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@ -27,31 +27,38 @@
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using namespace srsenb;
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const uint32_t seed = std::chrono::system_clock::now().time_since_epoch().count();
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int test_retx_prb_inf(srsenb::lch_manager& lch_handler, int lcid, uint32_t pdu_size)
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/// Tests if a PDU was allocated with lcid and pdu_size bytes
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int test_pdu_alloc_successful(srsenb::lch_manager& lch_handler,
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sched_interface::dl_sched_pdu_t& pdu,
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int lcid,
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uint32_t pdu_size)
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{
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TESTASSERT(lch_handler.get_max_prio_lcid() == lcid);
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TESTASSERT(lch_handler.alloc_rlc_pdu(&pdu, pdu_size) == (int)pdu_size);
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TESTASSERT(pdu.lcid == (uint32_t)lcid);
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TESTASSERT(pdu.nbytes == pdu_size);
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return SRSLTE_SUCCESS;
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}
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int test_retx_until_empty(srsenb::lch_manager& lch_handler, int lcid, uint32_t pdu_size)
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{
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uint32_t nof_pdus = lch_handler.get_dl_retx(lcid) / pdu_size;
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sched_interface::dl_sched_pdu_t pdu;
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for (uint32_t i = 0; i < nof_pdus; ++i) {
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TESTASSERT(lch_handler.get_max_prio_lcid() == lcid);
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TESTASSERT(lch_handler.alloc_rlc_pdu(&pdu, pdu_size) == (int)pdu_size);
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TESTASSERT(pdu.lcid == (uint32_t)lcid);
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TESTASSERT(pdu.nbytes == pdu_size);
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TESTASSERT(test_pdu_alloc_successful(lch_handler, pdu, lcid, pdu_size) == SRSLTE_SUCCESS);
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TESTASSERT(lch_handler.get_dl_retx(lcid) == (int)((nof_pdus - i - 1) * pdu_size));
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}
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return nof_pdus * pdu_size;
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}
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int test_newtx_prb_inf(srsenb::lch_manager& lch_handler, int lcid, uint32_t pdu_size)
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int test_newtx_until_empty(srsenb::lch_manager& lch_handler, int lcid, uint32_t pdu_size)
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{
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uint32_t nof_pdus = lch_handler.get_dl_tx(lcid) / pdu_size;
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sched_interface::dl_sched_pdu_t pdu;
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for (uint32_t i = 0; i < nof_pdus; ++i) {
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TESTASSERT(lch_handler.get_max_prio_lcid() == lcid);
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TESTASSERT(lch_handler.alloc_rlc_pdu(&pdu, pdu_size) == (int)pdu_size);
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TESTASSERT(pdu.lcid == (uint32_t)lcid);
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TESTASSERT(pdu.nbytes == pdu_size);
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TESTASSERT(test_pdu_alloc_successful(lch_handler, pdu, lcid, pdu_size) == SRSLTE_SUCCESS);
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TESTASSERT(lch_handler.get_dl_tx(lcid) == (int)((nof_pdus - i - 1) * pdu_size));
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}
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return nof_pdus * pdu_size;
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@ -81,27 +88,92 @@ int test_lc_ch_pbr_infinity()
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// TEST1 - retx of SRB1 is prioritized. Do not transmit other bearers until there are no SRB1 retxs
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int nof_pending_bytes = lch_handler.get_dl_retx(srsenb::RB_ID_SRB1);
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TESTASSERT(test_retx_prb_inf(lch_handler, srsenb::RB_ID_SRB1, 500) == nof_pending_bytes);
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TESTASSERT(test_retx_until_empty(lch_handler, srsenb::RB_ID_SRB1, 500) == nof_pending_bytes);
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// TEST2 - the DRB2 has lower prio level than SRB1, but has retxs
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nof_pending_bytes = lch_handler.get_dl_retx(srsenb::RB_ID_DRB2);
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TESTASSERT(test_retx_prb_inf(lch_handler, srsenb::RB_ID_DRB2, 500) == nof_pending_bytes);
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TESTASSERT(test_retx_until_empty(lch_handler, srsenb::RB_ID_DRB2, 500) == nof_pending_bytes);
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// TEST3 - the DRB1 has lower prio level, but has retxs
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nof_pending_bytes = lch_handler.get_dl_retx(srsenb::RB_ID_DRB1);
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TESTASSERT(test_retx_prb_inf(lch_handler, srsenb::RB_ID_DRB1, 500) == nof_pending_bytes);
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TESTASSERT(test_retx_until_empty(lch_handler, srsenb::RB_ID_DRB1, 500) == nof_pending_bytes);
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// TEST4 - The SRB1 newtx buffer is emptied before other bearers newtxs
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nof_pending_bytes = lch_handler.get_dl_tx(srsenb::RB_ID_SRB1);
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TESTASSERT(test_newtx_prb_inf(lch_handler, srsenb::RB_ID_SRB1, 500) == nof_pending_bytes);
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TESTASSERT(test_newtx_until_empty(lch_handler, srsenb::RB_ID_SRB1, 500) == nof_pending_bytes);
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// TEST5 - The DRB2 newtx buffer is emptied before DRB1 newtxs
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nof_pending_bytes = lch_handler.get_dl_tx(srsenb::RB_ID_DRB2);
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TESTASSERT(test_newtx_prb_inf(lch_handler, srsenb::RB_ID_DRB2, 500) == nof_pending_bytes);
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TESTASSERT(test_newtx_until_empty(lch_handler, srsenb::RB_ID_DRB2, 500) == nof_pending_bytes);
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// TEST6 - The DRB1 buffer is emptied
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nof_pending_bytes = lch_handler.get_dl_tx(srsenb::RB_ID_DRB1);
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TESTASSERT(test_newtx_prb_inf(lch_handler, srsenb::RB_ID_DRB1, 500) == nof_pending_bytes);
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TESTASSERT(test_newtx_until_empty(lch_handler, srsenb::RB_ID_DRB1, 500) == nof_pending_bytes);
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return SRSLTE_SUCCESS;
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}
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int test_lc_ch_pbr_finite()
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{
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srsenb::lch_manager lch_handler;
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sched_interface::dl_sched_pdu_t pdu;
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srsenb::sched_interface::ue_cfg_t ue_cfg = generate_default_ue_cfg();
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ue_cfg = generate_setup_ue_cfg(ue_cfg);
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ue_cfg.ue_bearers[srsenb::RB_ID_SRB1] = {};
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ue_cfg.ue_bearers[srsenb::RB_ID_SRB1].direction = sched_interface::ue_bearer_cfg_t::BOTH;
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ue_cfg.ue_bearers[srsenb::RB_ID_DRB1] = {};
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ue_cfg.ue_bearers[srsenb::RB_ID_DRB1].direction = sched_interface::ue_bearer_cfg_t::BOTH;
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ue_cfg.ue_bearers[srsenb::RB_ID_DRB1].pbr = 256; // kBps
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ue_cfg.ue_bearers[srsenb::RB_ID_DRB1].bsd = 50; // msec
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ue_cfg.ue_bearers[srsenb::RB_ID_DRB1].priority = 5;
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ue_cfg.ue_bearers[srsenb::RB_ID_DRB2] = {};
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ue_cfg.ue_bearers[srsenb::RB_ID_DRB2].direction = sched_interface::ue_bearer_cfg_t::BOTH;
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ue_cfg.ue_bearers[srsenb::RB_ID_DRB2].pbr = 8; // kBps
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ue_cfg.ue_bearers[srsenb::RB_ID_DRB2].bsd = 50; // msec
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ue_cfg.ue_bearers[srsenb::RB_ID_DRB2].priority = 3;
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lch_handler.set_cfg(ue_cfg);
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for (uint32_t i = 0; i < 50; ++i) {
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lch_handler.new_tti();
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}
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// Bj={0, infinity, 0, 12800, 400}
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lch_handler.dl_buffer_state(srsenb::RB_ID_SRB1, 50000, 1000);
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lch_handler.dl_buffer_state(srsenb::RB_ID_DRB1, 50000, 1000);
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lch_handler.dl_buffer_state(srsenb::RB_ID_DRB2, 50000, 0);
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// TEST1 - SRB1 retxs are emptied first
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int nof_pending_bytes = lch_handler.get_dl_retx(srsenb::RB_ID_SRB1);
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TESTASSERT(test_retx_until_empty(lch_handler, srsenb::RB_ID_SRB1, 500) == nof_pending_bytes);
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// TEST2 - DRB1 retxs are emptied
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nof_pending_bytes = lch_handler.get_dl_retx(srsenb::RB_ID_DRB1);
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TESTASSERT(test_retx_until_empty(lch_handler, srsenb::RB_ID_DRB1, 500) == nof_pending_bytes);
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// TEST3 - SRB1 newtxs are emptied (PBR==infinity)
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nof_pending_bytes = lch_handler.get_dl_tx(srsenb::RB_ID_SRB1);
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TESTASSERT(test_newtx_until_empty(lch_handler, srsenb::RB_ID_SRB1, 500) == nof_pending_bytes);
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// TEST4 - DRB2 has higher priority so it gets allocated until Bj <= 0
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TESTASSERT(test_pdu_alloc_successful(lch_handler, pdu, srsenb::RB_ID_DRB2, 200) == SRSLTE_SUCCESS);
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// Bj={0, infinity, 0, 12800, 200}
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TESTASSERT(test_pdu_alloc_successful(lch_handler, pdu, srsenb::RB_ID_DRB2, 600) == SRSLTE_SUCCESS);
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// Bj={0, infinity, 0, 256000, -400}
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// TEST5 - DRB1 has lower prio, but DRB2 Bj <= 0.
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for (uint32_t i = 0; i < 50; ++i) {
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lch_handler.new_tti();
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TESTASSERT(test_pdu_alloc_successful(lch_handler, pdu, srsenb::RB_ID_DRB1, 50) == SRSLTE_SUCCESS);
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}
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// TEST6 - new tti restores DRB2 Bj>=0, and DRB2 gets allocated
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lch_handler.new_tti();
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// Bj={0, infinity, 0, 256000, 8}
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TESTASSERT(test_pdu_alloc_successful(lch_handler, pdu, srsenb::RB_ID_DRB2, 50) == SRSLTE_SUCCESS);
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// Bj={0, infinity, 0, 256000, -42}
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lch_handler.new_tti();
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TESTASSERT(test_pdu_alloc_successful(lch_handler, pdu, srsenb::RB_ID_DRB1, 50) == SRSLTE_SUCCESS);
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return SRSLTE_SUCCESS;
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}
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@ -113,5 +185,6 @@ int main()
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srslte::logmap::get("TEST")->set_level(srslte::LOG_LEVEL_INFO);
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TESTASSERT(test_lc_ch_pbr_infinity() == SRSLTE_SUCCESS);
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TESTASSERT(test_lc_ch_pbr_finite() == SRSLTE_SUCCESS);
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srslte::console("Success\n");
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}
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