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srsLTE
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srsLTE/lib/test/upper/rlc_um_nr_test.cc

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/*
* 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 "rlc_test_common.h"
#include "srslte/common/log_filter.h"
#include "srslte/config.h"
#include "srslte/upper/rlc.h"
#include "srslte/upper/rlc_um.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::nr_mac_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;
}
// Basic test to write UM PDU with 6 bit SN
int rlc_um_nr_test1()
{
srslte::log_filter log1("RLC_UM_1");
srslte::log_filter log2("RLC_UM_2");
log1.set_level(srslte::LOG_LEVEL_DEBUG);
log2.set_level(srslte::LOG_LEVEL_DEBUG);
log1.set_hex_limit(-1);
log2.set_hex_limit(-1);
rlc_um_tester tester;
srslte::timers timers(16);
const uint32_t num_sdus = 5;
int len = 0;
rlc_um rlc1(&log1, 3, &tester, &tester, &timers);
rlc_um rlc2(&log2, 3, &tester, &tester, &timers);
rlc_config_t cnfg = rlc_config_t::default_rlc_um_nr_config(6);
TESTASSERT(rlc1.configure(cnfg) == true);
TESTASSERT(rlc2.configure(cnfg) == true);
tester.set_expected_sdu_len(1);
// Push 5 SDUs into RLC1
byte_buffer_pool* pool = byte_buffer_pool::get_instance();
unique_byte_buffer_t sdu_bufs[num_sdus];
for (uint32_t i = 0; i < num_sdus; i++) {
sdu_bufs[i] = srslte::allocate_unique_buffer(*pool, true);
*sdu_bufs[i]->msg = i; // Write the index into the buffer
sdu_bufs[i]->N_bytes = 1; // Give each buffer a size of 1 byte
rlc1.write_sdu(std::move(sdu_bufs[i]));
}
TESTASSERT(14 == rlc1.get_buffer_state());
// Read 5 PDUs from RLC1 (1 byte each)
unique_byte_buffer_t pdu_bufs[num_sdus];
for (uint32_t i = 0; i < num_sdus; i++) {
pdu_bufs[i] = srslte::allocate_unique_buffer(*pool, true);
len = rlc1.read_pdu(pdu_bufs[i]->msg, 4); // 3 bytes for header + payload
pdu_bufs[i]->N_bytes = len;
// write PCAP
write_pdu_to_pcap(4, pdu_bufs[i]->msg, pdu_bufs[i]->N_bytes);
}
TESTASSERT(0 == rlc1.get_buffer_state());
// TODO: add receive test
return SRSLTE_SUCCESS;
}
// Basic test for SDU segmentation
int rlc_um_nr_test2()
{
srslte::log_filter log1("RLC_UM_1");
srslte::log_filter log2("RLC_UM_2");
log1.set_level(srslte::LOG_LEVEL_DEBUG);
log2.set_level(srslte::LOG_LEVEL_DEBUG);
log1.set_hex_limit(-1);
log2.set_hex_limit(-1);
rlc_um_tester tester;
srslte::timers timers(16);
const uint32_t num_sdus = 1;
const uint32_t sdu_size = 100;
int len = 0;
rlc_um rlc1(&log1, 3, &tester, &tester, &timers);
rlc_um rlc2(&log2, 3, &tester, &tester, &timers);
rlc_config_t cnfg = rlc_config_t::default_rlc_um_nr_config(6);
TESTASSERT(rlc1.configure(cnfg) == true);
TESTASSERT(rlc2.configure(cnfg) == true);
tester.set_expected_sdu_len(1);
// Push SDUs into RLC1
byte_buffer_pool* pool = byte_buffer_pool::get_instance();
unique_byte_buffer_t sdu_bufs[num_sdus];
for (uint32_t i = 0; i < num_sdus; i++) {
sdu_bufs[i] = srslte::allocate_unique_buffer(*pool, true);
// Write the index into the buffer
for (uint32_t k = 0; k < sdu_size; ++k) {
sdu_bufs[i]->msg[k] = i;
}
sdu_bufs[i]->N_bytes = sdu_size;
rlc1.write_sdu(std::move(sdu_bufs[i]));
}
// FIXME: check buffer state calculation
TESTASSERT(103 == rlc1.get_buffer_state());
// Read PDUs from RLC1 with grant of 25 Bytes each
const uint32_t max_num_pdus = 10;
unique_byte_buffer_t pdu_bufs[max_num_pdus];
for (uint32_t i = 0; i < max_num_pdus; i++) {
pdu_bufs[i] = srslte::allocate_unique_buffer(*pool, true);
len = rlc1.read_pdu(pdu_bufs[i]->msg, 25); // 3 bytes for header + payload
pdu_bufs[i]->N_bytes = len;
// write PCAP
write_pdu_to_pcap(4, pdu_bufs[i]->msg, pdu_bufs[i]->N_bytes);
}
TESTASSERT(0 == rlc1.get_buffer_state());
// TODO: add receive test
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_um_nr_test.pcap");
#endif
if (rlc_um_nr_test1()) {
fprintf(stderr, "rlc_um_nr_test1() failed.\n");
return SRSLTE_ERROR;
}
if (rlc_um_nr_test2()) {
fprintf(stderr, "rlc_um_nr_test2() failed.\n");
return SRSLTE_ERROR;
}
return SRSLTE_SUCCESS;
}
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