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lib,rlc_am_nr: extend unit tests for 18-bit SNs

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master
Robert Falkenberg 3 years ago
parent 5bb6cdec1e
commit b52a102021
1 changed files with 81 additions and 65 deletions
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136
lib/test/rlc/rlc_am_nr_test.cc
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@ -65,7 +65,7 @@ int window_checker_test(rlc_am_nr_sn_size_t sn_size)
timer_handler timers(8);
auto& test_logger = srslog::fetch_basic_logger("TESTER ");
test_delimit_logger delimiter("window checkers");
test_delimit_logger delimiter("window checkers (%d bit SN)", to_number(sn_size));
rlc_am rlc1(srsran_rat_t::nr, srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
rlc_am_nr_tx* tx = dynamic_cast<rlc_am_nr_tx*>(rlc1.get_tx());
@ -129,7 +129,7 @@ int retx_segmentation_required_checker_test(rlc_am_nr_sn_size_t sn_size)
timer_handler timers(8);
auto& test_logger = srslog::fetch_basic_logger("TESTER ");
test_delimit_logger delimiter("retx segmentation required checkers");
test_delimit_logger delimiter("retx segmentation required checkers (%d bit SN)", to_number(sn_size));
rlc_am rlc1(srsran_rat_t::nr, srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
rlc_am_nr_tx* tx = dynamic_cast<rlc_am_nr_tx*>(rlc1.get_tx());
@ -216,7 +216,7 @@ int basic_test(rlc_am_nr_sn_size_t sn_size)
byte_buffer_t pdu_bufs[NBUFS];
auto& test_logger = srslog::fetch_basic_logger("TESTER ");
test_delimit_logger delimiter("basic tx/rx");
test_delimit_logger delimiter("basic tx/rx (%d bit SN)", to_number(sn_size));
rlc_am rlc1(srsran_rat_t::nr, srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
rlc_am rlc2(srsran_rat_t::nr, srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
@ -325,7 +325,7 @@ int lost_pdu_test(rlc_am_nr_sn_size_t sn_size)
auto& test_logger = srslog::fetch_basic_logger("TESTER ");
rlc_am rlc1(srsran_rat_t::nr, srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
rlc_am rlc2(srsran_rat_t::nr, srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
test_delimit_logger delimiter("lost PDU");
test_delimit_logger delimiter("lost PDU (%d bit SN)", to_number(sn_size));
constexpr uint32_t payload_size = 1;
uint32_t header_size = sn_size == rlc_am_nr_sn_size_t::size12bits ? 2 : 3;
@ -460,7 +460,7 @@ int basic_segmentation_test(rlc_am_nr_sn_size_t sn_size)
rlc_am_tester tester;
timer_handler timers(8);
auto& test_logger = srslog::fetch_basic_logger("TESTER ");
test_delimit_logger delimiter("basic segmentation");
test_delimit_logger delimiter("basic segmentation (%d bit SN)", to_number(sn_size));
rlc_am rlc1(srsran_rat_t::nr, srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
rlc_am rlc2(srsran_rat_t::nr, srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
@ -541,7 +541,7 @@ int basic_segmentation_test(rlc_am_nr_sn_size_t sn_size)
return SRSRAN_SUCCESS;
}
int segment_retx_test()
int segment_retx_test(rlc_am_nr_sn_size_t sn_size)
{
rlc_am_tester tester;
timer_handler timers(8);
@ -550,18 +550,18 @@ int segment_retx_test()
auto& test_logger = srslog::fetch_basic_logger("TESTER ");
rlc_am rlc1(srsran_rat_t::nr, srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
rlc_am rlc2(srsran_rat_t::nr, srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
test_delimit_logger delimiter("segment retx PDU");
test_delimit_logger delimiter("segment retx PDU (%d bit SN)", to_number(sn_size));
rlc_am_nr_tx* tx1 = dynamic_cast<rlc_am_nr_tx*>(rlc1.get_tx());
rlc_am_nr_rx* rx1 = dynamic_cast<rlc_am_nr_rx*>(rlc1.get_rx());
rlc_am_nr_tx* tx2 = dynamic_cast<rlc_am_nr_tx*>(rlc2.get_tx());
rlc_am_nr_rx* rx2 = dynamic_cast<rlc_am_nr_rx*>(rlc2.get_rx());
if (not rlc1.configure(rlc_config_t::default_rlc_am_nr_config())) {
if (not rlc1.configure(rlc_config_t::default_rlc_am_nr_config(to_number(sn_size)))) {
return -1;
}
if (not rlc2.configure(rlc_config_t::default_rlc_am_nr_config())) {
if (not rlc2.configure(rlc_config_t::default_rlc_am_nr_config(to_number(sn_size)))) {
return -1;
}
@ -570,21 +570,24 @@ int segment_retx_test()
// Push 5 SDUs into RLC1
unique_byte_buffer_t sdu_bufs[NBUFS];
constexpr uint32_t payload_size = 3; // Give the SDU the size of 3 bytes
uint32_t header_size = sn_size == rlc_am_nr_sn_size_t::size12bits ? 2 : 3;
for (int i = 0; i < NBUFS; i++) {
sdu_bufs[i] = srsran::make_byte_buffer();
sdu_bufs[i]->msg[0] = i; // Write the index into the buffer
sdu_bufs[i]->N_bytes = 3; // Give each buffer a size of 3 bytes
sdu_bufs[i]->N_bytes = payload_size; // Give each buffer a size of 3 bytes
sdu_bufs[i]->md.pdcp_sn = i; // PDCP SN for notifications
rlc1.write_sdu(std::move(sdu_bufs[i]));
}
TESTASSERT_EQ(25, rlc1.get_buffer_state()); // 2 Bytes * NBUFFS (header size) + NBUFFS * 3 (data) = 25
uint32_t expected_buffer_state = (header_size + payload_size) * NBUFS;
TESTASSERT_EQ(expected_buffer_state, rlc1.get_buffer_state());
// Read 5 PDUs from RLC1 (1 byte each)
for (int i = 0; i < NBUFS; i++) {
uint32_t len = rlc1.read_pdu(pdu_bufs[i].msg, 5); // 2 bytes for header + 3 byte payload
uint32_t len = rlc1.read_pdu(pdu_bufs[i].msg, header_size + payload_size);
pdu_bufs[i].N_bytes = len;
TESTASSERT_EQ(5, len);
TESTASSERT_EQ(header_size + payload_size, len);
}
TESTASSERT_EQ(0, rlc1.get_buffer_state());
@ -608,7 +611,7 @@ int segment_retx_test()
// Assert status is correct
rlc_am_nr_status_pdu_t status_check = {};
rlc_am_nr_read_status_pdu(&status_buf, rlc_am_nr_sn_size_t::size12bits, &status_check);
rlc_am_nr_read_status_pdu(&status_buf, sn_size, &status_check);
TESTASSERT_EQ(3, status_check.ack_sn); // 3 is the next expected SN (i.e. the lost packet.)
// Write status PDU to RLC1
@ -621,18 +624,20 @@ int segment_retx_test()
}
// t-reassembly has expired. There should be a NACK in the status report.
TESTASSERT_EQ(5, rlc2.get_buffer_state());
constexpr uint32_t status_pdu_ack_size = 3;
uint32_t status_pdu_nack_size = sn_size == rlc_am_nr_sn_size_t::size12bits ? 2 : 3;
TESTASSERT_EQ(status_pdu_ack_size + status_pdu_nack_size, rlc2.get_buffer_state());
{
// Read status PDU from RLC2
byte_buffer_t status_buf;
int len = rlc2.read_pdu(status_buf.msg, 5);
int len = rlc2.read_pdu(status_buf.msg, status_pdu_ack_size + status_pdu_nack_size);
status_buf.N_bytes = len;
TESTASSERT_EQ(0, rlc2.get_buffer_state());
// Assert status is correct
rlc_am_nr_status_pdu_t status_check = {};
rlc_am_nr_read_status_pdu(&status_buf, rlc_am_nr_sn_size_t::size12bits, &status_check);
rlc_am_nr_read_status_pdu(&status_buf, sn_size, &status_check);
TESTASSERT_EQ(5, status_check.ack_sn); // 5 is the next expected SN.
TESTASSERT_EQ(1, status_check.N_nack); // We lost one PDU.
TESTASSERT_EQ(3, status_check.nacks[0].nack_sn); // Lost PDU SN=3.
@ -641,25 +646,29 @@ int segment_retx_test()
rlc1.write_pdu(status_buf.msg, status_buf.N_bytes);
// Check there is an Retx of SN=3
TESTASSERT_EQ(5, rlc1.get_buffer_state());
TESTASSERT_EQ(header_size + payload_size, rlc1.get_buffer_state());
}
constexpr uint32_t so_size = 2;
constexpr uint32_t segment_size = 1;
uint32_t pdu_size_first = header_size + segment_size;
uint32_t pdu_size_continued = header_size + so_size + segment_size;
{
// Re-transmit PDU in 3 segments
for (int i = 0; i < 3; i++) {
byte_buffer_t retx_buf;
uint32_t len = 0;
if (i == 0) {
len = rlc1.read_pdu(retx_buf.msg, 3);
TESTASSERT_EQ(3, len);
len = rlc1.read_pdu(retx_buf.msg, pdu_size_first);
TESTASSERT_EQ(pdu_size_first, len);
} else {
len = rlc1.read_pdu(retx_buf.msg, 5);
TESTASSERT_EQ(5, len);
len = rlc1.read_pdu(retx_buf.msg, pdu_size_continued);
TESTASSERT_EQ(pdu_size_continued, len);
}
retx_buf.N_bytes = len;
rlc_am_nr_pdu_header_t header_check = {};
uint32_t hdr_len = rlc_am_nr_read_data_pdu_header(&retx_buf, rlc_am_nr_sn_size_t::size12bits, &header_check);
uint32_t hdr_len = rlc_am_nr_read_data_pdu_header(&retx_buf, sn_size, &header_check);
// Double check header.
TESTASSERT_EQ(3, header_check.sn); // Double check RETX SN
if (i == 0) {
@ -679,6 +688,12 @@ int segment_retx_test()
rlc_bearer_metrics_t metrics1 = rlc1.get_metrics();
rlc_bearer_metrics_t metrics2 = rlc2.get_metrics();
uint32_t data_pdu_size = header_size + payload_size;
uint32_t total_tx_pdu_bytes1 = NBUFS * data_pdu_size + pdu_size_first + 2 * pdu_size_continued;
uint32_t total_rx_pdu_bytes1 = 2 * status_pdu_ack_size + status_pdu_nack_size; // Two status PDU (one with a NACK)
uint32_t total_tx_pdu_bytes2 = total_rx_pdu_bytes1;
uint32_t total_rx_pdu_bytes2 = (NBUFS - 1) * data_pdu_size + pdu_size_first + 2 * pdu_size_continued;
// SDU metrics
TESTASSERT_EQ(5, metrics1.num_tx_sdus);
TESTASSERT_EQ(0, metrics1.num_rx_sdus);
@ -688,9 +703,8 @@ int segment_retx_test()
// PDU metrics
TESTASSERT_EQ(5 + 3, metrics1.num_tx_pdus); // 3 re-transmissions
TESTASSERT_EQ(2, metrics1.num_rx_pdus); // Two status PDU
TESTASSERT_EQ(38, metrics1.num_tx_pdu_bytes); // 2 Bytes * NBUFFS (header size) + NBUFFS * 3 (data) +
// 3 (1 retx no SO) + 2 * 5 (2 retx with SO) = 38
TESTASSERT_EQ(3 + 5, metrics1.num_rx_pdu_bytes); // Two status PDU (one with a NACK)
TESTASSERT_EQ(total_tx_pdu_bytes1, metrics1.num_tx_pdu_bytes);
TESTASSERT_EQ(total_rx_pdu_bytes1, metrics1.num_rx_pdu_bytes);
TESTASSERT_EQ(0, metrics1.num_lost_sdus); // No lost SDUs
// PDU metrics
@ -702,8 +716,9 @@ int segment_retx_test()
// SDU metrics
TESTASSERT_EQ(2, metrics2.num_tx_pdus); // Two status PDUs
TESTASSERT_EQ(7, metrics2.num_rx_pdus); // 7 PDUs (8 tx'ed, but one was lost)
TESTASSERT_EQ(5 + 3, metrics2.num_tx_pdu_bytes); // Two status PDU (one with a NACK)
TESTASSERT_EQ(33, metrics2.num_rx_pdu_bytes); // 2 Bytes * (NBUFFS-1) (header size) + (NBUFFS-1) * 3 (data)
TESTASSERT_EQ(total_tx_pdu_bytes2, metrics2.num_tx_pdu_bytes);
TESTASSERT_EQ(total_rx_pdu_bytes2,
metrics2.num_rx_pdu_bytes); // 2 Bytes * (NBUFFS-1) (header size) + (NBUFFS-1) * 3 (data)
// 3 (1 retx no SO) + 2 * 5 (2 retx with SO) = 33
TESTASSERT_EQ(0, metrics2.num_lost_sdus); // No lost SDUs
@ -713,7 +728,7 @@ int segment_retx_test()
return SRSRAN_SUCCESS;
}
int retx_segment_test()
int retx_segment_test(rlc_am_nr_sn_size_t sn_size)
{
rlc_am_tester tester;
timer_handler timers(8);
@ -721,18 +736,18 @@ int retx_segment_test()
auto& test_logger = srslog::fetch_basic_logger("TESTER ");
rlc_am rlc1(srsran_rat_t::nr, srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
rlc_am rlc2(srsran_rat_t::nr, srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
test_delimit_logger delimiter("retx segment PDU");
test_delimit_logger delimiter("retx segment PDU (%d bit SN)", to_number(sn_size));
rlc_am_nr_tx* tx1 = dynamic_cast<rlc_am_nr_tx*>(rlc1.get_tx());
rlc_am_nr_rx* rx1 = dynamic_cast<rlc_am_nr_rx*>(rlc1.get_rx());
rlc_am_nr_tx* tx2 = dynamic_cast<rlc_am_nr_tx*>(rlc2.get_tx());
rlc_am_nr_rx* rx2 = dynamic_cast<rlc_am_nr_rx*>(rlc2.get_rx());
if (not rlc1.configure(rlc_config_t::default_rlc_am_nr_config())) {
if (not rlc1.configure(rlc_config_t::default_rlc_am_nr_config(to_number(sn_size)))) {
return -1;
}
if (not rlc2.configure(rlc_config_t::default_rlc_am_nr_config())) {
if (not rlc2.configure(rlc_config_t::default_rlc_am_nr_config(to_number(sn_size)))) {
return -1;
}
@ -792,7 +807,7 @@ int retx_segment_test()
// Assert status is correct
rlc_am_nr_status_pdu_t status_check = {};
rlc_am_nr_read_status_pdu(&status_buf, rlc_am_nr_sn_size_t::size12bits, &status_check);
rlc_am_nr_read_status_pdu(&status_buf, sn_size, &status_check);
TESTASSERT_EQ(1, status_check.ack_sn); // 1 is the next expected SN (i.e. the first lost packet.)
// Write status PDU to RLC1
@ -817,7 +832,7 @@ int retx_segment_test()
// Assert status is correct
rlc_am_nr_status_pdu_t status_check = {};
rlc_am_nr_read_status_pdu(&status_buf, rlc_am_nr_sn_size_t::size12bits, &status_check);
rlc_am_nr_read_status_pdu(&status_buf, sn_size, &status_check);
TESTASSERT_EQ(5, status_check.ack_sn); // 5 is the next expected SN.
TESTASSERT_EQ(3, status_check.N_nack); // We lost one PDU.
TESTASSERT_EQ(1, status_check.nacks[0].nack_sn); // Lost SDU on SN=1.
@ -855,7 +870,7 @@ int retx_segment_test()
retx_buf.N_bytes = len;
rlc_am_nr_pdu_header_t header_check = {};
uint32_t hdr_len = rlc_am_nr_read_data_pdu_header(&retx_buf, rlc_am_nr_sn_size_t::size12bits, &header_check);
uint32_t hdr_len = rlc_am_nr_read_data_pdu_header(&retx_buf, sn_size, &header_check);
// Double check header.
if (i == 0) {
TESTASSERT_EQ(1, header_check.sn); // Double check RETX SN
@ -918,7 +933,7 @@ int retx_segment_test()
// This test checks whether RLC informs upper layer when max retransmission has been reached
// due to lost SDUs as a whole
int max_retx_lost_sdu_test()
int max_retx_lost_sdu_test(rlc_am_nr_sn_size_t sn_size)
{
rlc_am_tester tester;
timer_handler timers(8);
@ -928,9 +943,9 @@ int max_retx_lost_sdu_test()
rlc_am rlc1(srsran_rat_t::nr, srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
srslog::fetch_basic_logger("RLC_AM_1").set_hex_dump_max_size(100);
srslog::fetch_basic_logger("RLC").set_hex_dump_max_size(100);
test_delimit_logger delimiter("max retx lost SDU");
test_delimit_logger delimiter("max retx lost SDU (%d bit SN)", to_number(sn_size));
const rlc_config_t rlc_cfg = rlc_config_t::default_rlc_am_nr_config();
const rlc_config_t rlc_cfg = rlc_config_t::default_rlc_am_nr_config(to_number(sn_size));
if (not rlc1.configure(rlc_cfg)) {
return SRSRAN_ERROR;
}
@ -988,7 +1003,7 @@ int max_retx_lost_sdu_test()
// This test checks whether RLC informs upper layer when max retransmission has been reached
// due to lost SDU segments
int max_retx_lost_segments_test()
int max_retx_lost_segments_test(rlc_am_nr_sn_size_t sn_size)
{
rlc_am_tester tester;
timer_handler timers(8);
@ -998,9 +1013,9 @@ int max_retx_lost_segments_test()
rlc_am rlc1(srsran_rat_t::nr, srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
srslog::fetch_basic_logger("RLC_AM_1").set_hex_dump_max_size(100);
srslog::fetch_basic_logger("RLC").set_hex_dump_max_size(100);
test_delimit_logger delimiter("max retx lost SDU segment");
test_delimit_logger delimiter("max retx lost SDU segment (%d bit SN)", to_number(sn_size));
const rlc_config_t rlc_cfg = rlc_config_t::default_rlc_am_nr_config();
const rlc_config_t rlc_cfg = rlc_config_t::default_rlc_am_nr_config(to_number(sn_size));
if (not rlc1.configure(rlc_cfg)) {
return SRSRAN_ERROR;
}
@ -1094,7 +1109,7 @@ int max_retx_lost_segments_test()
}
// This test checks the correct functioning of RLC discard functionality
int discard_test()
int discard_test(rlc_am_nr_sn_size_t sn_size)
{
rlc_am_tester tester;
timer_handler timers(8);
@ -1102,16 +1117,17 @@ int discard_test()
auto& test_logger = srslog::fetch_basic_logger("TESTER ");
rlc_am rlc1(srsran_rat_t::nr, srslog::fetch_basic_logger("RLC_AM_1"), 1, &tester, &tester, &timers);
rlc_am rlc2(srsran_rat_t::nr, srslog::fetch_basic_logger("RLC_AM_2"), 1, &tester, &tester, &timers);
test_delimit_logger delimiter("discard test (%d bit SN)", to_number(sn_size));
srslog::fetch_basic_logger("RLC_AM_1").set_hex_dump_max_size(100);
srslog::fetch_basic_logger("RLC_AM_2").set_hex_dump_max_size(100);
srslog::fetch_basic_logger("RLC").set_hex_dump_max_size(100);
if (not rlc1.configure(rlc_config_t::default_rlc_am_nr_config())) {
if (not rlc1.configure(rlc_config_t::default_rlc_am_nr_config(to_number(sn_size)))) {
return SRSRAN_ERROR;
}
if (not rlc2.configure(rlc_config_t::default_rlc_am_nr_config())) {
if (not rlc2.configure(rlc_config_t::default_rlc_am_nr_config(to_number(sn_size)))) {
return SRSRAN_ERROR;
}
@ -1165,7 +1181,7 @@ int discard_test()
TESTASSERT((2 + 7) == len);
// Check that we don't have any SN gaps
rlc_am_nr_pdu_header_t header = {};
rlc_am_nr_read_data_pdu_header(pdu.get(), rlc_am_nr_sn_size_t::size12bits, &header);
rlc_am_nr_read_data_pdu_header(pdu.get(), sn_size, &header);
TESTASSERT(header.sn == i);
}
}
@ -1219,20 +1235,20 @@ int main()
// start log back-end
srslog::init();
TESTASSERT(window_checker_test(rlc_am_nr_sn_size_t::size12bits) == SRSRAN_SUCCESS);
TESTASSERT(window_checker_test(rlc_am_nr_sn_size_t::size18bits) == SRSRAN_SUCCESS);
TESTASSERT(retx_segmentation_required_checker_test(rlc_am_nr_sn_size_t::size12bits) == SRSRAN_SUCCESS);
TESTASSERT(retx_segmentation_required_checker_test(rlc_am_nr_sn_size_t::size18bits) == SRSRAN_SUCCESS);
TESTASSERT(basic_test(rlc_am_nr_sn_size_t::size12bits) == SRSRAN_SUCCESS);
TESTASSERT(basic_test(rlc_am_nr_sn_size_t::size18bits) == SRSRAN_SUCCESS);
TESTASSERT(lost_pdu_test(rlc_am_nr_sn_size_t::size12bits) == SRSRAN_SUCCESS);
TESTASSERT(lost_pdu_test(rlc_am_nr_sn_size_t::size18bits) == SRSRAN_SUCCESS);
TESTASSERT(basic_segmentation_test(rlc_am_nr_sn_size_t::size12bits) == SRSRAN_SUCCESS);
TESTASSERT(basic_segmentation_test(rlc_am_nr_sn_size_t::size18bits) == SRSRAN_SUCCESS);
TESTASSERT(segment_retx_test() == SRSRAN_SUCCESS);
TESTASSERT(retx_segment_test() == SRSRAN_SUCCESS);
TESTASSERT(max_retx_lost_sdu_test() == SRSRAN_SUCCESS);
TESTASSERT(max_retx_lost_segments_test() == SRSRAN_SUCCESS);
TESTASSERT(discard_test() == SRSRAN_SUCCESS);
std::initializer_list<rlc_am_nr_sn_size_t> sn_sizes = {rlc_am_nr_sn_size_t::size12bits,
rlc_am_nr_sn_size_t::size18bits};
for (auto sn_size : sn_sizes) {
TESTASSERT(window_checker_test(sn_size) == SRSRAN_SUCCESS);
TESTASSERT(retx_segmentation_required_checker_test(sn_size) == SRSRAN_SUCCESS);
TESTASSERT(basic_test(sn_size) == SRSRAN_SUCCESS);
TESTASSERT(lost_pdu_test(sn_size) == SRSRAN_SUCCESS);
TESTASSERT(basic_segmentation_test(sn_size) == SRSRAN_SUCCESS);
TESTASSERT(segment_retx_test(sn_size) == SRSRAN_SUCCESS);
}
rlc_am_nr_sn_size_t sns = rlc_am_nr_sn_size_t::size12bits;
TESTASSERT(retx_segment_test(sns) == SRSRAN_SUCCESS); // Fixme
TESTASSERT(max_retx_lost_sdu_test(sns) == SRSRAN_SUCCESS); // Fixme
TESTASSERT(max_retx_lost_segments_test(sns) == SRSRAN_SUCCESS); // Fixme
TESTASSERT(discard_test(sns) == SRSRAN_SUCCESS); // Fixme
return SRSRAN_SUCCESS;
}

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