/** * Copyright 2013-2022 Software Radio Systems Limited * * This file is part of srsRAN. * * srsRAN 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. * * srsRAN 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_nr_test.h" #include /* * Genric function to test reception of in-sequence packets */ int test_rx(std::vector events, const pdcp_initial_state& init_state, uint8_t pdcp_sn_len, uint32_t n_sdus_exp, const srsran::unique_byte_buffer_t& sdu_exp, srslog::basic_logger& logger) { srsran::pdcp_config_t cfg_rx = {1, srsran::PDCP_RB_IS_DRB, srsran::SECURITY_DIRECTION_DOWNLINK, srsran::SECURITY_DIRECTION_UPLINK, pdcp_sn_len, srsran::pdcp_t_reordering_t::ms500, srsran::pdcp_discard_timer_t::infinity, false, srsran::srsran_rat_t::nr}; pdcp_nr_test_helper pdcp_hlp_rx(cfg_rx, sec_cfg, logger); srsran::pdcp_entity_nr* pdcp_rx = &pdcp_hlp_rx.pdcp; gw_dummy* gw_rx = &pdcp_hlp_rx.gw; 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 TESTASSERT_EQ(gw_rx->rx_count, n_sdus_exp); srsran::unique_byte_buffer_t sdu_act = srsran::make_byte_buffer(); gw_rx->get_last_pdu(sdu_act); TESTASSERT(compare_two_packets(sdu_exp, sdu_act) == 0); return 0; } /* * RX Test: PDCP Entity with SN LEN = 12 and 18. * PDCP entity configured with EIA2 and EEA2 */ int test_rx_all(srslog::basic_logger& logger) { // Test SDUs srsran::unique_byte_buffer_t tst_sdu1 = srsran::make_byte_buffer(); // SDU 1 tst_sdu1->append_bytes(sdu1, sizeof(sdu1)); srsran::unique_byte_buffer_t tst_sdu2 = srsran::make_byte_buffer(); // SDU 2 tst_sdu2->append_bytes(sdu2, sizeof(sdu2)); /* * RX Test 1: PDCP Entity with SN LEN = 12 * Test in-sequence reception of 4097 packets. * This tests correct handling of HFN in the case of SN wraparound (SN LEN 12) */ { auto& test_logger = srslog::fetch_basic_logger("TESTER "); srsran::test_delimit_logger delimiter("RX COUNT [4095,4096], 12 bit SN"); std::vector test1_counts(2); // Test two packets std::iota(test1_counts.begin(), test1_counts.end(), 4095); // Starting at COUNT 4095 std::vector test1_pdus = gen_expected_pdus_vector(tst_sdu1, test1_counts, srsran::PDCP_SN_LEN_12, sec_cfg, logger); pdcp_initial_state test1_init_state = {.tx_next = 4095, .rx_next = 4095, .rx_deliv = 4095, .rx_reord = 0}; TESTASSERT(test_rx(std::move(test1_pdus), test1_init_state, srsran::PDCP_SN_LEN_12, 2, tst_sdu1, logger) == 0); } /* * RX Test 2: PDCP Entity with SN LEN = 12 * Test in-sequence reception of 4294967297 packets. * This tests correct handling of COUNT in the case of [HFN|SN] wraparound * Packet that wraparound should be dropped, so only one packet should be received at the GW. */ { auto& test_logger = srslog::fetch_basic_logger("TESTER "); srsran::test_delimit_logger delimiter("RX COUNT [4294967295,0], 12 bit SN"); std::vector test2_counts(2); // Test two packets std::iota(test2_counts.begin(), test2_counts.end(), 4294967295); // Starting at COUNT 4294967295 std::vector test2_pdus = gen_expected_pdus_vector(tst_sdu1, test2_counts, srsran::PDCP_SN_LEN_12, sec_cfg, logger); pdcp_initial_state test2_init_state = { .tx_next = 4294967295, .rx_next = 4294967295, .rx_deliv = 4294967295, .rx_reord = 0}; TESTASSERT(test_rx(std::move(test2_pdus), test2_init_state, srsran::PDCP_SN_LEN_12, 1, tst_sdu1, logger) == 0); } /* * RX Test 3: PDCP Entity with SN LEN = 18 * Test In-sequence reception of 262145 packets. * This tests correct handling of HFN in the case of SN wraparound (SN LEN 18) */ { auto& test_logger = srslog::fetch_basic_logger("TESTER "); srsran::test_delimit_logger delimiter("RX COUNT [262144,262145], 12 bit SN"); std::vector test3_counts(2); // Test two packets std::iota(test3_counts.begin(), test3_counts.end(), 262144); // Starting at COUNT 262144 std::vector test3_pdus = gen_expected_pdus_vector(tst_sdu1, test3_counts, srsran::PDCP_SN_LEN_18, sec_cfg, logger); pdcp_initial_state test3_init_state = {.tx_next = 262144, .rx_next = 262144, .rx_deliv = 262144, .rx_reord = 0}; TESTASSERT(test_rx(std::move(test3_pdus), test3_init_state, srsran::PDCP_SN_LEN_18, 2, tst_sdu1, logger) == 0); } /* * RX Test 4: PDCP Entity with SN LEN = 18 * Test in-sequence reception of 4294967297 packets. * This tests correct handling of COUNT in the case of [HFN|SN] wraparound */ { auto& test_logger = srslog::fetch_basic_logger("TESTER "); srsran::test_delimit_logger delimiter("RX COUNT [4294967295,4294967296], 18 bit SN"); std::vector test4_counts(2); // Test two packets std::iota(test4_counts.begin(), test4_counts.end(), 4294967295); // Starting at COUNT 4294967295 std::vector test4_pdus = gen_expected_pdus_vector(tst_sdu1, test4_counts, srsran::PDCP_SN_LEN_18, sec_cfg, logger); pdcp_initial_state test4_init_state = { .tx_next = 4294967295, .rx_next = 4294967295, .rx_deliv = 4294967295, .rx_reord = 0}; TESTASSERT(test_rx(std::move(test4_pdus), test4_init_state, srsran::PDCP_SN_LEN_18, 1, tst_sdu1, logger) == 0); } /* * RX Test 5: PDCP Entity with SN LEN = 12 * Test reception of two out-of-order packets, starting at COUNT 0. */ { auto& test_logger = srslog::fetch_basic_logger("TESTER "); srsran::test_delimit_logger delimiter("RX out-of-order COUNT [1,0], 12 bit SN"); std::vector test5_pdus; pdcp_initial_state test5_init_state = {}; // First PDU pdcp_test_event_t event_pdu1; event_pdu1.pkt = srsran::make_byte_buffer(); event_pdu1.pkt->append_bytes(pdu1_count0_snlen12, sizeof(pdu1_count0_snlen12)); // Second PDU pdcp_test_event_t event_pdu2; event_pdu2.pkt = srsran::make_byte_buffer(); event_pdu2.pkt->append_bytes(pdu2_count1_snlen12, sizeof(pdu2_count1_snlen12)); // Write PDUs out of order (first the pdu with COUNT 1 and COUNT 0 after) test5_pdus.push_back(std::move(event_pdu2)); test5_pdus.push_back(std::move(event_pdu1)); TESTASSERT(test_rx(std::move(test5_pdus), test5_init_state, srsran::PDCP_SN_LEN_12, 2, tst_sdu2, logger) == 0); } /* * RX Test 6: PDCP Entity with SN LEN = 18 * Test reception of two out-of-order packets, starting at COUNT 0. */ { auto& test_logger = srslog::fetch_basic_logger("TESTER "); srsran::test_delimit_logger delimiter("RX out-of-order COUNT [1,0], 18 bit SN"); std::vector test6_pdus; pdcp_initial_state test6_init_state = {}; // First PDU pdcp_test_event_t event_pdu1; event_pdu1.pkt = srsran::make_byte_buffer(); event_pdu1.pkt->append_bytes(pdu1_count0_snlen18, sizeof(pdu1_count0_snlen18)); // Second PDU pdcp_test_event_t event_pdu2; event_pdu2.pkt = srsran::make_byte_buffer(); event_pdu2.pkt->append_bytes(pdu2_count1_snlen18, sizeof(pdu2_count1_snlen18)); // Write PDUs out of order (first the pdu with COUNT 1 and COUNT 0 after) test6_pdus.push_back(std::move(event_pdu2)); test6_pdus.push_back(std::move(event_pdu1)); TESTASSERT(test_rx(std::move(test6_pdus), test6_init_state, srsran::PDCP_SN_LEN_18, 2, tst_sdu2, logger) == 0); } /* * RX Test 7: PDCP Entity with SN LEN = 12 * Test Reception of one out-of-order packet. */ { auto& test_logger = srslog::fetch_basic_logger("TESTER "); srsran::test_delimit_logger delimiter("RX out-of-order COUNT [1,0] t_reordering expired, 12 bit SN"); std::vector test7_pdus; pdcp_initial_state test7_init_state = {}; // First PDU pdcp_test_event_t event_pdu1; event_pdu1.pkt = srsran::make_byte_buffer(); event_pdu1.pkt->append_bytes(pdu2_count1_snlen12, sizeof(pdu2_count1_snlen12)); event_pdu1.ticks = 500; // Write PDUs out of order (first the pdu with COUNT 1 and COUNT 0 after) test7_pdus.push_back(std::move(event_pdu1)); TESTASSERT(test_rx(std::move(test7_pdus), test7_init_state, srsran::PDCP_SN_LEN_12, 1, tst_sdu2, logger) == 0); } /* * RX Test 8: PDCP Entity with SN LEN = 12 * Test reception of two duplicate PDUs, with COUNT 0. */ { srsran::test_delimit_logger delimiter("RX duplicate COUNTs [0,0], 12 bit SN"); std::vector test8_pdus; pdcp_initial_state test8_init_state = {}; // First PDU pdcp_test_event_t event_pdu1; event_pdu1.pkt = srsran::make_byte_buffer(); event_pdu1.pkt->append_bytes(pdu1_count0_snlen12, sizeof(pdu1_count0_snlen12)); // Second PDU pdcp_test_event_t event_pdu2; event_pdu2.pkt = srsran::make_byte_buffer(); event_pdu2.pkt->append_bytes(pdu1_count0_snlen12, sizeof(pdu1_count0_snlen12)); // Write PDUs out of order (first the pdu with COUNT 1 and COUNT 0 after) test8_pdus.push_back(std::move(event_pdu1)); test8_pdus.push_back(std::move(event_pdu2)); TESTASSERT(test_rx(std::move(test8_pdus), test8_init_state, srsran::PDCP_SN_LEN_12, 1, tst_sdu1, logger) == 0); } return 0; } // Setup all tests int run_all_tests() { // Setup log auto& logger = srslog::fetch_basic_logger("PDCP NR Test RX", false); logger.set_level(srslog::basic_levels::debug); logger.set_hex_dump_max_size(128); TESTASSERT(test_rx_all(logger) == 0); return 0; } int main() { srslog::init(); if (run_all_tests() != SRSRAN_SUCCESS) { fprintf(stderr, "pdcp_nr_tests_rx() failed\n"); return SRSRAN_ERROR; } return SRSRAN_SUCCESS; }