/** * * \section COPYRIGHT * * Copyright 2013-2020 Software Radio Systems Limited * * By using this file, you agree to the terms and conditions set * forth in the LICENSE file which can be found at the top level of * the distribution. * */ #include "pdcp_lte_test.h" #include /* * Genric function to test reception of in-sequence packets */ int test_rx(std::vector events, const srslte::pdcp_lte_state_t& init_state, uint8_t pdcp_sn_len, srslte::pdcp_rb_type_t rb_type, uint32_t n_sdus_exp, const srslte::unique_byte_buffer_t& sdu_exp, srslog::basic_logger& logger) { srslte::pdcp_config_t cfg_rx = {1, rb_type, srslte::SECURITY_DIRECTION_DOWNLINK, srslte::SECURITY_DIRECTION_UPLINK, pdcp_sn_len, srslte::pdcp_t_reordering_t::ms500, srslte::pdcp_discard_timer_t::infinity}; pdcp_lte_test_helper pdcp_hlp_rx(cfg_rx, sec_cfg, logger); srslte::pdcp_entity_lte* pdcp_rx = &pdcp_hlp_rx.pdcp; gw_dummy* gw_rx = &pdcp_hlp_rx.gw; rrc_dummy* rrc_rx = &pdcp_hlp_rx.rrc; srsue::stack_test_dummy* stack = &pdcp_hlp_rx.stack; pdcp_hlp_rx.set_pdcp_initial_state(init_state); // Generate test message and encript/decript SDU. for (pdcp_test_event_t& event : events) { // Decript and integrity check the PDU pdcp_rx->write_pdu(std::move(event.pkt)); for (uint32_t i = 0; i < event.ticks; ++i) { stack->run_tti(); } } // Test if the number of RX packets if (rb_type == srslte::PDCP_RB_IS_DRB) { TESTASSERT(gw_rx->rx_count == n_sdus_exp); if (n_sdus_exp > 0) { srslte::unique_byte_buffer_t sdu_act = srslte::make_byte_buffer(); gw_rx->get_last_pdu(sdu_act); TESTASSERT(compare_two_packets(sdu_exp, sdu_act) == 0); } } else { TESTASSERT(rrc_rx->rx_count == n_sdus_exp); if (n_sdus_exp > 0) { srslte::unique_byte_buffer_t sdu_act = srslte::make_byte_buffer(); rrc_rx->get_last_pdu(sdu_act); TESTASSERT(compare_two_packets(sdu_exp, sdu_act) == 0); } } return 0; } /* * RX Test: PDCP Entity with SN LEN = 5 and 12. * PDCP entity configured with EIA2 and EEA2 */ int test_rx_all(srslog::basic_logger& logger) { // Test SDUs srslte::unique_byte_buffer_t tst_sdu1 = srslte::make_byte_buffer(); // SDU 1 tst_sdu1->append_bytes(sdu1, sizeof(sdu1)); srslte::unique_byte_buffer_t tst_sdu2 = srslte::make_byte_buffer(); // SDU 2 tst_sdu2->append_bytes(sdu2, sizeof(sdu2)); /* * RX Test 1: PDCP LTE Entity with SN LEN = 5 * Test in-sequence reception of 32 packets. * This tests correct handling of HFN in the case of SN wraparound (SN LEN 5) */ { std::vector test1_counts(2); // Test two packets std::iota(test1_counts.begin(), test1_counts.end(), 31); // Starting at COUNT 31 std::vector test1_pdus = gen_expected_pdus_vector( tst_sdu1, test1_counts, srslte::PDCP_SN_LEN_5, srslte::PDCP_RB_IS_SRB, sec_cfg, logger); srslte::pdcp_lte_state_t test1_init_state = { .next_pdcp_tx_sn = 0, .tx_hfn = 0, .rx_hfn = 0, .next_pdcp_rx_sn = 31, .last_submitted_pdcp_rx_sn = 30}; TESTASSERT(test_rx(std::move(test1_pdus), test1_init_state, srslte::PDCP_SN_LEN_5, srslte::PDCP_RB_IS_SRB, 2, tst_sdu1, logger) == 0); } /* * RX Test 2: PDCP LTE Entity with SN LEN = 12 * Test in-sequence reception of 4096 packets. * This tests correct handling of HFN in the case of SN wraparound (SN LEN 12) */ { std::vector test_counts(2); // Test two packets std::iota(test_counts.begin(), test_counts.end(), 4095); // Starting at COUNT 4095 std::vector test_pdus = gen_expected_pdus_vector( tst_sdu1, test_counts, srslte::PDCP_SN_LEN_12, srslte::PDCP_RB_IS_DRB, sec_cfg, logger); srslte::pdcp_lte_state_t test_init_state = { .next_pdcp_tx_sn = 0, .tx_hfn = 0, .rx_hfn = 0, .next_pdcp_rx_sn = 4095, .last_submitted_pdcp_rx_sn = 4094}; TESTASSERT(test_rx(std::move(test_pdus), test_init_state, srslte::PDCP_SN_LEN_12, srslte::PDCP_RB_IS_DRB, 2, tst_sdu1, logger) == 0); } /* * RX Test 3: PDCP LTE Entity with SN LEN = 12 * Test reception of a dublicate SN, the duplicate should just be dropped. */ { std::vector test_counts(2); // Test two packets std::iota(test_counts.begin(), test_counts.end(), 31); // Starting at COUNT 31 std::vector test_pdus = gen_expected_pdus_vector( tst_sdu1, test_counts, srslte::PDCP_SN_LEN_12, srslte::PDCP_RB_IS_DRB, sec_cfg, logger); srslte::pdcp_lte_state_t test_init_state = { .next_pdcp_tx_sn = 0, .tx_hfn = 0, .rx_hfn = 0, .next_pdcp_rx_sn = 32, .last_submitted_pdcp_rx_sn = 31}; TESTASSERT(test_rx(std::move(test_pdus), test_init_state, srslte::PDCP_SN_LEN_12, srslte::PDCP_RB_IS_DRB, test_counts.size() - 1, tst_sdu1, logger) == 0); } return SRSLTE_SUCCESS; } // Basic test to verify the correct handling of PDCP status PDUs on DRBs // As long as we don't implement status reporting, the PDU shall be dropped int test_rx_control_pdu(srslog::basic_logger& logger) { const uint8_t pdcp_status_report_long[] = {0x0a, 0xc9, 0x3c}; std::vector pdu_vec; pdcp_test_event_t event; event.pkt = srslte::make_byte_buffer(); memcpy(event.pkt->msg, pdcp_status_report_long, sizeof(pdcp_status_report_long)); event.pkt->N_bytes = sizeof(pdcp_status_report_long); pdu_vec.push_back(std::move(event)); srslte::unique_byte_buffer_t tst_sdu1 = srslte::make_byte_buffer(); srslte::pdcp_lte_state_t test_init_state = { .next_pdcp_tx_sn = 0, .tx_hfn = 0, .rx_hfn = 0, .next_pdcp_rx_sn = 32, .last_submitted_pdcp_rx_sn = 31}; TESTASSERT( test_rx( std::move(pdu_vec), test_init_state, srslte::PDCP_SN_LEN_12, srslte::PDCP_RB_IS_DRB, 0, tst_sdu1, logger) == 0); return SRSLTE_SUCCESS; } // Setup all tests int run_all_tests() { // Setup log auto& logger = srslog::fetch_basic_logger("PDCP LTE Test RX", false); logger.set_level(srslog::basic_levels::debug); logger.set_hex_dump_max_size(128); TESTASSERT(test_rx_all(logger) == 0); TESTASSERT(test_rx_control_pdu(logger) == 0); return 0; } int main() { srslog::init(); if (run_all_tests() != SRSLTE_SUCCESS) { fprintf(stderr, "pdcp_nr_tests_rx() failed\n"); return SRSLTE_ERROR; } return SRSLTE_SUCCESS; }