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mac_test: update tests involving BSR handling

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* split existing BSR test into dedicated test for short, long, and trunc
  BSR tests

* update MAC tests that include packing UL BSR.
  (After checking TS 36.321 again it seems we have reported old UL buffer states)
master
Andre Puschmann 4 years ago
parent 54eed11e1d
commit 92d76a5eb6
1 changed files with 143 additions and 52 deletions
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195
srsue/test/mac_test.cc
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@ -474,6 +474,7 @@ int mac_ul_sch_pdu_test1()
}
// Basic logical channel prioritization test with 3 SCH SDUs
// BSR is not triggered because BSR procedure isn't executed after pushing RLC PDUs
int mac_ul_logical_channel_prioritization_test1()
{
// PDU layout (21 B in total)
@ -570,29 +571,27 @@ int mac_ul_logical_channel_prioritization_test1()
}
// Similar test like above but with a much larger UL grant, we expect that each LCID is fully served
// BSR procedure is run after pushing RLC SDUs, so BSR is triggered.
// However, since all outstanding data can be fully transmitted, the BSR is canceled again.
int mac_ul_logical_channel_prioritization_test2()
{
// PDU layout (120 B in total)
// - 1 B MAC subheader for Short BSR
// PDU layout (115 B in total)
// - 2 B MAC subheader for SCH LCID=1
// - 2 B MAC subheader for SCH LCID=2
// - 2 B MAC subheader for SCH LCID=3
// - 1 B MAC subheader for Padding
// - 1 B MAC subheader for SCH LCID=3
//
// - 1 B Short BSR
// - 50 B MAC SDU for LCID=1
// - 40 B MAC SDU for LCID=2
// - 20 B MAC SDU for LCID=3
// - 1 B Padding
// =120 N
const uint8_t tv[] = {0x3d, 0x21, 0x32, 0x22, 0x28, 0x23, 0x14, 0x1f, 0x51, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
// =115 N
const uint8_t tv[] = {0x21, 0x32, 0x22, 0x28, 0x03, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02,
0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x02, 0x02, 0x02, 0x02,
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02,
0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03,
0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x00};
0x02, 0x02, 0x02, 0x02, 0x02, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03,
0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03};
srslte::log_filter rlc_log("RLC");
rlc_log.set_level(srslte::LOG_LEVEL_DEBUG);
@ -655,7 +654,7 @@ int mac_ul_logical_channel_prioritization_test2()
mac_grant.rnti = crnti; // make sure MAC picks it up as valid UL grant
mac_grant.tb.ndi_present = true;
mac_grant.tb.ndi = true;
mac_grant.tb.tbs = 120; // each LCID has more data to transmit than is available
mac_grant.tb.tbs = 115; // This is the minimum grant size to fit all pending SDUs
int cc_idx = 0;
// Send grant to MAC and get action for this TB, then call tb_decoded to unlock MAC
@ -766,10 +765,10 @@ int mac_ul_logical_channel_prioritization_test3()
return SRSLTE_SUCCESS;
}
// PDU with single SDU and short BSR
// PDU with single SDU and short BSR (entire RLC buffers are transmitted in MAC PDU)
int mac_ul_sch_pdu_with_short_bsr_test()
{
const uint8_t tv[] = {0x3f, 0x3d, 0x01, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01};
const uint8_t tv[] = {0x3f, 0x3d, 0x01, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01};
srslte::log_filter rlc_log("RLC");
rlc_log.set_level(srslte::LOG_LEVEL_DEBUG);
@ -788,31 +787,68 @@ int mac_ul_sch_pdu_with_short_bsr_test()
const uint16_t crnti = 0x1001;
mac.set_ho_rnti(crnti, 0);
// generate configs for two LCIDs with different priority and PBR
std::vector<logical_channel_config_t> lcids;
logical_channel_config_t config = {};
// The config of DRB1
config.lcid = 3;
config.lcg = 3;
config.PBR = 8;
config.BSD = 100; // 100ms
config.priority = 15;
lcids.push_back(config);
// write dummy data
rlc.write_sdu(1, 10);
// DRB2
config.lcid = 4;
config.lcg = 1;
config.PBR = 0;
config.priority = 7;
lcids.push_back(config);
// generate TTI
uint32 tti = 0;
stack.run_tti(tti++);
usleep(100);
// setup LCIDs in MAC
for (auto& channel : lcids) {
mac.setup_lcid(channel.lcid, channel.lcg, channel.priority, channel.PBR, channel.BSD);
// create UL action and grant and push MAC PDU
{
mac_interface_phy_lte::tb_action_ul_t ul_action = {};
mac_interface_phy_lte::mac_grant_ul_t mac_grant = {};
mac_grant.rnti = crnti; // make sure MAC picks it up as valid UL grant
mac_grant.tb.ndi_present = true;
mac_grant.tb.ndi = true;
mac_grant.tb.tbs = 14; // give room for MAC subheader, SDU and short BSR
int cc_idx = 0;
// Send grant to MAC and get action for this TB, then call tb_decoded to unlock MAC
mac.new_grant_ul(cc_idx, mac_grant, &ul_action);
// print generated PDU
mac_log->info_hex(ul_action.tb.payload, mac_grant.tb.tbs, "Generated PDU (%d B)\n", mac_grant.tb.tbs);
#if HAVE_PCAP
pcap_handle->write_ul_crnti(ul_action.tb.payload, mac_grant.tb.tbs, 0x1001, true, 1, 0);
#endif
TESTASSERT(memcmp(ul_action.tb.payload, tv, sizeof(tv)) == 0);
}
// make sure MAC PDU thread picks up before stopping
stack.run_tti(tti);
mac.stop();
return SRSLTE_SUCCESS;
}
// PDU with single SDU and short BSR reporting zero data to transmit
int mac_ul_sch_pdu_with_short_bsr_zero_test()
{
const uint8_t tv[] = {0x3f, 0x3d, 0x01, 0x02, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01};
srslte::log_filter rlc_log("RLC");
rlc_log.set_level(srslte::LOG_LEVEL_DEBUG);
rlc_log.set_hex_limit(100000);
// dummy layers
phy_dummy phy;
rlc_dummy rlc(&rlc_log);
rrc_dummy rrc;
stack_dummy stack;
// the actual MAC
mac mac("MAC", &stack.task_sched);
stack.init(&mac, &phy);
mac.init(&phy, &rlc, &rrc);
const uint16_t crnti = 0x1001;
mac.set_ho_rnti(crnti, 0);
// write dummy data
rlc.write_sdu(1, 10);
rlc.write_sdu(2, 2);
// generate TTI
uint32 tti = 0;
@ -850,7 +886,8 @@ int mac_ul_sch_pdu_with_short_bsr_test()
}
// PDU with only padding BSR (long BSR) and the rest padding
int mac_ul_sch_pdu_with_padding_bsr_test()
// Because there is no outstanding data, all LCGs are reported as zero
int mac_ul_sch_pdu_with_padding_long_bsr_test()
{
srslte::log_filter rlc_log("RLC");
rlc_log.set_level(srslte::LOG_LEVEL_DEBUG);
@ -871,7 +908,6 @@ int mac_ul_sch_pdu_with_padding_bsr_test()
// create UL action and grant and push MAC PDU
{
const uint8_t tv[] = {0x3e, 0x1f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
mac_interface_phy_lte::tb_action_ul_t ul_action = {};
@ -895,10 +931,68 @@ int mac_ul_sch_pdu_with_padding_bsr_test()
TESTASSERT(memcmp(ul_action.tb.payload, tv, sizeof(tv)) == 0);
}
// create UL action and grant and push MAC PDU
// make sure MAC PDU thread picks up before stopping
stack.run_tti(0);
mac.stop();
return SRSLTE_SUCCESS;
}
// PDU with truncated BSR as two LCGs have data to transmit
// LCG 1 has highest priority and 100 B to transmit
int mac_ul_sch_pdu_with_padding_trunc_bsr_test()
{
srslte::log_filter rlc_log("RLC");
rlc_log.set_level(srslte::LOG_LEVEL_DEBUG);
rlc_log.set_hex_limit(100000);
const uint8_t tv[] = {0x1c, 0x42};
// dummy layers
phy_dummy phy;
rlc_dummy rlc(&rlc_log);
rrc_dummy rrc;
stack_dummy stack;
// the actual MAC
mac mac("MAC", &stack.task_sched);
stack.init(&mac, &phy);
mac.init(&phy, &rlc, &rrc);
const uint16_t crnti = 0x1001;
mac.set_ho_rnti(crnti, 0);
// generate configs for two LCIDs with different priority and PBR
std::vector<logical_channel_config_t> lcids;
logical_channel_config_t config = {};
// The config of DRB1
config.lcid = 3;
config.lcg = 3;
config.PBR = 8; // 8 kByte/s
config.BSD = 100; // 100ms
config.priority = 15;
lcids.push_back(config);
// DRB2
config.lcid = 4;
config.lcg = 1;
config.PBR = 0; // no PBR
config.priority = 7; // higher prio
lcids.push_back(config);
// generate data for both
rlc.write_sdu(3, 10);
rlc.write_sdu(4, 100);
// setup LCIDs in MAC
for (auto& channel : lcids) {
mac.setup_lcid(channel.lcid, channel.lcg, channel.priority, channel.PBR, channel.BSD);
}
// run TTI
stack.run_tti(1);
usleep(100);
// create UL action and grant and push MAC PDU
{
const uint8_t tv[] = {0x1c, 0x50};
mac_interface_phy_lte::tb_action_ul_t ul_action = {};
mac_interface_phy_lte::mac_grant_ul_t mac_grant = {};
@ -910,14 +1004,6 @@ int mac_ul_sch_pdu_with_padding_bsr_test()
mac_grant.tb.tbs = 2; // give enough room for Padding BSR
int cc_idx = 0;
// Add data to multiple LCID
mac.setup_lcid(1, 1, 1, -1, 0);
mac.setup_lcid(2, 2, 2, -1, 0);
rlc.disable_read();
rlc.write_sdu(1, 10);
rlc.write_sdu(2, 100);
stack.run_tti(1);
// Send grant to MAC and get action for this TB, then call tb_decoded to unlock MAC
mac.new_grant_ul(cc_idx, mac_grant, &ul_action);
@ -1125,7 +1211,8 @@ int run_mac_ra_test(struct ra_test test, mac* mac, phy_dummy* phy, uint32_t* tti
{
uint32_t tti = *tti_state;
const uint8_t tv_msg3[] = {0x3c, 0x00, 0x01, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f};
// Msg3 has a Short BSR (indicating LCG3 with 100 B) and CCCH
const uint8_t tv_msg3[] = {0x3d, 0x00, 0xd0, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f, 0x0f};
const uint8_t tv_msg3_ce[] = {0x1b, 0x00, 0x65};
uint32_t msg4_len = 7;
@ -1383,8 +1470,7 @@ int mac_random_access_test()
mac.reset();
mac.set_contention_id(contention_id);
rlc.write_sdu(0, 6); // UL-CCCH with Msg3
rlc.write_sdu(3, 100); // DRB data on other LCG my_test.nof_msg3_retx = 0;
rlc.write_sdu(0, 6); // Add new UL-CCCH with Msg3 (DRB SDU still buffered)
// Test 4: RAR with valid RAPID. Msg3 transmitted, Msg4 received but invalid ConRes
// Contention resolution is defined in 5.1.5. If ConResID does not match, the ConRes is considered
@ -1522,12 +1608,17 @@ int main(int argc, char** argv)
}
if (mac_ul_sch_pdu_with_short_bsr_test()) {
printf("mac_ul_sch_pdu_with_long_bsr_test() test failed.\n");
printf("mac_ul_sch_pdu_with_short_bsr_test() test failed.\n");
return -1;
}
if (mac_ul_sch_pdu_with_padding_long_bsr_test()) {
printf("mac_ul_sch_pdu_with_padding_long_bsr_test() test failed.\n");
return -1;
}
if (mac_ul_sch_pdu_with_padding_bsr_test()) {
printf("mac_ul_sch_pdu_with_padding_bsr_test() test failed.\n");
if (mac_ul_sch_pdu_with_padding_trunc_bsr_test()) {
printf("mac_ul_sch_pdu_with_padding_trunc_bsr_test() test failed.\n");
return -1;
}

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