/* * Copyright 2013-2020 Software Radio Systems Limited * * This file is part of srsLTE. * * srsLTE is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of * the License, or (at your option) any later version. * * srsLTE is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * A copy of the GNU Affero General Public License can be found in * the LICENSE file in the top-level directory of this distribution * and at http://www.gnu.org/licenses/. * */ #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, srslte::byte_buffer_pool* pool, srslte::log_ref log) { 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, log); 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); srslte::unique_byte_buffer_t sdu_act = allocate_unique_buffer(*pool); 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); srslte::unique_byte_buffer_t sdu_act = allocate_unique_buffer(*pool); 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(srslte::byte_buffer_pool* pool, srslte::log_ref log) { // Test SDUs srslte::unique_byte_buffer_t tst_sdu1 = allocate_unique_buffer(*pool); // SDU 1 tst_sdu1->append_bytes(sdu1, sizeof(sdu1)); srslte::unique_byte_buffer_t tst_sdu2 = allocate_unique_buffer(*pool); // 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, pool, log); 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, pool, log) == 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, pool, log); 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, pool, log) == 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, pool, log); 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, pool, log) == 0); } return SRSLTE_SUCCESS; } // Setup all tests int run_all_tests(srslte::byte_buffer_pool* pool) { // Setup log srslte::log_ref log("PDCP LTE Test RX"); log->set_level(srslte::LOG_LEVEL_DEBUG); log->set_hex_limit(128); TESTASSERT(test_rx_all(pool, log) == 0); return 0; } int main() { if (run_all_tests(srslte::byte_buffer_pool::get_instance()) != SRSLTE_SUCCESS) { fprintf(stderr, "pdcp_nr_tests_rx() failed\n"); return SRSLTE_ERROR; } return SRSLTE_SUCCESS; }