/** * Copyright 2013-2021 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/. * */ #ifndef SRSRAN_PDCP_NR_TEST_H #define SRSRAN_PDCP_NR_TEST_H #include "pdcp_base_test.h" #include "srsran/test/ue_test_interfaces.h" #include "srsran/upper/pdcp_entity_nr.h" struct pdcp_initial_state { uint32_t tx_next; uint32_t rx_next; uint32_t rx_deliv; uint32_t rx_reord; }; // Helper struct to hold a packet and the number of clock // ticks to run after writing the packet to test timeouts. struct pdcp_test_event_t { srsran::unique_byte_buffer_t pkt; uint32_t ticks = 0; }; /* * Constant definitions that are common to multiple tests */ // Encryption and Integrity Keys std::array k_int = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x30, 0x31}; std::array k_enc = {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x30, 0x31}; // Security Configuration, common to all tests. srsran::as_security_config_t sec_cfg = { k_int, k_enc, k_int, k_enc, srsran::INTEGRITY_ALGORITHM_ID_128_EIA2, srsran::CIPHERING_ALGORITHM_ID_128_EEA2, }; // Test SDUs for tx uint8_t sdu1[] = {0x18, 0xe2}; uint8_t sdu2[] = {0xde, 0xad}; // Test PDUs for rx (generated from SDU1) uint8_t pdu1_count0_snlen12[] = {0x80, 0x00, 0x8f, 0xe3, 0xe0, 0xdf, 0x82, 0x92}; uint8_t pdu1_count2048_snlen12[] = {0x88, 0x00, 0x8d, 0x2c, 0x47, 0x5e, 0xb1, 0x5b}; uint8_t pdu1_count4096_snlen12[] = {0x80, 0x00, 0x97, 0xbe, 0xa3, 0x32, 0xfa, 0x61}; uint8_t pdu1_count4294967295_snlen12[] = {0x8f, 0xff, 0x1e, 0x47, 0xe6, 0x86, 0x28, 0x6c}; uint8_t pdu1_count0_snlen18[] = {0x80, 0x00, 0x00, 0x8f, 0xe3, 0xe0, 0xdf, 0x82, 0x92}; uint8_t pdu1_count131072_snlen18[] = {0x82, 0x00, 0x00, 0x15, 0x01, 0xf4, 0xb0, 0xfc, 0xc5}; uint8_t pdu1_count262144_snlen18[] = {0x80, 0x00, 0x00, 0xc2, 0x47, 0xa8, 0xdd, 0xc0, 0x73}; uint8_t pdu1_count4294967295_snlen18[] = {0x83, 0xff, 0xff, 0x1e, 0x47, 0xe6, 0x86, 0x28, 0x6c}; // Test PDUs for rx (generated from SDU2) uint8_t pdu2_count1_snlen12[] = {0x80, 0x01, 0x5e, 0x3d, 0x64, 0xaf, 0xac, 0x7c}; uint8_t pdu2_count1_snlen18[] = {0x80, 0x00, 0x01, 0x5e, 0x3d, 0x64, 0xaf, 0xac, 0x7c}; // This is the normal initial state. All state variables are set to zero pdcp_initial_state normal_init_state = {}; // Some tests regarding COUNT wraparound take really long. // This puts the PCDC state closer to wraparound quickly. pdcp_initial_state near_wraparound_init_state = {.tx_next = 4294967295, .rx_next = 4294967295, .rx_deliv = 4294967295, .rx_reord = 0}; /* * Helper classes to reduce copy / pasting in setting up tests */ // PDCP helper to setup PDCP + Dummy class pdcp_nr_test_helper { public: pdcp_nr_test_helper(srsran::pdcp_config_t cfg, srsran::as_security_config_t sec_cfg_, srslog::basic_logger& logger) : rlc(logger), rrc(logger), gw(logger), pdcp(&rlc, &rrc, &gw, &stack.task_sched, logger, 0) { pdcp.configure(cfg); pdcp.config_security(sec_cfg_); pdcp.enable_integrity(srsran::DIRECTION_TXRX); pdcp.enable_encryption(srsran::DIRECTION_TXRX); } void set_pdcp_initial_state(pdcp_initial_state init_state) { pdcp.set_tx_next(init_state.tx_next); pdcp.set_rx_next(init_state.rx_next); pdcp.set_rx_deliv(init_state.rx_deliv); pdcp.set_rx_reord(init_state.rx_reord); } rlc_dummy rlc; rrc_dummy rrc; gw_dummy gw; srsue::stack_test_dummy stack; srsran::pdcp_entity_nr pdcp; }; // Helper function to generate PDUs srsran::unique_byte_buffer_t gen_expected_pdu(const srsran::unique_byte_buffer_t& in_sdu, uint32_t count, uint8_t pdcp_sn_len, srsran::as_security_config_t sec_cfg, srslog::basic_logger& logger) { srsran::pdcp_config_t cfg = {1, srsran::PDCP_RB_IS_DRB, srsran::SECURITY_DIRECTION_UPLINK, srsran::SECURITY_DIRECTION_DOWNLINK, 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(cfg, sec_cfg, logger); srsran::pdcp_entity_nr* pdcp = &pdcp_hlp.pdcp; rlc_dummy* rlc = &pdcp_hlp.rlc; pdcp_initial_state init_state = {}; init_state.tx_next = count; pdcp_hlp.set_pdcp_initial_state(init_state); srsran::unique_byte_buffer_t sdu = srsran::make_byte_buffer(); *sdu = *in_sdu; pdcp->write_sdu(std::move(sdu)); srsran::unique_byte_buffer_t out_pdu = srsran::make_byte_buffer(); rlc->get_last_sdu(out_pdu); return out_pdu; } // Helper function to generate vector of PDU from a vector of TX_NEXTs for generating expected pdus std::vector gen_expected_pdus_vector(const srsran::unique_byte_buffer_t& in_sdu, const std::vector& tx_nexts, uint8_t pdcp_sn_len, srsran::as_security_config_t sec_cfg_, srslog::basic_logger& logger) { std::vector pdu_vec; for (uint32_t tx_next : tx_nexts) { pdcp_test_event_t event; event.pkt = gen_expected_pdu(in_sdu, tx_next, pdcp_sn_len, sec_cfg_, logger); event.ticks = 0; pdu_vec.push_back(std::move(event)); } return pdu_vec; } #endif // SRSRAN_PDCP_NR_TEST_H