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2141 lines
64 KiB
C++
2141 lines
64 KiB
C++
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* By using this file, you agree to the terms and conditions set
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* forth in the LICENSE file which can be found at the top level of
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* the distribution.
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*
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*/
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#include "srslte/common/log_filter.h"
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#include "srslte/common/rlc_pcap.h"
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#include "srslte/common/test_common.h"
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#include "srslte/common/threads.h"
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#include "srslte/upper/rlc_am_lte.h"
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#include <iostream>
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#define NBUFS 5
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#define HAVE_PCAP 0
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#define SDU_SIZE 500
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using namespace srsue;
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using namespace srslte;
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bool rx_is_tx(const rlc_bearer_metrics_t& rlc1_metrics, const rlc_bearer_metrics_t& rlc2_metrics)
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{
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if (rlc1_metrics.num_tx_pdu_bytes != rlc2_metrics.num_rx_pdu_bytes) {
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return false;
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}
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if (rlc2_metrics.num_tx_pdu_bytes != rlc1_metrics.num_rx_pdu_bytes) {
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return false;
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}
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return true;
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}
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class rlc_am_tester : public pdcp_interface_rlc, public rrc_interface_rlc
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{
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public:
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rlc_am_tester(rlc_pcap* pcap_ = NULL)
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{
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n_sdus = 0;
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pcap = pcap_;
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}
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// PDCP interface
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void write_pdu(uint32_t lcid, unique_byte_buffer_t sdu)
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{
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assert(lcid == 1);
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sdus[n_sdus++] = std::move(sdu);
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}
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void write_pdu_bcch_bch(unique_byte_buffer_t sdu) {}
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void write_pdu_bcch_dlsch(unique_byte_buffer_t sdu) {}
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void write_pdu_pcch(unique_byte_buffer_t sdu) {}
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void write_pdu_mch(uint32_t lcid, srslte::unique_byte_buffer_t pdu) {}
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void notify_delivery(uint32_t lcid, const std::vector<uint32_t>& pdcp_sn_vec)
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{
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assert(lcid == 1);
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for (uint32_t pdcp_sn : pdcp_sn_vec) {
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if (notified_counts.find(pdcp_sn) == notified_counts.end()) {
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notified_counts[pdcp_sn] = 0;
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}
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notified_counts[pdcp_sn] += 1;
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}
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}
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// RRC interface
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void max_retx_attempted() {}
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std::string get_rb_name(uint32_t lcid) { return std::string(""); }
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unique_byte_buffer_t sdus[10];
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int n_sdus;
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rlc_pcap* pcap;
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std::map<uint32_t, uint32_t> notified_counts; // Map of PDCP SNs to number of notifications
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};
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class ul_writer : public thread
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{
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public:
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ul_writer(rlc_am_lte* rlc_) : rlc(rlc_), running(false), thread("UL_WRITER") {}
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~ul_writer() { stop(); }
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void stop()
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{
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running = false;
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int cnt = 0;
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while (running && cnt < 100) {
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usleep(10000);
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cnt++;
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}
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wait_thread_finish();
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}
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private:
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void run_thread()
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{
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int sn = 0;
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running = true;
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while (running) {
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unique_byte_buffer_t pdu = srslte::make_byte_buffer();
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if (!pdu) {
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printf("Error: Could not allocate PDU in rlc_tester::run_thread\n\n\n");
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// backoff for a bit
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usleep(1000);
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continue;
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}
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for (uint32_t i = 0; i < SDU_SIZE; i++) {
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pdu->msg[i] = sn;
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}
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sn++;
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pdu->N_bytes = SDU_SIZE;
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rlc->write_sdu(std::move(pdu));
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}
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running = false;
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}
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rlc_am_lte* rlc;
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bool running;
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};
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int basic_test_tx(rlc_am_lte* rlc, byte_buffer_t pdu_bufs[NBUFS])
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{
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// Push 5 SDUs into RLC1
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unique_byte_buffer_t sdu_bufs[NBUFS];
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for (int i = 0; i < NBUFS; i++) {
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sdu_bufs[i] = srslte::make_byte_buffer();
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sdu_bufs[i]->msg[0] = i; // Write the index into the buffer
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sdu_bufs[i]->N_bytes = 1; // Give each buffer a size of 1 byte
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sdu_bufs[i]->md.pdcp_sn = i; // PDCP SN for notifications
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rlc->write_sdu(std::move(sdu_bufs[i]));
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}
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TESTASSERT(13 == rlc->get_buffer_state()); // 2 Bytes for fixed header + 6 for LIs + 5 for payload
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// Read 5 PDUs from RLC1 (1 byte each)
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for (int i = 0; i < NBUFS; i++) {
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uint32_t len = rlc->read_pdu(pdu_bufs[i].msg, 3); // 2 bytes for header + 1 byte payload
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pdu_bufs[i].N_bytes = len;
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TESTASSERT(3 == len);
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}
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TESTASSERT(0 == rlc->get_buffer_state());
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return SRSLTE_SUCCESS;
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}
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int basic_test()
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{
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rlc_am_tester tester;
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timer_handler timers(8);
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byte_buffer_t pdu_bufs[NBUFS];
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rlc_am_lte rlc1(srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
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rlc_am_lte rlc2(srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
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// before configuring entity
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TESTASSERT(0 == rlc1.get_buffer_state());
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if (not rlc1.configure(rlc_config_t::default_rlc_am_config())) {
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return -1;
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}
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if (not rlc2.configure(rlc_config_t::default_rlc_am_config())) {
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return -1;
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}
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basic_test_tx(&rlc1, pdu_bufs);
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// Write 5 PDUs into RLC2
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for (int i = 0; i < NBUFS; i++) {
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rlc2.write_pdu(pdu_bufs[i].msg, pdu_bufs[i].N_bytes);
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}
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TESTASSERT(2 == rlc2.get_buffer_state());
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// Read status PDU from RLC2
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byte_buffer_t status_buf;
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int len = rlc2.read_pdu(status_buf.msg, 2);
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status_buf.N_bytes = len;
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TESTASSERT(0 == rlc2.get_buffer_state());
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// Assert status is correct
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rlc_status_pdu_t status_check = {};
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rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
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TESTASSERT(status_check.ack_sn == 5); // 5 is the last SN that was not received.
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// Write status PDU to RLC1
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rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
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// Check PDCP notifications
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TESTASSERT(tester.notified_counts.size() == 5);
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for (uint16_t i = 0; i < tester.n_sdus; i++) {
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TESTASSERT(tester.sdus[i]->N_bytes == 1);
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TESTASSERT(*(tester.sdus[i]->msg) == i);
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TESTASSERT(tester.notified_counts[i] == 1);
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}
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// Check statistics
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TESTASSERT(rx_is_tx(rlc1.get_metrics(), rlc2.get_metrics()));
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return SRSLTE_SUCCESS;
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}
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int concat_test()
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{
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rlc_am_tester tester;
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srslte::timer_handler timers(8);
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rlc_am_lte rlc1(srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
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rlc_am_lte rlc2(srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
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if (not rlc1.configure(rlc_config_t::default_rlc_am_config())) {
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return -1;
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}
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if (not rlc2.configure(rlc_config_t::default_rlc_am_config())) {
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return -1;
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}
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// Push 5 SDUs into RLC1
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unique_byte_buffer_t sdu_bufs[NBUFS];
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for (int i = 0; i < NBUFS; i++) {
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sdu_bufs[i] = srslte::make_byte_buffer();
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sdu_bufs[i]->msg[0] = i; // Write the index into the buffer
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sdu_bufs[i]->N_bytes = 1; // Give each buffer a size of 1 byte
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sdu_bufs[i]->md.pdcp_sn = i; // PDCP SN for notifications
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rlc1.write_sdu(std::move(sdu_bufs[i]));
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}
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TESTASSERT(13 == rlc1.get_buffer_state()); // 2 Bytes for fixed header + 6 for LIs + 5 for payload
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// Read 1 PDUs from RLC1 containing all 5 SDUs
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byte_buffer_t pdu_buf;
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int len = rlc1.read_pdu(pdu_buf.msg, 13); // 8 bytes for header + payload
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pdu_buf.N_bytes = len;
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TESTASSERT(0 == rlc1.get_buffer_state());
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// Write PDU into RLC2
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rlc2.write_pdu(pdu_buf.msg, pdu_buf.N_bytes);
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// Check status report
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TESTASSERT(2 == rlc2.get_buffer_state());
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byte_buffer_t status_buf;
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len = rlc2.read_pdu(status_buf.msg, 2);
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status_buf.N_bytes = len;
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TESTASSERT(0 == rlc2.get_buffer_state());
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// Assert status is correct
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rlc_status_pdu_t status_check = {};
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rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
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TESTASSERT(status_check.ack_sn == 1); // 1 is the last SN that was not received.
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// Write status PDU to RLC1
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rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
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TESTASSERT(tester.n_sdus == 5);
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for (int i = 0; i < tester.n_sdus; i++) {
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TESTASSERT(tester.sdus[i]->N_bytes == 1);
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TESTASSERT(*(tester.sdus[i]->msg) == i);
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}
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// Check PDCP notifications
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TESTASSERT(tester.notified_counts.size() == 5);
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for (uint16_t i = 0; i < tester.n_sdus; i++) {
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TESTASSERT(tester.sdus[i]->N_bytes == 1);
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TESTASSERT(*(tester.sdus[i]->msg) == i);
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TESTASSERT(tester.notified_counts[i] == 1);
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}
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// Check statistics
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TESTASSERT(rx_is_tx(rlc1.get_metrics(), rlc2.get_metrics()));
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return SRSLTE_SUCCESS;
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}
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int segment_test(bool in_seq_rx)
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{
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rlc_am_tester tester;
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srslte::timer_handler timers(8);
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int len = 0;
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rlc_am_lte rlc1(srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
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rlc_am_lte rlc2(srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
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if (not rlc1.configure(rlc_config_t::default_rlc_am_config())) {
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return -1;
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}
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if (not rlc2.configure(rlc_config_t::default_rlc_am_config())) {
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return -1;
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}
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// Push 5 SDUs into RLC1
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unique_byte_buffer_t sdu_bufs[NBUFS];
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for (int i = 0; i < NBUFS; i++) {
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sdu_bufs[i] = srslte::make_byte_buffer();
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for (int j = 0; j < 10; j++)
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sdu_bufs[i]->msg[j] = j;
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sdu_bufs[i]->N_bytes = 10; // Give each buffer a size of 10 bytes
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sdu_bufs[i]->md.pdcp_sn = i; // PDCP SN for notifications
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rlc1.write_sdu(std::move(sdu_bufs[i]));
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}
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TESTASSERT(58 == rlc1.get_buffer_state()); // 2 bytes for header + 6 bytes for LI + 50 bytes for payload
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// Read PDUs from RLC1 (force segmentation)
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byte_buffer_t pdu_bufs[20];
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int n_pdus = 0;
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while (rlc1.get_buffer_state() > 0) {
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len = rlc1.read_pdu(pdu_bufs[n_pdus].msg, 10); // 2 header + payload
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pdu_bufs[n_pdus++].N_bytes = len;
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}
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TESTASSERT(0 == rlc1.get_buffer_state());
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// Write PDUs into RLC2
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if (in_seq_rx) {
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// deliver PDUs in order
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for (int i = 0; i < n_pdus; ++i) {
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rlc2.write_pdu(pdu_bufs[i].msg, pdu_bufs[i].N_bytes);
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}
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} else {
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// deliver PDUs in reverse order
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for (int i = n_pdus - 1; i >= 0; --i) {
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rlc2.write_pdu(pdu_bufs[i].msg, pdu_bufs[i].N_bytes);
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}
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}
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// Receiver will only generate status PDU if they arrive in order
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// If SN=7 arrives first, but the Rx expects SN=0, status reporting will be delayed, see TS 36.322 v10 Section 5.2.3
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if (in_seq_rx) {
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TESTASSERT(2 == rlc2.get_buffer_state());
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// Read status PDU from RLC2
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byte_buffer_t status_buf;
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len = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
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status_buf.N_bytes = len;
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// Assert status is correct
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rlc_status_pdu_t status_check = {};
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rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
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TESTASSERT(status_check.ack_sn == n_pdus); // n_pdus (8) is the last SN that was not received.
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// Write status PDU to RLC1
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rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
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// Check all notification of ack'ed PDUs
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TESTASSERT(tester.notified_counts.size() == 5);
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for (int i = 0; i < NBUFS; i++) {
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auto not_it = tester.notified_counts.find(i);
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TESTASSERT(not_it != tester.notified_counts.end() && tester.notified_counts[i] == 1);
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}
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}
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TESTASSERT(0 == rlc2.get_buffer_state());
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TESTASSERT(tester.n_sdus == 5);
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for (int i = 0; i < tester.n_sdus; i++) {
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TESTASSERT(tester.sdus[i]->N_bytes == 10);
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for (int j = 0; j < 10; j++)
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TESTASSERT(tester.sdus[i]->msg[j] == j);
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}
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// Check statistics
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TESTASSERT(rx_is_tx(rlc1.get_metrics(), rlc2.get_metrics()));
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return SRSLTE_SUCCESS;
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}
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int retx_test()
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{
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rlc_am_tester tester;
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timer_handler timers(8);
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int len = 0;
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rlc_am_lte rlc1(srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
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rlc_am_lte rlc2(srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
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if (not rlc1.configure(rlc_config_t::default_rlc_am_config())) {
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return -1;
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}
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if (not rlc2.configure(rlc_config_t::default_rlc_am_config())) {
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return -1;
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}
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// Push 5 SDUs into RLC1
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unique_byte_buffer_t sdu_bufs[NBUFS];
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for (int i = 0; i < NBUFS; i++) {
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sdu_bufs[i] = srslte::make_byte_buffer();
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sdu_bufs[i]->msg[0] = i; // Write the index into the buffer
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sdu_bufs[i]->N_bytes = 1; // Give each buffer a size of 1 byte
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sdu_bufs[i]->md.pdcp_sn = i; // PDCP SN for notifications
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rlc1.write_sdu(std::move(sdu_bufs[i]));
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}
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TESTASSERT(13 == rlc1.get_buffer_state());
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// Read 5 PDUs from RLC1 (1 byte each)
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byte_buffer_t pdu_bufs[NBUFS];
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for (int i = 0; i < NBUFS; i++) {
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len = rlc1.read_pdu(pdu_bufs[i].msg, 3); // 2 byte header + 1 byte payload
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pdu_bufs[i].N_bytes = len;
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}
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TESTASSERT(0 == rlc1.get_buffer_state());
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// Write PDUs into RLC2 (skip SN 1)
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for (int i = 0; i < NBUFS; i++) {
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if (i != 1)
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rlc2.write_pdu(pdu_bufs[i].msg, pdu_bufs[i].N_bytes);
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}
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// check buffered bytes at receiver, 3 PDUs with one 1 B each (SN=0 has been delivered already)
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rlc_bearer_metrics_t metrics = rlc2.get_metrics();
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TESTASSERT(metrics.rx_buffered_bytes == 3);
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// Step timers until reordering timeout expires
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for (int cnt = 0; cnt < 5; cnt++) {
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timers.step_all();
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}
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uint32_t buffer_state = rlc2.get_buffer_state();
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TESTASSERT(4 == buffer_state);
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// Read status PDU from RLC2
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byte_buffer_t status_buf;
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len = rlc2.read_pdu(status_buf.msg, buffer_state); // provide exactly the reported buffer state
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status_buf.N_bytes = len;
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// Assert all bytes for status PDU were read
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buffer_state = rlc2.get_buffer_state();
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TESTASSERT(0 == buffer_state);
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// Assert status is correct
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rlc_status_pdu_t status_check = {};
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rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
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TESTASSERT(status_check.N_nack == 1); // 1 packet was lost.
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TESTASSERT(status_check.nacks[0].nack_sn == 1); // SN 1 was lost.
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TESTASSERT(status_check.ack_sn == 5); // Delivered up to SN 4.
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// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
|
|
TESTASSERT(3 == rlc1.get_buffer_state()); // 2 byte header + 1 byte payload
|
|
|
|
// Check notifications of ack'ed PDUs
|
|
TESTASSERT(tester.notified_counts.size() == 4);
|
|
for (int i = 0; i < NBUFS; i++) {
|
|
auto not_it = tester.notified_counts.find(i);
|
|
if (i != 1) {
|
|
TESTASSERT(not_it != tester.notified_counts.end() && tester.notified_counts[i] == 1);
|
|
} else {
|
|
TESTASSERT(not_it == tester.notified_counts.end());
|
|
}
|
|
}
|
|
|
|
// Read the retx PDU from RLC1
|
|
byte_buffer_t retx;
|
|
len = rlc1.read_pdu(retx.msg, 3); // 2 byte header + 1 byte payload
|
|
retx.N_bytes = len;
|
|
|
|
// Write the retx PDU to RLC2
|
|
rlc2.write_pdu(retx.msg, retx.N_bytes);
|
|
|
|
TESTASSERT(tester.n_sdus == 5);
|
|
for (int i = 0; i < tester.n_sdus; i++) {
|
|
if (tester.sdus[i]->N_bytes != 1)
|
|
return -1;
|
|
if (*(tester.sdus[i]->msg) != i)
|
|
return -1;
|
|
}
|
|
|
|
// Step timers until poll Retx timeout expires
|
|
for (int cnt = 0; cnt < 5; cnt++) {
|
|
timers.step_all();
|
|
}
|
|
|
|
// Get status report of RETX PDU
|
|
buffer_state = rlc2.get_buffer_state();
|
|
TESTASSERT(2 == buffer_state);
|
|
len = rlc2.read_pdu(status_buf.msg, buffer_state); // provide exactly the reported buffer state
|
|
status_buf.N_bytes = len;
|
|
|
|
// Assert status is correct
|
|
status_check = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
|
|
TESTASSERT(status_check.N_nack == 0); // No packet was lost.
|
|
TESTASSERT(status_check.ack_sn == 5); // Delivered up to SN 4.
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
|
|
// Check all notification of ack'ed PDUs
|
|
TESTASSERT(tester.notified_counts.size() == 5);
|
|
for (int i = 0; i < NBUFS; i++) {
|
|
auto not_it = tester.notified_counts.find(i);
|
|
TESTASSERT(not_it != tester.notified_counts.end() && tester.notified_counts[i] == 1);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
// Purpose: test correct retx of lost segment and pollRetx timer expiration
|
|
int segment_retx_test()
|
|
{
|
|
rlc_am_tester tester;
|
|
timer_handler timers(8);
|
|
int len = 0;
|
|
|
|
rlc_am_lte rlc1(srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
|
|
rlc_am_lte rlc2(srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
|
|
|
|
if (not rlc1.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
if (not rlc2.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
// Push SDU(s) into RLC1
|
|
const uint32_t nof_sdus = 1; // just one SDU to make sure the transmitter sets polling bit
|
|
unique_byte_buffer_t sdu_bufs[nof_sdus];
|
|
|
|
for (uint32_t i = 0; i < nof_sdus; i++) {
|
|
sdu_bufs[i] = srslte::make_byte_buffer();
|
|
sdu_bufs[i]->N_bytes = 10; // Give each buffer a size of 10 bytes
|
|
std::fill(sdu_bufs[i]->msg, sdu_bufs[i]->msg + sdu_bufs[i]->N_bytes, 0);
|
|
sdu_bufs[i]->msg[0] = i; // Write the index into the buffer
|
|
rlc1.write_sdu(std::move(sdu_bufs[i]));
|
|
}
|
|
|
|
// Read 2 PDUs from RLC1
|
|
const uint32_t nof_pdus = 2;
|
|
byte_buffer_t pdu_bufs[nof_pdus];
|
|
for (uint32_t i = 0; i < nof_pdus; i++) {
|
|
len = rlc1.read_pdu(pdu_bufs[i].msg, 7); // 2 byte header
|
|
pdu_bufs[i].N_bytes = len;
|
|
}
|
|
|
|
TESTASSERT(rlc1.get_buffer_state() == 0);
|
|
|
|
// Step timers until poll Retx timeout expires
|
|
for (int cnt = 0; cnt < 5; cnt++) {
|
|
timers.step_all();
|
|
}
|
|
|
|
uint32_t buffer_state = rlc1.get_buffer_state();
|
|
TESTASSERT(buffer_state == 7);
|
|
|
|
// Read retx PDU from RLC1
|
|
byte_buffer_t retx_pdu;
|
|
len = rlc1.read_pdu(retx_pdu.msg, buffer_state); // provide exactly the reported buffer state
|
|
retx_pdu.N_bytes = len;
|
|
|
|
// Write retx segment to RLC2
|
|
rlc2.write_pdu(retx_pdu.msg, retx_pdu.N_bytes);
|
|
|
|
buffer_state = rlc2.get_buffer_state(); // Status PDU
|
|
TESTASSERT(buffer_state == 2);
|
|
|
|
// Read status PDU from RLC2
|
|
byte_buffer_t status_buf;
|
|
len = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
status_buf.N_bytes = len;
|
|
|
|
// Assert status is correct
|
|
rlc_status_pdu_t status_check = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
|
|
TESTASSERT(status_check.N_nack == 0); // No packet was lost.
|
|
TESTASSERT(status_check.ack_sn == 1); // Delivered up to SN 0.
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
|
|
// Make sure no notifications yet
|
|
TESTASSERT(tester.notified_counts.size() == 0);
|
|
|
|
// Step timers again until poll Retx timeout expires
|
|
for (int cnt = 0; cnt < 5; cnt++) {
|
|
timers.step_all();
|
|
}
|
|
|
|
// read buffer state from RLC1 again to see if it has rescheduled SN=1 for retx
|
|
buffer_state = rlc1.get_buffer_state(); // Status PDU
|
|
TESTASSERT(buffer_state == 7);
|
|
|
|
// Read 2nd retx PDU from RLC1
|
|
byte_buffer_t retx_pdu2;
|
|
len = rlc1.read_pdu(retx_pdu2.msg, buffer_state); // provide exactly the reported buffer state
|
|
retx_pdu2.N_bytes = len;
|
|
|
|
// Write retx segment to RLC2
|
|
rlc2.write_pdu(retx_pdu2.msg, retx_pdu2.N_bytes);
|
|
|
|
// read Status PDU from RLC2 again
|
|
len = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
status_buf.N_bytes = len;
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
|
|
// Assert status is correct
|
|
status_check = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
|
|
TESTASSERT(status_check.N_nack == 0); // No packet was lost.
|
|
TESTASSERT(status_check.ack_sn == 2); // Delivered up to SN 0.
|
|
|
|
// Make sure SDU was notified
|
|
TESTASSERT(tester.notified_counts.size() == 1);
|
|
TESTASSERT(tester.notified_counts.find(0) != tester.notified_counts.end() && tester.notified_counts[0] == 1);
|
|
|
|
TESTASSERT(tester.n_sdus == nof_sdus);
|
|
for (int i = 0; i < tester.n_sdus; i++) {
|
|
if (tester.sdus[i]->N_bytes != 10) {
|
|
return SRSLTE_ERROR;
|
|
}
|
|
if (*(tester.sdus[i]->msg) != i) {
|
|
return SRSLTE_ERROR;
|
|
}
|
|
}
|
|
|
|
return SRSLTE_SUCCESS;
|
|
}
|
|
|
|
int resegment_test_1()
|
|
{
|
|
// SDUs: | 10 | 10 | 10 | 10 | 10 |
|
|
// PDUs: | 10 | 10 | 10 | 10 | 10 |
|
|
// Retx PDU segments: | 5 | 5|
|
|
|
|
rlc_am_tester tester;
|
|
timer_handler timers(8);
|
|
int len = 0;
|
|
|
|
rlc_am_lte rlc1(srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
|
|
rlc_am_lte rlc2(srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
|
|
|
|
if (not rlc1.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
if (not rlc2.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
// Push 5 SDUs into RLC1
|
|
unique_byte_buffer_t sdu_bufs[NBUFS];
|
|
for (int i = 0; i < NBUFS; i++) {
|
|
sdu_bufs[i] = srslte::make_byte_buffer();
|
|
for (int j = 0; j < 10; j++)
|
|
sdu_bufs[i]->msg[j] = j;
|
|
sdu_bufs[i]->N_bytes = 10; // Give each buffer a size of 10 bytes
|
|
sdu_bufs[i]->md.pdcp_sn = i;
|
|
rlc1.write_sdu(std::move(sdu_bufs[i]));
|
|
}
|
|
|
|
TESTASSERT(58 == rlc1.get_buffer_state()); // 2 bytes for fixed header, 6 bytes for LIs, 50 bytes for data
|
|
|
|
// Read 5 PDUs from RLC1 (10 bytes each)
|
|
byte_buffer_t pdu_bufs[NBUFS];
|
|
for (int i = 0; i < NBUFS; i++) {
|
|
len = rlc1.read_pdu(pdu_bufs[i].msg, 12); // 12 bytes for header + payload
|
|
pdu_bufs[i].N_bytes = len;
|
|
}
|
|
|
|
TESTASSERT(0 == rlc1.get_buffer_state());
|
|
|
|
// Write PDUs into RLC2 (skip SN 1)
|
|
for (int i = 0; i < NBUFS; i++) {
|
|
if (i != 1)
|
|
rlc2.write_pdu(pdu_bufs[i].msg, pdu_bufs[i].N_bytes);
|
|
}
|
|
|
|
// Step timers until reordering timeout expires
|
|
for (int cnt = 0; cnt < 5; cnt++) {
|
|
timers.step_all();
|
|
}
|
|
|
|
TESTASSERT(4 == rlc2.get_buffer_state());
|
|
|
|
// Read status PDU from RLC2
|
|
byte_buffer_t status_buf;
|
|
len = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
status_buf.N_bytes = len;
|
|
|
|
// Assert status is correct
|
|
rlc_status_pdu_t status_check = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
|
|
TESTASSERT(status_check.N_nack == 1); // 1 packet was lost.
|
|
TESTASSERT(status_check.nacks[0].nack_sn == 1); // SN 1 was lost.
|
|
TESTASSERT(status_check.ack_sn == 5); // Delivered up to SN 5.
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
|
|
TESTASSERT(12 == rlc1.get_buffer_state()); // 2 byte header + 10 data
|
|
|
|
// Check notifications
|
|
srslog::fetch_basic_logger("RLC_AM_1").debug("%ld", tester.notified_counts.size());
|
|
TESTASSERT(tester.notified_counts.size() == 4);
|
|
for (int i = 0; i < 5; i++) {
|
|
auto it = tester.notified_counts.find(i);
|
|
if (i != 1) {
|
|
TESTASSERT(it != tester.notified_counts.end() && tester.notified_counts[i] == 1);
|
|
} else {
|
|
TESTASSERT(it == tester.notified_counts.end());
|
|
}
|
|
}
|
|
|
|
// Read the retx PDU from RLC1 and force resegmentation
|
|
byte_buffer_t retx1;
|
|
len = rlc1.read_pdu(retx1.msg, 9); // 4 byte header + 5 data
|
|
retx1.N_bytes = len;
|
|
|
|
// Write the retx PDU to RLC2
|
|
rlc2.write_pdu(retx1.msg, retx1.N_bytes);
|
|
|
|
TESTASSERT(9 == rlc1.get_buffer_state());
|
|
|
|
// Step timers to get status report
|
|
for (int cnt = 0; cnt < 5; cnt++) {
|
|
timers.step_all();
|
|
}
|
|
|
|
// Read status PDU from RLC2
|
|
status_buf = {};
|
|
len = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
status_buf.N_bytes = len;
|
|
|
|
// Assert status is correct
|
|
status_check = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
|
|
TESTASSERT(status_check.N_nack == 1); // 1 packet was lost.
|
|
TESTASSERT(status_check.nacks[0].nack_sn == 1); // SN 1 was lost.
|
|
TESTASSERT(status_check.ack_sn == 5); // Delivered up to SN 5.
|
|
|
|
// Read the remaining segment
|
|
byte_buffer_t retx2;
|
|
len = rlc1.read_pdu(retx2.msg, 9); // 4 byte header + 5 data
|
|
retx2.N_bytes = len;
|
|
|
|
// Write the retx PDU to RLC2
|
|
rlc2.write_pdu(retx2.msg, retx2.N_bytes);
|
|
|
|
TESTASSERT(tester.n_sdus == 5);
|
|
for (int i = 0; i < tester.n_sdus; i++) {
|
|
if (tester.sdus[i]->N_bytes != 10)
|
|
return -1;
|
|
for (int j = 0; j < 10; j++)
|
|
if (tester.sdus[i]->msg[j] != j)
|
|
return -1;
|
|
}
|
|
|
|
// Step timers to get status report
|
|
for (int cnt = 0; cnt < 5; cnt++) {
|
|
timers.step_all();
|
|
}
|
|
|
|
// Read status PDU from RLC2
|
|
status_buf = {};
|
|
len = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
status_buf.N_bytes = len;
|
|
|
|
// Assert status is correct
|
|
status_check = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
|
|
TESTASSERT(status_check.N_nack == 0); // all packets delivered.
|
|
TESTASSERT(status_check.ack_sn == 5); // Delivered up to SN 5.
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
|
|
// Check notifications
|
|
TESTASSERT(tester.notified_counts.size() == 5);
|
|
for (int i = 0; i < 5; i++) {
|
|
auto it = tester.notified_counts.find(i);
|
|
TESTASSERT(it != tester.notified_counts.end() && tester.notified_counts[i] == 1);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int resegment_test_2()
|
|
{
|
|
// SDUs: | 10 | 10 | 10 | 10 | 10 |
|
|
// PDUs: | 5 | 10 | 20 | 10 | 5 |
|
|
// Retx PDU segments: | 10 | 10 |
|
|
|
|
rlc_am_tester tester;
|
|
timer_handler timers(8);
|
|
|
|
rlc_am_lte rlc1(srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
|
|
rlc_am_lte rlc2(srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
|
|
|
|
if (not rlc1.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
if (not rlc2.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
// Push 5 SDUs into RLC1
|
|
unique_byte_buffer_t sdu_bufs[NBUFS];
|
|
for (int i = 0; i < NBUFS; i++) {
|
|
sdu_bufs[i] = srslte::make_byte_buffer();
|
|
for (int j = 0; j < 10; j++)
|
|
sdu_bufs[i]->msg[j] = j;
|
|
sdu_bufs[i]->N_bytes = 10; // Give each buffer a size of 10 bytes
|
|
sdu_bufs[i]->md.pdcp_sn = i; // Give each buffer a size of 10 bytes
|
|
rlc1.write_sdu(std::move(sdu_bufs[i]));
|
|
}
|
|
|
|
TESTASSERT(58 == rlc1.get_buffer_state());
|
|
|
|
// Read 5 PDUs from RLC1 (5 bytes, 10 bytes, 20 bytes, 10 bytes, 5 bytes)
|
|
byte_buffer_t pdu_bufs[NBUFS];
|
|
pdu_bufs[0].N_bytes = rlc1.read_pdu(pdu_bufs[0].msg, 7); // 2 byte header + 5 byte payload
|
|
pdu_bufs[1].N_bytes = rlc1.read_pdu(pdu_bufs[1].msg, 14); // 4 byte header + 10 byte payload
|
|
pdu_bufs[2].N_bytes = rlc1.read_pdu(pdu_bufs[2].msg, 25); // 5 byte header + 20 byte payload
|
|
pdu_bufs[3].N_bytes = rlc1.read_pdu(pdu_bufs[3].msg, 14); // 4 byte header + 10 byte payload
|
|
pdu_bufs[4].N_bytes = rlc1.read_pdu(pdu_bufs[4].msg, 7); // 2 byte header + 5 byte payload
|
|
|
|
TESTASSERT(0 == rlc1.get_buffer_state());
|
|
|
|
// Write PDUs into RLC2 (skip SN 2)
|
|
for (int i = 0; i < NBUFS; i++) {
|
|
if (i != 2)
|
|
rlc2.write_pdu(pdu_bufs[i].msg, pdu_bufs[i].N_bytes);
|
|
}
|
|
|
|
// Step timers until reordering timeout expires
|
|
for (int cnt = 0; cnt < 5; cnt++) {
|
|
timers.step_all();
|
|
}
|
|
|
|
TESTASSERT(4 == rlc2.get_buffer_state());
|
|
|
|
// Read status PDU from RLC2
|
|
byte_buffer_t status_buf;
|
|
status_buf.N_bytes = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
|
|
// Assert status is correct
|
|
rlc_status_pdu_t status_check = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
|
|
TESTASSERT(status_check.N_nack == 1); // One packet was lost.
|
|
TESTASSERT(status_check.ack_sn == 5); // Delivered up to SN 5.
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
|
|
TESTASSERT(25 == rlc1.get_buffer_state()); // 4 byte header + 20 data
|
|
|
|
// Check notifications
|
|
TESTASSERT(tester.notified_counts.size() == 2);
|
|
for (int i = 0; i < 5; i++) {
|
|
auto it = tester.notified_counts.find(i);
|
|
if (i == 0 || i == 4) {
|
|
TESTASSERT(it != tester.notified_counts.end() && tester.notified_counts[i] == 1);
|
|
} else {
|
|
TESTASSERT(it == tester.notified_counts.end());
|
|
}
|
|
}
|
|
|
|
// Read the retx PDU from RLC1 and force resegmentation
|
|
byte_buffer_t retx1;
|
|
retx1.N_bytes = rlc1.read_pdu(retx1.msg, 16); // 6 byte header + 10 data
|
|
|
|
// Write the retx PDU to RLC2
|
|
rlc2.write_pdu(retx1.msg, retx1.N_bytes);
|
|
|
|
TESTASSERT(18 == rlc1.get_buffer_state());
|
|
|
|
// Read the remaining segment
|
|
byte_buffer_t retx2;
|
|
retx2.N_bytes = rlc1.read_pdu(retx2.msg, 18); // 6 byte header + 12 data
|
|
|
|
// Write the retx PDU to RLC2
|
|
rlc2.write_pdu(retx2.msg, retx2.N_bytes);
|
|
|
|
TESTASSERT(tester.n_sdus == 5);
|
|
for (int i = 0; i < tester.n_sdus; i++) {
|
|
if (tester.sdus[i]->N_bytes != 10)
|
|
return -1;
|
|
for (int j = 0; j < 10; j++)
|
|
if (tester.sdus[i]->msg[j] != j)
|
|
return -1;
|
|
}
|
|
|
|
// Step timers until reordering timeout expires
|
|
for (int cnt = 0; cnt < 5; cnt++) {
|
|
timers.step_all();
|
|
}
|
|
|
|
// Read status PDU from RLC2
|
|
status_buf.N_bytes = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
|
|
// Assert status is correct
|
|
status_check = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
|
|
TESTASSERT(status_check.N_nack == 0); // all packets delivered.
|
|
TESTASSERT(status_check.ack_sn == 5); // Delivered up to SN 5.
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
TESTASSERT(tester.notified_counts.size() == 5);
|
|
|
|
for (int i = 0; i < 5; i++) {
|
|
auto it = tester.notified_counts.find(i);
|
|
TESTASSERT(it != tester.notified_counts.end() && tester.notified_counts[i] == 1);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int resegment_test_3()
|
|
{
|
|
// SDUs: | 10 | 10 | 10 | 10 | 10 |
|
|
// PDUs: | 5 | 5| 20 | 10 | 10 |
|
|
// Retx PDU segments: | 10 | 10 |
|
|
|
|
rlc_am_tester tester;
|
|
srslte::timer_handler timers(8);
|
|
|
|
rlc_am_lte rlc1(srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
|
|
rlc_am_lte rlc2(srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
|
|
|
|
if (not rlc1.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
if (not rlc2.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
// Push 5 SDUs into RLC1
|
|
unique_byte_buffer_t sdu_bufs[NBUFS];
|
|
for (int i = 0; i < NBUFS; i++) {
|
|
sdu_bufs[i] = srslte::make_byte_buffer();
|
|
for (int j = 0; j < 10; j++)
|
|
sdu_bufs[i]->msg[j] = j;
|
|
sdu_bufs[i]->N_bytes = 10; // Give each buffer a size of 10 bytes
|
|
sdu_bufs[i]->md.pdcp_sn = i;
|
|
rlc1.write_sdu(std::move(sdu_bufs[i]));
|
|
}
|
|
|
|
TESTASSERT(58 == rlc1.get_buffer_state());
|
|
|
|
// Read 5 PDUs from RLC1 (5 bytes, 5 bytes, 20 bytes, 10 bytes, 10 bytes)
|
|
byte_buffer_t pdu_bufs[NBUFS];
|
|
pdu_bufs[0].N_bytes = rlc1.read_pdu(pdu_bufs[0].msg, 7); // 2 byte header + 5 byte payload
|
|
pdu_bufs[1].N_bytes = rlc1.read_pdu(pdu_bufs[1].msg, 7); // 2 byte header + 5 byte payload
|
|
pdu_bufs[2].N_bytes = rlc1.read_pdu(pdu_bufs[2].msg, 24); // 4 byte header + 20 byte payload
|
|
pdu_bufs[3].N_bytes = rlc1.read_pdu(pdu_bufs[3].msg, 12); // 2 byte header + 10 byte payload
|
|
pdu_bufs[4].N_bytes = rlc1.read_pdu(pdu_bufs[4].msg, 12); // 2 byte header + 10 byte payload
|
|
|
|
TESTASSERT(0 == rlc1.get_buffer_state());
|
|
|
|
// Write PDUs into RLC2 (skip SN 2)
|
|
for (int i = 0; i < NBUFS; i++) {
|
|
if (i != 2)
|
|
rlc2.write_pdu(pdu_bufs[i].msg, pdu_bufs[i].N_bytes);
|
|
}
|
|
|
|
// Step timers until reordering timeout expires
|
|
for (int cnt = 0; cnt < 5; cnt++) {
|
|
timers.step_all();
|
|
}
|
|
|
|
TESTASSERT(4 == rlc2.get_buffer_state());
|
|
|
|
// Read status PDU from RLC2
|
|
byte_buffer_t status_buf;
|
|
status_buf.N_bytes = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
|
|
// Assert status is correct
|
|
rlc_status_pdu_t status_check = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
|
|
TESTASSERT(status_check.N_nack == 1); // One packet was lost.
|
|
TESTASSERT(status_check.nacks[0].nack_sn == 2); // SN 2 was lost.
|
|
TESTASSERT(status_check.ack_sn == 5); // Delivered up to SN 5.
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
|
|
// Check notifications
|
|
TESTASSERT(tester.notified_counts.size() == 3);
|
|
for (int i = 0; i < 5; i++) {
|
|
auto it = tester.notified_counts.find(i);
|
|
if (i == 0 || i == 3 || i == 4) {
|
|
TESTASSERT(it != tester.notified_counts.end() && tester.notified_counts[i] == 1);
|
|
} else {
|
|
TESTASSERT(it == tester.notified_counts.end());
|
|
}
|
|
}
|
|
|
|
// Read the retx PDU from RLC1 and force resegmentation
|
|
byte_buffer_t retx1;
|
|
retx1.N_bytes = rlc1.read_pdu(retx1.msg, 16); // 6 byte header + 10 data
|
|
|
|
// Write the retx PDU to RLC2
|
|
rlc2.write_pdu(retx1.msg, retx1.N_bytes);
|
|
|
|
// Read the remaining segment
|
|
byte_buffer_t retx2;
|
|
retx2.N_bytes = rlc1.read_pdu(retx2.msg, 16); // 6 byte header + 10 data
|
|
|
|
// Write the retx PDU to RLC2
|
|
rlc2.write_pdu(retx2.msg, retx2.N_bytes);
|
|
|
|
TESTASSERT(tester.n_sdus == 5);
|
|
for (int i = 0; i < tester.n_sdus; i++) {
|
|
if (tester.sdus[i]->N_bytes != 10)
|
|
return -1;
|
|
for (int j = 0; j < 10; j++)
|
|
if (tester.sdus[i]->msg[j] != j)
|
|
return -1;
|
|
}
|
|
|
|
// Get status from RLC 2
|
|
for (int cnt = 0; cnt < 5; cnt++) {
|
|
timers.step_all();
|
|
}
|
|
|
|
// Read status PDU from RLC2
|
|
status_buf.N_bytes = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
|
|
// Assert status is correct
|
|
status_check = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
|
|
TESTASSERT(status_check.N_nack == 0); // all packets delivered.
|
|
TESTASSERT(status_check.ack_sn == 5); // Delivered up to SN 5.
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
|
|
// Check final notifications
|
|
TESTASSERT(tester.notified_counts.size() == 5);
|
|
for (int i = 0; i < 5; i++) {
|
|
auto it = tester.notified_counts.find(i);
|
|
TESTASSERT(it != tester.notified_counts.end() && tester.notified_counts[i] == 1);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int resegment_test_4()
|
|
{
|
|
// SDUs: | 10 | 10 | 10 | 10 | 10 |
|
|
// PDUs: | 5 | 5| 30 | 5 | 5|
|
|
// Retx PDU segments: | 15 | 15 |
|
|
|
|
rlc_am_tester tester;
|
|
srslte::timer_handler timers(8);
|
|
|
|
rlc_am_lte rlc1(srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
|
|
rlc_am_lte rlc2(srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
|
|
|
|
if (not rlc1.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
if (not rlc2.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
// Push 5 SDUs into RLC1
|
|
unique_byte_buffer_t sdu_bufs[NBUFS];
|
|
for (int i = 0; i < NBUFS; i++) {
|
|
sdu_bufs[i] = srslte::make_byte_buffer();
|
|
for (int j = 0; j < 10; j++)
|
|
sdu_bufs[i]->msg[j] = j;
|
|
sdu_bufs[i]->N_bytes = 10; // Give each buffer a size of 10 bytes
|
|
sdu_bufs[i]->md.pdcp_sn = i;
|
|
rlc1.write_sdu(std::move(sdu_bufs[i]));
|
|
}
|
|
|
|
TESTASSERT(58 == rlc1.get_buffer_state());
|
|
|
|
// Read 5 PDUs from RLC1 (5 bytes, 5 bytes, 30 bytes, 5 bytes, 5 bytes)
|
|
byte_buffer_t pdu_bufs[NBUFS];
|
|
pdu_bufs[0].N_bytes = rlc1.read_pdu(pdu_bufs[0].msg, 7); // 2 byte header + 5 byte payload
|
|
pdu_bufs[1].N_bytes = rlc1.read_pdu(pdu_bufs[1].msg, 7); // 2 byte header + 5 byte payload
|
|
pdu_bufs[2].N_bytes = rlc1.read_pdu(pdu_bufs[2].msg, 35); // 5 byte header + 30 byte payload
|
|
pdu_bufs[3].N_bytes = rlc1.read_pdu(pdu_bufs[3].msg, 7); // 2 byte header + 5 byte payload
|
|
pdu_bufs[4].N_bytes = rlc1.read_pdu(pdu_bufs[4].msg, 7); // 2 byte header + 5 byte payload
|
|
|
|
TESTASSERT(0 == rlc1.get_buffer_state());
|
|
|
|
// Write PDUs into RLC2 (skip SN 2)
|
|
for (int i = 0; i < NBUFS; i++) {
|
|
if (i != 2)
|
|
rlc2.write_pdu(pdu_bufs[i].msg, pdu_bufs[i].N_bytes);
|
|
}
|
|
|
|
// Step timers until reordering timeout expires
|
|
int cnt = 5;
|
|
while (cnt--) {
|
|
timers.step_all();
|
|
}
|
|
|
|
TESTASSERT(4 == rlc2.get_buffer_state());
|
|
|
|
// Read status PDU from RLC2
|
|
byte_buffer_t status_buf;
|
|
status_buf.N_bytes = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
|
|
// Assert status is correct
|
|
rlc_status_pdu_t status_check = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
|
|
TESTASSERT(status_check.N_nack == 1); // one packet lost.
|
|
TESTASSERT(status_check.nacks[0].nack_sn == 2); // SN 2 was lost.
|
|
TESTASSERT(status_check.ack_sn == 5); // Delivered up to SN 5.
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
|
|
TESTASSERT(tester.notified_counts.size() == 2);
|
|
for (int i = 0; i < 5; i++) {
|
|
auto it = tester.notified_counts.find(i);
|
|
if (i == 0 || i == 4) {
|
|
TESTASSERT(it != tester.notified_counts.end() && tester.notified_counts[i] == 1);
|
|
} else {
|
|
TESTASSERT(it == tester.notified_counts.end());
|
|
}
|
|
}
|
|
|
|
// Read the retx PDU from RLC1 and force resegmentation
|
|
byte_buffer_t retx1;
|
|
retx1.N_bytes = rlc1.read_pdu(retx1.msg, 21); // 6 byte header + 15 data
|
|
|
|
// Write the retx PDU to RLC2
|
|
rlc2.write_pdu(retx1.msg, retx1.N_bytes);
|
|
|
|
TESTASSERT(23 == rlc1.get_buffer_state());
|
|
|
|
// Read the remaining segment
|
|
byte_buffer_t retx2;
|
|
retx2.N_bytes = rlc1.read_pdu(retx2.msg, 23); // 6 byte header + 18 data
|
|
|
|
// Write the retx PDU to RLC2
|
|
rlc2.write_pdu(retx2.msg, retx2.N_bytes);
|
|
|
|
TESTASSERT(tester.n_sdus == 5);
|
|
for (int i = 0; i < tester.n_sdus; i++) {
|
|
if (tester.sdus[i]->N_bytes != 10)
|
|
return -1;
|
|
for (int j = 0; j < 10; j++)
|
|
if (tester.sdus[i]->msg[j] != j)
|
|
return -1;
|
|
}
|
|
|
|
// Get status from RLC 2
|
|
for (int i = 0; i < 5; i++) {
|
|
timers.step_all();
|
|
}
|
|
|
|
// Read status PDU from RLC2
|
|
status_buf.N_bytes = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
|
|
// Assert status is correct
|
|
status_check = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
|
|
TESTASSERT(status_check.N_nack == 0); // all packets delivered.
|
|
TESTASSERT(status_check.ack_sn == 5); // Delivered up to SN 5.
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
|
|
// Check final notifications
|
|
TESTASSERT(tester.notified_counts.size() == 5);
|
|
for (int i = 0; i < 5; i++) {
|
|
auto it = tester.notified_counts.find(i);
|
|
TESTASSERT(it != tester.notified_counts.end() && tester.notified_counts[i] == 1);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int resegment_test_5()
|
|
{
|
|
// SDUs: | 10 | 10 | 10 | 10 | 10 |
|
|
// PDUs: |2|3| 40 |3|2|
|
|
// Retx PDU segments: | 20 | 20 |
|
|
|
|
rlc_am_tester tester;
|
|
srslte::timer_handler timers(8);
|
|
|
|
rlc_am_lte rlc1(srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
|
|
rlc_am_lte rlc2(srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
|
|
|
|
if (not rlc1.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
if (not rlc2.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
// Push 5 SDUs into RLC1
|
|
unique_byte_buffer_t sdu_bufs[NBUFS];
|
|
for (int i = 0; i < NBUFS; i++) {
|
|
sdu_bufs[i] = srslte::make_byte_buffer();
|
|
for (int j = 0; j < 10; j++)
|
|
sdu_bufs[i]->msg[j] = j;
|
|
sdu_bufs[i]->N_bytes = 10; // Give each buffer a size of 10 bytes
|
|
sdu_bufs[i]->md.pdcp_sn = i;
|
|
rlc1.write_sdu(std::move(sdu_bufs[i]));
|
|
}
|
|
|
|
TESTASSERT(58 == rlc1.get_buffer_state());
|
|
|
|
// Read 5 PDUs from RLC1 (2 bytes, 3 bytes, 40 bytes, 3 bytes, 2 bytes)
|
|
byte_buffer_t pdu_bufs[NBUFS];
|
|
pdu_bufs[0].N_bytes = rlc1.read_pdu(pdu_bufs[0].msg, 4); // 2 byte header + 2 byte payload
|
|
pdu_bufs[1].N_bytes = rlc1.read_pdu(pdu_bufs[1].msg, 5); // 2 byte header + 3 byte payload
|
|
pdu_bufs[2].N_bytes = rlc1.read_pdu(pdu_bufs[2].msg, 48); // 8 byte header + 40 byte payload
|
|
pdu_bufs[3].N_bytes = rlc1.read_pdu(pdu_bufs[3].msg, 5); // 2 byte header + 3 byte payload
|
|
pdu_bufs[4].N_bytes = rlc1.read_pdu(pdu_bufs[4].msg, 4); // 2 byte header + 2 byte payload
|
|
|
|
TESTASSERT(0 == rlc1.get_buffer_state());
|
|
|
|
// Write PDUs into RLC2 (skip SN 2)
|
|
for (int i = 0; i < NBUFS; i++) {
|
|
if (i != 2)
|
|
rlc2.write_pdu(pdu_bufs[i].msg, pdu_bufs[i].N_bytes);
|
|
}
|
|
|
|
// Step timers until reordering timeout expires
|
|
int cnt = 5;
|
|
while (cnt--) {
|
|
timers.step_all();
|
|
}
|
|
|
|
TESTASSERT(4 == rlc2.get_buffer_state());
|
|
|
|
// Read status PDU from RLC2
|
|
byte_buffer_t status_buf;
|
|
status_buf.N_bytes = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
|
|
// Assert status is correct
|
|
rlc_status_pdu_t status_check = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
|
|
TESTASSERT(status_check.N_nack == 1); // one packet was lost.
|
|
TESTASSERT(status_check.nacks[0].nack_sn == 2); // SN 2 was lost.
|
|
TESTASSERT(status_check.ack_sn == 5); // Delivered up to SN 5.
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
|
|
// Check notifications
|
|
TESTASSERT(tester.notified_counts.size() == 0);
|
|
|
|
// Read the retx PDU from RLC1 and force resegmentation
|
|
byte_buffer_t retx1;
|
|
retx1.N_bytes = rlc1.read_pdu(retx1.msg, 27); // 7 byte header + 20 data
|
|
|
|
// Write the retx PDU to RLC2
|
|
rlc2.write_pdu(retx1.msg, retx1.N_bytes);
|
|
|
|
TESTASSERT(31 == rlc1.get_buffer_state());
|
|
|
|
// Read the remaining segment
|
|
byte_buffer_t retx2;
|
|
retx2.N_bytes = rlc1.read_pdu(retx2.msg, 34); // 7 byte header + 24 data
|
|
|
|
// Write the retx PDU to RLC2
|
|
rlc2.write_pdu(retx2.msg, retx2.N_bytes);
|
|
|
|
TESTASSERT(tester.n_sdus == 5);
|
|
for (int i = 0; i < tester.n_sdus; i++) {
|
|
if (tester.sdus[i]->N_bytes != 10)
|
|
return -1;
|
|
for (int j = 0; j < 10; j++)
|
|
if (tester.sdus[i]->msg[j] != j)
|
|
return -1;
|
|
}
|
|
|
|
// Get status from RLC 2
|
|
for (int i = 0; i < 5; i++) {
|
|
timers.step_all();
|
|
}
|
|
|
|
// Read status PDU from RLC2
|
|
status_buf.N_bytes = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
|
|
// Assert status is correct
|
|
status_check = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
|
|
TESTASSERT(status_check.N_nack == 0); // all packets delivered.
|
|
TESTASSERT(status_check.ack_sn == 5); // Delivered up to SN 5.
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
|
|
// Check final notifications
|
|
TESTASSERT(tester.notified_counts.size() == 5);
|
|
for (int i = 0; i < 5; i++) {
|
|
auto it = tester.notified_counts.find(i);
|
|
TESTASSERT(it != tester.notified_counts.end() && tester.notified_counts[i] == 1);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int resegment_test_6()
|
|
{
|
|
// SDUs: |10|10|10| 54 | 54 | 54 | 54 | 54 | 54 |
|
|
// PDUs: |10|10|10| 270 | 54 |
|
|
// Retx PDU segments: | 120 | 150 |
|
|
|
|
rlc_am_tester tester;
|
|
srslte::timer_handler timers(8);
|
|
int len = 0;
|
|
|
|
rlc_am_lte rlc1(srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
|
|
rlc_am_lte rlc2(srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
|
|
|
|
if (not rlc1.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
if (not rlc2.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
// Push SDUs into RLC1
|
|
unique_byte_buffer_t sdu_bufs[9];
|
|
for (int i = 0; i < 3; i++) {
|
|
sdu_bufs[i] = srslte::make_byte_buffer();
|
|
for (int j = 0; j < 10; j++)
|
|
sdu_bufs[i]->msg[j] = j;
|
|
sdu_bufs[i]->N_bytes = 10; // Give each buffer a size of 10 bytes
|
|
sdu_bufs[i]->md.pdcp_sn = i;
|
|
rlc1.write_sdu(std::move(sdu_bufs[i]));
|
|
}
|
|
for (int i = 3; i < 9; i++) {
|
|
sdu_bufs[i] = srslte::make_byte_buffer();
|
|
for (int j = 0; j < 54; j++)
|
|
sdu_bufs[i]->msg[j] = j;
|
|
sdu_bufs[i]->N_bytes = 54;
|
|
sdu_bufs[i]->md.pdcp_sn = i;
|
|
rlc1.write_sdu(std::move(sdu_bufs[i]));
|
|
}
|
|
|
|
TESTASSERT(368 == rlc1.get_buffer_state());
|
|
|
|
// Read PDUs from RLC1 (10, 10, 10, 270, 54)
|
|
byte_buffer_t pdu_bufs[5];
|
|
for (int i = 0; i < 3; i++) {
|
|
len = rlc1.read_pdu(pdu_bufs[i].msg, 12);
|
|
pdu_bufs[i].N_bytes = len;
|
|
}
|
|
len = rlc1.read_pdu(pdu_bufs[3].msg, 278);
|
|
pdu_bufs[3].N_bytes = len;
|
|
len = rlc1.read_pdu(pdu_bufs[4].msg, 56);
|
|
pdu_bufs[4].N_bytes = len;
|
|
|
|
TESTASSERT(0 == rlc1.get_buffer_state());
|
|
|
|
// Write PDUs into RLC2 (skip SN 3)
|
|
for (int i = 0; i < 5; i++) {
|
|
if (i != 3)
|
|
rlc2.write_pdu(pdu_bufs[i].msg, pdu_bufs[i].N_bytes);
|
|
}
|
|
|
|
// Step timers until reordering timeout expires
|
|
int cnt = 5;
|
|
while (cnt--) {
|
|
timers.step_all();
|
|
}
|
|
|
|
TESTASSERT(4 == rlc2.get_buffer_state());
|
|
|
|
// Read status PDU from RLC2
|
|
byte_buffer_t status_buf;
|
|
len = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
status_buf.N_bytes = len;
|
|
|
|
// Assert status is correct
|
|
rlc_status_pdu_t status_check = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
|
|
TESTASSERT(status_check.N_nack == 1); // One packet was lost.
|
|
TESTASSERT(status_check.nacks[0].nack_sn == 3); // SN 3 was lost.
|
|
TESTASSERT(status_check.ack_sn == 5);
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
|
|
TESTASSERT(278 == rlc1.get_buffer_state());
|
|
|
|
// Check notifications
|
|
TESTASSERT(tester.notified_counts.size() == 4);
|
|
for (int i = 0; i < 5; i++) {
|
|
auto it = tester.notified_counts.find(i);
|
|
if (i == 0 || i == 1 || i == 2 || i == 8) {
|
|
TESTASSERT(it != tester.notified_counts.end() && tester.notified_counts[i] == 1);
|
|
} else {
|
|
TESTASSERT(it == tester.notified_counts.end());
|
|
}
|
|
}
|
|
|
|
// Read the retx PDU from RLC1 and force resegmentation
|
|
byte_buffer_t retx1;
|
|
len = rlc1.read_pdu(retx1.msg, 129);
|
|
retx1.N_bytes = len;
|
|
|
|
// Write the retx PDU to RLC2
|
|
rlc2.write_pdu(retx1.msg, retx1.N_bytes);
|
|
|
|
TESTASSERT(159 == rlc1.get_buffer_state());
|
|
|
|
// Read the remaining segment
|
|
byte_buffer_t retx2;
|
|
len = rlc1.read_pdu(retx2.msg, 162);
|
|
retx2.N_bytes = len;
|
|
|
|
// Write the retx PDU to RLC2
|
|
rlc2.write_pdu(retx2.msg, retx2.N_bytes);
|
|
|
|
TESTASSERT(tester.n_sdus == 9);
|
|
for (int i = 0; i < 3; i++) {
|
|
TESTASSERT(tester.sdus[i]->N_bytes == 10);
|
|
for (int j = 0; j < 10; j++)
|
|
TESTASSERT(tester.sdus[i]->msg[j] == j);
|
|
}
|
|
for (int i = 3; i < 9; i++) {
|
|
if (i >= tester.n_sdus)
|
|
return -1;
|
|
if (tester.sdus[i]->N_bytes != 54)
|
|
return -1;
|
|
for (int j = 0; j < 54; j++) {
|
|
if (tester.sdus[i]->msg[j] != j)
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
// Get status from RLC 2
|
|
for (int i = 0; i < 5; i++) {
|
|
timers.step_all();
|
|
}
|
|
|
|
// Read status PDU from RLC2
|
|
status_buf.N_bytes = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
|
|
// Assert status is correct
|
|
status_check = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
|
|
TESTASSERT(status_check.N_nack == 0); // all packets delivered.
|
|
TESTASSERT(status_check.ack_sn == 5); // Delivered up to SN 5.
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
|
|
// Check final notifications
|
|
TESTASSERT(tester.notified_counts.size() == 9);
|
|
for (int i = 0; i < 9; i++) {
|
|
auto it = tester.notified_counts.find(i);
|
|
TESTASSERT(it != tester.notified_counts.end() && tester.notified_counts[i] == 1);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
// Retransmission of PDU segments of the same size
|
|
int resegment_test_7()
|
|
{
|
|
// SDUs: | 30 | 30 |
|
|
// PDUs: | 13 | 13 | 11 | 13 | 10 |
|
|
// Rxed PDUs | 13 | 13 | | 13 | 10 |
|
|
// Retx PDU segments: | 4 | 7 |
|
|
// Retx PDU segments: |3|3]3|2|
|
|
const uint32_t N_SDU_BUFS = 2;
|
|
const uint32_t N_PDU_BUFS = 5;
|
|
const uint32_t sdu_size = 30;
|
|
|
|
#if HAVE_PCAP
|
|
rlc_pcap pcap;
|
|
pcap.open("rlc_am_test7.pcap", 0);
|
|
rlc_am_tester tester(&pcap);
|
|
#else
|
|
rlc_am_tester tester(NULL);
|
|
#endif
|
|
srslte::timer_handler timers(8);
|
|
|
|
rlc_am_lte rlc1(srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
|
|
rlc_am_lte rlc2(srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
|
|
|
|
if (not rlc1.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
if (not rlc2.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
// Push 2 SDUs into RLC1
|
|
unique_byte_buffer_t sdu_bufs[N_SDU_BUFS];
|
|
for (uint32_t i = 0; i < N_SDU_BUFS; i++) {
|
|
sdu_bufs[i] = srslte::make_byte_buffer();
|
|
for (uint32_t j = 0; j < sdu_size; j++) {
|
|
sdu_bufs[i]->msg[j] = i;
|
|
}
|
|
sdu_bufs[i]->N_bytes = sdu_size; // Give each buffer a size of 15 bytes
|
|
sdu_bufs[i]->md.pdcp_sn = i;
|
|
rlc1.write_sdu(std::move(sdu_bufs[i]));
|
|
}
|
|
|
|
TESTASSERT(64 == rlc1.get_buffer_state());
|
|
|
|
// Read PDUs from RLC1 (15 bytes each)
|
|
byte_buffer_t pdu_bufs[N_PDU_BUFS];
|
|
for (uint32_t i = 0; i < N_PDU_BUFS; i++) {
|
|
pdu_bufs[i].N_bytes = rlc1.read_pdu(pdu_bufs[i].msg, 15); // 2 bytes for header + 12 B payload
|
|
TESTASSERT(pdu_bufs[i].N_bytes);
|
|
}
|
|
|
|
// Step timers until poll_retx timeout expires
|
|
int cnt = 5;
|
|
while (cnt--) {
|
|
timers.step_all();
|
|
}
|
|
|
|
// RLC should try to retx a random PDU because it needs to request a status from the receiver
|
|
TESTASSERT(0 != rlc1.get_buffer_state());
|
|
|
|
// Skip PDU with SN 2
|
|
for (uint32_t i = 0; i < N_PDU_BUFS; i++) {
|
|
if (i != 2) {
|
|
rlc2.write_pdu(pdu_bufs[i].msg, pdu_bufs[i].N_bytes);
|
|
#if HAVE_PCAP
|
|
pcap.write_dl_am_ccch(pdu_bufs[i].msg, pdu_bufs[i].N_bytes);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
// Step timers until reordering timeout expires
|
|
cnt = 5;
|
|
while (cnt--) {
|
|
timers.step_all();
|
|
}
|
|
|
|
// RLC should try to retransmit a random PDU because it needs to re-request a status PDU from the receiver
|
|
TESTASSERT(0 != rlc1.get_buffer_state());
|
|
|
|
// first round of retx, forcing resegmentation
|
|
byte_buffer_t retx[4];
|
|
for (uint32_t i = 0; i < 4; i++) {
|
|
TESTASSERT(0 != rlc1.get_buffer_state());
|
|
retx[i].N_bytes = rlc1.read_pdu(retx[i].msg, 7);
|
|
TESTASSERT(retx[i].N_bytes);
|
|
|
|
// Write the last two segments to RLC2
|
|
if (i > 1) {
|
|
rlc2.write_pdu(retx[i].msg, retx[i].N_bytes);
|
|
#if HAVE_PCAP
|
|
pcap.write_dl_am_ccch(retx[i].msg, retx[i].N_bytes);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
// Read status PDU from RLC2
|
|
TESTASSERT(rlc2.get_buffer_state());
|
|
byte_buffer_t status_buf;
|
|
status_buf.N_bytes = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
|
|
// Assert status is correct
|
|
rlc_status_pdu_t status_check = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
|
|
TESTASSERT(status_check.N_nack == 1); // one packet dropped.
|
|
TESTASSERT(status_check.nacks[0].nack_sn == 2); // SN 2 dropped.
|
|
TESTASSERT(status_check.ack_sn == 5); // Delivered up to SN 5.
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
#if HAVE_PCAP
|
|
pcap.write_ul_am_ccch(status_buf.msg, status_buf.N_bytes);
|
|
#endif
|
|
|
|
TESTASSERT(15 == rlc1.get_buffer_state());
|
|
|
|
// Check notifications
|
|
TESTASSERT(tester.notified_counts.size() == 0);
|
|
|
|
// second round of retx, forcing resegmentation
|
|
byte_buffer_t retx2[4];
|
|
for (uint32_t i = 0; i < 4; i++) {
|
|
TESTASSERT(rlc1.get_buffer_state() != 0);
|
|
retx2[i].N_bytes = rlc1.read_pdu(retx2[i].msg, 9);
|
|
TESTASSERT(retx2[i].N_bytes != 0);
|
|
|
|
rlc2.write_pdu(retx2[i].msg, retx2[i].N_bytes);
|
|
#if HAVE_PCAP
|
|
pcap.write_dl_am_ccch(retx[i].msg, retx[i].N_bytes);
|
|
#endif
|
|
}
|
|
|
|
// check buffer states
|
|
TESTASSERT(0 == rlc1.get_buffer_state());
|
|
|
|
// Step timers until poll_retx timeout expires
|
|
cnt = 5;
|
|
while (cnt--) {
|
|
timers.step_all();
|
|
}
|
|
|
|
// Read status PDU from RLC2
|
|
TESTASSERT(rlc2.get_buffer_state());
|
|
status_buf.N_bytes = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
|
|
// Assert status is correct
|
|
status_check = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_check);
|
|
TESTASSERT(status_check.N_nack == 0); // all packets delivered.
|
|
TESTASSERT(status_check.ack_sn == 5); // Delivered up to SN 5.
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
#if HAVE_PCAP
|
|
pcap.write_ul_am_ccch(status_buf.msg, status_buf.N_bytes);
|
|
#endif
|
|
|
|
// check status again
|
|
TESTASSERT(0 == rlc1.get_buffer_state());
|
|
TESTASSERT(0 == rlc2.get_buffer_state());
|
|
|
|
// Check number of SDUs and their content
|
|
TESTASSERT(tester.n_sdus == N_SDU_BUFS);
|
|
for (int i = 0; i < tester.n_sdus; i++) {
|
|
if (tester.sdus[i]->N_bytes != sdu_size)
|
|
return -1;
|
|
for (uint32_t j = 0; j < N_SDU_BUFS; j++) {
|
|
if (tester.sdus[i]->msg[j] != i)
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
// Check final notifications
|
|
TESTASSERT(tester.notified_counts.size() == 2);
|
|
for (int i = 0; i < 2; i++) {
|
|
auto it = tester.notified_counts.find(i);
|
|
TESTASSERT(it != tester.notified_counts.end() && tester.notified_counts[i] == 1);
|
|
}
|
|
|
|
#if HAVE_PCAP
|
|
pcap.close();
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
// Retransmission of PDU segments with different size
|
|
int resegment_test_8()
|
|
{
|
|
// SDUs: | 30 | 30 |
|
|
// PDUs: | 15 | 15 | 15 | 15 | 15 |
|
|
// Rxed PDUs | 15 | | 15 | 15 |
|
|
// Retx PDU segments: | 7 | 7 | 7 | 7 |
|
|
// Retx PDU segments: | 6 | 6 ] 6 | 6 | 6 | 6 | 6 | 6 |
|
|
const uint32_t N_SDU_BUFS = 2;
|
|
const uint32_t N_PDU_BUFS = 5;
|
|
const uint32_t sdu_size = 30;
|
|
|
|
#if HAVE_PCAP
|
|
rlc_pcap pcap;
|
|
pcap.open("rlc_am_test8.pcap", 0);
|
|
rlc_am_tester tester(&pcap);
|
|
#else
|
|
rlc_am_tester tester(NULL);
|
|
#endif
|
|
srslte::timer_handler timers(8);
|
|
|
|
rlc_am_lte rlc1(srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
|
|
rlc_am_lte rlc2(srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
|
|
|
|
if (not rlc1.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
if (not rlc2.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
// Push 2 SDUs into RLC1
|
|
unique_byte_buffer_t sdu_bufs[N_SDU_BUFS];
|
|
for (uint32_t i = 0; i < N_SDU_BUFS; i++) {
|
|
sdu_bufs[i] = srslte::make_byte_buffer();
|
|
for (uint32_t j = 0; j < sdu_size; j++) {
|
|
sdu_bufs[i]->msg[j] = i;
|
|
}
|
|
sdu_bufs[i]->N_bytes = sdu_size; // Give each buffer a size of 30 bytes
|
|
sdu_bufs[i]->md.pdcp_sn = i;
|
|
rlc1.write_sdu(std::move(sdu_bufs[i]));
|
|
}
|
|
|
|
TESTASSERT(64 == rlc1.get_buffer_state());
|
|
|
|
// Read PDUs from RLC1 (15 bytes each)
|
|
byte_buffer_t pdu_bufs[N_PDU_BUFS];
|
|
for (uint32_t i = 0; i < N_PDU_BUFS; i++) {
|
|
pdu_bufs[i].N_bytes = rlc1.read_pdu(pdu_bufs[i].msg, 15); // 12 bytes for header + payload
|
|
TESTASSERT(pdu_bufs[i].N_bytes);
|
|
}
|
|
|
|
TESTASSERT(0 == rlc1.get_buffer_state());
|
|
|
|
// Skip PDU one and two
|
|
for (uint32_t i = 0; i < N_PDU_BUFS; i++) {
|
|
if (i < 1 || i > 2) {
|
|
rlc2.write_pdu(pdu_bufs[i].msg, pdu_bufs[i].N_bytes);
|
|
#if HAVE_PCAP
|
|
pcap.write_dl_am_ccch(pdu_bufs[i].msg, pdu_bufs[i].N_bytes);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
// Step timers until reordering timeout expires
|
|
int cnt = 5;
|
|
while (cnt--) {
|
|
timers.step_all();
|
|
}
|
|
|
|
// what PDU to retransmit is random but it must not be zero
|
|
TESTASSERT(0 != rlc1.get_buffer_state());
|
|
|
|
// first round of retx, forcing resegmentation
|
|
byte_buffer_t retx[4];
|
|
for (uint32_t i = 0; i < 3; i++) {
|
|
TESTASSERT(rlc1.get_buffer_state());
|
|
retx[i].N_bytes = rlc1.read_pdu(retx[i].msg, 8);
|
|
TESTASSERT(retx[i].N_bytes);
|
|
|
|
// Write the last two segments to RLC2
|
|
if (i > 1) {
|
|
rlc2.write_pdu(retx[i].msg, retx[i].N_bytes);
|
|
#if HAVE_PCAP
|
|
pcap.write_dl_am_ccch(retx[i].msg, retx[i].N_bytes);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
// Step timers until reordering timeout expires
|
|
cnt = 7;
|
|
while (cnt--) {
|
|
timers.step_all();
|
|
}
|
|
|
|
// Read status PDU from RLC2
|
|
TESTASSERT(rlc2.get_buffer_state());
|
|
byte_buffer_t status_buf;
|
|
status_buf.N_bytes = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
#if HAVE_PCAP
|
|
pcap.write_ul_am_ccch(status_buf.msg, status_buf.N_bytes);
|
|
#endif
|
|
|
|
TESTASSERT(15 == rlc1.get_buffer_state());
|
|
|
|
// second round of retx, reduce grant size to force different segment sizes
|
|
byte_buffer_t retx2[20];
|
|
for (uint32_t i = 0; i < 7; i++) {
|
|
TESTASSERT(rlc1.get_buffer_state() != 0);
|
|
retx2[i].N_bytes = rlc1.read_pdu(retx2[i].msg, 9);
|
|
TESTASSERT(retx2[i].N_bytes != 0);
|
|
rlc2.write_pdu(retx2[i].msg, retx2[i].N_bytes);
|
|
#if HAVE_PCAP
|
|
pcap.write_dl_am_ccch(retx[i].msg, retx[i].N_bytes);
|
|
#endif
|
|
}
|
|
|
|
// get BSR from RLC2
|
|
status_buf.N_bytes = rlc2.read_pdu(status_buf.msg, 10); // 10 bytes is enough to hold the status
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
#if HAVE_PCAP
|
|
pcap.write_ul_am_ccch(status_buf.msg, status_buf.N_bytes);
|
|
#endif
|
|
|
|
// check buffer states
|
|
if (rlc1.get_buffer_state() != 0) {
|
|
return -1;
|
|
};
|
|
if (rlc2.get_buffer_state() != 0) {
|
|
return -1;
|
|
};
|
|
|
|
// Check number of SDUs and their content
|
|
TESTASSERT(tester.n_sdus == N_SDU_BUFS);
|
|
for (int i = 0; i < tester.n_sdus; i++) {
|
|
if (tester.sdus[i]->N_bytes != sdu_size)
|
|
return -1;
|
|
for (uint32_t j = 0; j < N_SDU_BUFS; j++) {
|
|
if (tester.sdus[i]->msg[j] != i)
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
#if HAVE_PCAP
|
|
pcap.close();
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool reset_test()
|
|
{
|
|
rlc_am_tester tester;
|
|
srslte::timer_handler timers(8);
|
|
int len = 0;
|
|
|
|
rlc_am_lte rlc1(srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
|
|
|
|
if (not rlc1.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
// Push 1 SDU of size 10 into RLC1
|
|
unique_byte_buffer_t sdu_buf = srslte::make_byte_buffer();
|
|
sdu_buf->N_bytes = 100;
|
|
std::fill(sdu_buf->msg, sdu_buf->msg + sdu_buf->N_bytes, 0);
|
|
sdu_buf->msg[0] = 1; // Write the index into the buffer
|
|
rlc1.write_sdu(std::move(sdu_buf));
|
|
|
|
// read 1 PDU from RLC1 and force segmentation
|
|
byte_buffer_t pdu_bufs;
|
|
len = rlc1.read_pdu(pdu_bufs.msg, 4);
|
|
pdu_bufs.N_bytes = len;
|
|
|
|
// reset RLC1
|
|
rlc1.stop();
|
|
|
|
// read another PDU segment from RLC1
|
|
len = rlc1.read_pdu(pdu_bufs.msg, 4);
|
|
pdu_bufs.N_bytes = len;
|
|
|
|
// now empty RLC buffer
|
|
len = rlc1.read_pdu(pdu_bufs.msg, 100);
|
|
pdu_bufs.N_bytes = len;
|
|
|
|
if (0 != rlc1.get_buffer_state()) {
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool resume_test()
|
|
{
|
|
rlc_am_tester tester;
|
|
srslte::timer_handler timers(8);
|
|
int len = 0;
|
|
|
|
rlc_am_lte rlc1(srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
|
|
|
|
if (not rlc1.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
// Push 1 SDU of size 10 into RLC1
|
|
unique_byte_buffer_t sdu_buf = srslte::make_byte_buffer();
|
|
sdu_buf->N_bytes = 100;
|
|
std::fill(sdu_buf->msg, sdu_buf->msg + sdu_buf->N_bytes, 0);
|
|
sdu_buf->msg[0] = 1; // Write the index into the buffer
|
|
rlc1.write_sdu(std::move(sdu_buf));
|
|
|
|
// read 1 PDU from RLC1 and force segmentation
|
|
byte_buffer_t pdu_bufs;
|
|
len = rlc1.read_pdu(pdu_bufs.msg, 4);
|
|
pdu_bufs.N_bytes = len;
|
|
|
|
// reestablish RLC1
|
|
rlc1.reestablish();
|
|
|
|
// resume RLC1
|
|
rlc1.resume();
|
|
|
|
// Buffer should be zero
|
|
if (0 != rlc1.get_buffer_state()) {
|
|
return -1;
|
|
}
|
|
|
|
// Do basic test
|
|
byte_buffer_t pdu_bufs_tx[NBUFS];
|
|
basic_test_tx(&rlc1, pdu_bufs_tx);
|
|
|
|
return 0;
|
|
}
|
|
|
|
bool stop_test()
|
|
{
|
|
rlc_am_tester tester;
|
|
srslte::timer_handler timers(8);
|
|
|
|
rlc_am_lte rlc1(srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
|
|
|
|
if (not rlc1.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
// start thread reading
|
|
ul_writer writer(&rlc1);
|
|
writer.start(-2);
|
|
|
|
// let writer thread block on tx_queue
|
|
usleep(1e6);
|
|
|
|
// stop RLC1
|
|
rlc1.stop();
|
|
|
|
return 0;
|
|
}
|
|
|
|
// This test checks if status PDUs are generated even though the grant size may not
|
|
// be enough to fit all SNs that would need to be NACKed
|
|
bool status_pdu_test()
|
|
{
|
|
rlc_am_tester tester;
|
|
srslte::timer_handler timers(8);
|
|
int len = 0;
|
|
|
|
rlc_am_lte rlc1(srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
|
|
rlc_am_lte rlc2(srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
|
|
|
|
if (not rlc1.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
if (not rlc2.configure(rlc_config_t::default_rlc_am_config())) {
|
|
return -1;
|
|
}
|
|
|
|
// Push 5 SDUs into RLC1
|
|
unique_byte_buffer_t sdu_bufs[NBUFS];
|
|
for (int i = 0; i < NBUFS; i++) {
|
|
sdu_bufs[i] = srslte::make_byte_buffer();
|
|
sdu_bufs[i]->N_bytes = 1; // Give each buffer a size of 1 byte
|
|
sdu_bufs[i]->msg[0] = i; // Write the index into the buffer
|
|
rlc1.write_sdu(std::move(sdu_bufs[i]));
|
|
}
|
|
|
|
TESTASSERT(13 == rlc1.get_buffer_state());
|
|
|
|
// Read 5 PDUs from RLC1 (1 byte each)
|
|
byte_buffer_t pdu_bufs[NBUFS];
|
|
for (int i = 0; i < NBUFS; i++) {
|
|
len = rlc1.read_pdu(pdu_bufs[i].msg, 4); // 2 byte header + 1 byte payload
|
|
pdu_bufs[i].N_bytes = len;
|
|
}
|
|
|
|
TESTASSERT(0 == rlc1.get_buffer_state());
|
|
|
|
// Only pass last PDUs to RLC2
|
|
for (int i = 0; i < NBUFS; i++) {
|
|
if (i == 4) {
|
|
rlc2.write_pdu(pdu_bufs[i].msg, pdu_bufs[i].N_bytes);
|
|
}
|
|
}
|
|
|
|
// Step timers until reordering timeout expires
|
|
int cnt = 5;
|
|
while (cnt--) {
|
|
timers.step_all();
|
|
}
|
|
|
|
uint32_t buffer_state = rlc2.get_buffer_state();
|
|
TESTASSERT(8 == buffer_state);
|
|
|
|
// Read status PDU from RLC2
|
|
byte_buffer_t status_buf;
|
|
len = rlc2.read_pdu(status_buf.msg, 5); // provide only small grant
|
|
status_buf.N_bytes = len;
|
|
|
|
TESTASSERT(status_buf.N_bytes != 0);
|
|
|
|
// check status PDU doesn't contain ACK_SN in NACK list
|
|
rlc_status_pdu_t status_pdu = {};
|
|
rlc_am_read_status_pdu(status_buf.msg, status_buf.N_bytes, &status_pdu);
|
|
if (rlc_am_is_valid_status_pdu(status_pdu) == false) {
|
|
return -1;
|
|
}
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
|
|
TESTASSERT(3 == rlc1.get_buffer_state()); // 2 byte header + 1 byte payload
|
|
|
|
// Read the retx PDU from RLC1
|
|
byte_buffer_t retx;
|
|
len = rlc1.read_pdu(retx.msg, 10);
|
|
retx.N_bytes = len;
|
|
|
|
// Write the retx PDU to RLC2
|
|
rlc2.write_pdu(retx.msg, retx.N_bytes);
|
|
|
|
// Step timers until reordering timeout expires
|
|
cnt = 5;
|
|
while (cnt--) {
|
|
timers.step_all();
|
|
}
|
|
|
|
// get buffer state and status PDU again
|
|
status_buf.clear();
|
|
len = rlc2.read_pdu(status_buf.msg, 10); // big enough grant to fit full status PDU
|
|
status_buf.N_bytes = len;
|
|
TESTASSERT(status_buf.N_bytes != 0);
|
|
|
|
// Write status PDU to RLC1
|
|
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
|
|
|
|
// retransmission of remaining PDUs
|
|
for (int i = 0; i < 3; i++) {
|
|
retx.clear();
|
|
len = rlc1.read_pdu(retx.msg, 3);
|
|
retx.N_bytes = len;
|
|
|
|
// Write the retx PDU to RLC2
|
|
rlc2.write_pdu(retx.msg, retx.N_bytes);
|
|
}
|
|
|
|
TESTASSERT(tester.n_sdus == NBUFS);
|
|
for (int i = 0; i < tester.n_sdus; i++) {
|
|
if (tester.sdus[i]->N_bytes != 1)
|
|
return -1;
|
|
if (*(tester.sdus[i]->msg) != i)
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
srslog::init();
|
|
|
|
auto& logger_rrc1 = srslog::fetch_basic_logger("RLC_AM_1", false);
|
|
logger_rrc1.set_level(srslog::basic_levels::debug);
|
|
logger_rrc1.set_hex_dump_max_size(-1);
|
|
auto& logger_rrc2 = srslog::fetch_basic_logger("RLC_AM_2", false);
|
|
logger_rrc2.set_level(srslog::basic_levels::debug);
|
|
logger_rrc2.set_hex_dump_max_size(-1);
|
|
|
|
if (basic_test()) {
|
|
printf("basic_test failed\n");
|
|
exit(-1);
|
|
};
|
|
|
|
if (concat_test()) {
|
|
printf("concat_test failed\n");
|
|
exit(-1);
|
|
};
|
|
|
|
if (segment_test(true)) {
|
|
printf("segment_test with in-order PDU reception failed\n");
|
|
exit(-1);
|
|
};
|
|
|
|
if (segment_test(false)) {
|
|
printf("segment_test with out-of-order PDU reception failed\n");
|
|
exit(-1);
|
|
};
|
|
|
|
if (retx_test()) {
|
|
printf("retx_test failed\n");
|
|
exit(-1);
|
|
};
|
|
|
|
if (segment_retx_test()) {
|
|
printf("segment_retx_test failed\n");
|
|
exit(-1);
|
|
};
|
|
|
|
if (resegment_test_1()) {
|
|
printf("resegment_test_1 failed\n");
|
|
exit(-1);
|
|
};
|
|
|
|
if (resegment_test_2()) {
|
|
printf("resegment_test_2 failed\n");
|
|
exit(-1);
|
|
};
|
|
|
|
if (resegment_test_3()) {
|
|
printf("resegment_test_3 failed\n");
|
|
exit(-1);
|
|
};
|
|
|
|
if (resegment_test_4()) {
|
|
printf("resegment_test_4 failed\n");
|
|
exit(-1);
|
|
};
|
|
|
|
if (resegment_test_5()) {
|
|
printf("resegment_test_5 failed\n");
|
|
exit(-1);
|
|
};
|
|
|
|
if (resegment_test_6()) {
|
|
printf("resegment_test_6 failed\n");
|
|
exit(-1);
|
|
};
|
|
|
|
logger_rrc1.set_hex_dump_max_size(100);
|
|
logger_rrc2.set_hex_dump_max_size(100);
|
|
if (resegment_test_7()) {
|
|
printf("resegment_test_7 failed\n");
|
|
exit(-1);
|
|
}
|
|
|
|
if (resegment_test_8()) {
|
|
printf("resegment_test_8 failed\n");
|
|
exit(-1);
|
|
};
|
|
logger_rrc1.set_hex_dump_max_size(-1);
|
|
logger_rrc2.set_hex_dump_max_size(-1);
|
|
|
|
if (reset_test()) {
|
|
printf("reset_test failed\n");
|
|
exit(-1);
|
|
};
|
|
|
|
if (stop_test()) {
|
|
printf("stop_test failed\n");
|
|
exit(-1);
|
|
};
|
|
|
|
if (resume_test()) {
|
|
printf("resume_test failed\n");
|
|
exit(-1);
|
|
};
|
|
|
|
if (status_pdu_test()) {
|
|
printf("status_pdu_test failed\n");
|
|
exit(-1);
|
|
};
|
|
|
|
return 0;
|
|
}
|