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const int header_len = 5, payload_len = 4;
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std::array<uint8_t, header_len + payload_len> tv = {0xb2, 0x00, 0xff, 0x02, 0x02, 0x11, 0x22, 0x33, 0x44};
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srsran::byte_buffer_t pdu = make_pdu_and_log(tv);
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// unpack PDU
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rlc_am_nr_pdu_header_t header = {};
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TESTASSERT(rlc_am_nr_read_data_pdu_header(&pdu, srsran::rlc_am_nr_sn_size_t::size18bits, &header) != 0);
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TESTASSERT(header.si == rlc_nr_si_field_t::neither_first_nor_last_segment);
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TESTASSERT(header.sn == 131327);
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TESTASSERT(header.so == 514);
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// clear header
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corrupt_pdu_header(pdu, header_len, payload_len);
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// pack again
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TESTASSERT(rlc_am_nr_write_data_pdu_header(header, &pdu) == header_len);
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TESTASSERT(pdu.N_bytes == tv.size());
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write_pdu_to_pcap(4, pdu.msg, pdu.N_bytes);
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TESTASSERT(memcmp(pdu.msg, tv.data(), pdu.N_bytes) == 0);
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return SRSRAN_SUCCESS;
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}
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// Malformed RLC AM PDU 18bit with reserved bits set
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int rlc_am_nr_pdu_test6()
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{
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const int header_len = 5, payload_len = 4;
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std::array<uint8_t, header_len + payload_len> tv = {0xb7, 0x00, 0xff, 0x02, 0x02, 0x11, 0x22, 0x33, 0x44};
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srsran::byte_buffer_t pdu = make_pdu_and_log(tv);
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// unpack PDU
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rlc_am_nr_pdu_header_t header = {};
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TESTASSERT(rlc_am_nr_read_data_pdu_header(&pdu, srsran::rlc_am_nr_sn_size_t::size18bits, &header) == 0);
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TESTASSERT(header.sn == 0);
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return SRSRAN_SUCCESS;
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}
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///< Control PDU tests
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// Status PDU for 12bit SN with ACK_SN=2065 and no further NACK_SN (E1 bit not set)
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int rlc_am_nr_control_pdu_test1()
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{
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const int len = 3;
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std::array<uint8_t, len> tv = {0x08, 0x11, 0x00};
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srsran::byte_buffer_t pdu = make_pdu_and_log(tv);
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TESTASSERT(rlc_am_is_control_pdu(pdu.msg) == true);
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// unpack PDU
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rlc_am_nr_status_pdu_t status_pdu = {};
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TESTASSERT(rlc_am_nr_read_status_pdu(&pdu, srsran::rlc_am_nr_sn_size_t::size12bits, &status_pdu) == SRSRAN_SUCCESS);
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TESTASSERT(status_pdu.ack_sn == 2065);
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TESTASSERT(status_pdu.N_nack == 0);
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// reset status PDU
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pdu.clear();
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// pack again
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TESTASSERT(rlc_am_nr_write_status_pdu(status_pdu, srsran::rlc_am_nr_sn_size_t::size12bits, &pdu) == SRSRAN_SUCCESS);
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TESTASSERT(pdu.N_bytes == tv.size());
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write_pdu_to_pcap(4, pdu.msg, pdu.N_bytes);
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TESTASSERT(memcmp(pdu.msg, tv.data(), pdu.N_bytes) == 0);
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return SRSRAN_SUCCESS;
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}
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// Status PDU for 12bit SN with ACK_SN=2065 and NACK_SN=273 (E1 bit set)
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int rlc_am_nr_control_pdu_test2()
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{
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const int len = 5;
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std::array<uint8_t, len> tv = {0x08, 0x11, 0x80, 0x11, 0x10};
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srsran::byte_buffer_t pdu = make_pdu_and_log(tv);
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TESTASSERT(rlc_am_is_control_pdu(pdu.msg) == true);
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// unpack PDU
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rlc_am_nr_status_pdu_t status_pdu = {};
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TESTASSERT(rlc_am_nr_read_status_pdu(&pdu, srsran::rlc_am_nr_sn_size_t::size12bits, &status_pdu) == SRSRAN_SUCCESS);
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TESTASSERT(status_pdu.ack_sn == 2065);
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TESTASSERT(status_pdu.N_nack == 1);
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TESTASSERT(status_pdu.nacks[0].nack_sn == 273);
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// reset status PDU
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pdu.clear();
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// pack again
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TESTASSERT(rlc_am_nr_write_status_pdu(status_pdu, srsran::rlc_am_nr_sn_size_t::size12bits, &pdu) == SRSRAN_SUCCESS);
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// TESTASSERT(pdu.N_bytes == tv.size());
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write_pdu_to_pcap(4, pdu.msg, pdu.N_bytes);
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TESTASSERT(memcmp(pdu.msg, tv.data(), pdu.N_bytes) == 0);
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return SRSRAN_SUCCESS;
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}
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int main(int argc, char** argv)
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{
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#if PCAP
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pcap_handle = std::unique_ptr<srsran::mac_nr_pcap>(new srsran::mac_nr_pcap());
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pcap_handle->open("rlc_am_nr_pdu_test.pcap");
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#endif
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srslog::init();
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if (rlc_am_nr_pdu_test1()) {
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fprintf(stderr, "rlc_am_nr_pdu_test1() failed.\n");
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return SRSRAN_ERROR;
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}
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if (rlc_am_nr_pdu_test2()) {
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fprintf(stderr, "rlc_am_nr_pdu_test2() failed.\n");
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return SRSRAN_ERROR;
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}
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if (rlc_am_nr_pdu_test3()) {
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fprintf(stderr, "rlc_am_nr_pdu_test3() failed.\n");
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return SRSRAN_ERROR;
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}
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if (rlc_am_nr_pdu_test4()) {
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fprintf(stderr, "rlc_am_nr_pdu_test4() failed.\n");
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return SRSRAN_ERROR;
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}
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if (rlc_am_nr_pdu_test5()) {
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fprintf(stderr, "rlc_am_nr_pdu_test5() failed.\n");
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return SRSRAN_ERROR;
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}
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if (rlc_am_nr_pdu_test6()) {
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fprintf(stderr, "rlc_am_nr_pdu_test6() failed.\n");
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return SRSRAN_ERROR;
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}
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if (rlc_am_nr_control_pdu_test1()) {
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fprintf(stderr, "rlc_am_nr_control_pdu_test1() failed.\n");
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return SRSRAN_ERROR;
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}
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if (rlc_am_nr_control_pdu_test2()) {
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fprintf(stderr, "rlc_am_nr_control_pdu_test2() failed.\n");
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return SRSRAN_ERROR;
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}
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return SRSRAN_SUCCESS;
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}
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