mirror of https://github.com/PentHertz/srsLTE.git
141 lines
4.2 KiB
C++
141 lines
4.2 KiB
C++
/**
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* Copyright 2013-2021 Software Radio Systems Limited
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*
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* This file is part of srsRAN.
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*
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* srsRAN is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsRAN is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#include "srsran/common/test_common.h"
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#include "srsran/rlc/rlc_am_lte.h"
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#include <iostream>
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// Simple status PDU
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int simple_status_pdu_test1()
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{
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uint8_t pdu1[] = {0x00, 0x78};
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uint32_t PDU1_LEN = 2;
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srsran::rlc_status_pdu_t s1;
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srsran::byte_buffer_t b1, b2;
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memcpy(b1.msg, &pdu1[0], PDU1_LEN);
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b1.N_bytes = PDU1_LEN;
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rlc_am_read_status_pdu(&b1, &s1);
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TESTASSERT(s1.ack_sn == 30);
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TESTASSERT(s1.N_nack == 0);
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rlc_am_write_status_pdu(&s1, &b2);
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TESTASSERT(b2.N_bytes == PDU1_LEN);
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for (uint32_t i = 0; i < b2.N_bytes; i++) {
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TESTASSERT(b2.msg[i] == b1.msg[i]);
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}
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TESTASSERT(rlc_am_is_valid_status_pdu(s1));
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return SRSRAN_SUCCESS;
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}
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// Status PDU with 4 NACKs
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int status_pdu_with_nacks_test1()
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{
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uint8_t pdu2[] = {0x00, 0x22, 0x00, 0x40, 0x0C, 0x01, 0xC0, 0x20};
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uint32_t PDU2_LEN = 8;
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srsran::rlc_status_pdu_t s2;
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srsran::byte_buffer_t b1, b2;
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memcpy(b1.msg, &pdu2[0], PDU2_LEN);
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b1.N_bytes = PDU2_LEN;
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rlc_am_read_status_pdu(&b1, &s2);
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TESTASSERT(s2.ack_sn == 8);
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TESTASSERT(s2.N_nack == 4);
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TESTASSERT(s2.nacks[0].nack_sn == 0);
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TESTASSERT(s2.nacks[1].nack_sn == 1);
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TESTASSERT(s2.nacks[2].nack_sn == 3);
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TESTASSERT(s2.nacks[3].nack_sn == 4);
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rlc_am_write_status_pdu(&s2, &b2);
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TESTASSERT(b2.N_bytes == PDU2_LEN);
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for (uint32_t i = 0; i < b2.N_bytes; i++) {
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TESTASSERT(b2.msg[i] == b1.msg[i]);
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}
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TESTASSERT(rlc_am_is_valid_status_pdu(s2));
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return SRSRAN_SUCCESS;
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}
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int malformed_status_pdu_test()
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{
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uint8_t pdu[] = {0x0b, 0x77, 0x6d, 0xd6, 0xe5, 0x6f, 0x56, 0xf8};
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srsran::rlc_status_pdu_t s1;
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srsran::byte_buffer_t b1, b2;
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memcpy(b1.msg, pdu, sizeof(pdu));
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b1.N_bytes = sizeof(pdu);
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rlc_am_read_status_pdu(&b1, &s1);
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TESTASSERT(rlc_am_is_valid_status_pdu(s1) == false);
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return SRSRAN_SUCCESS;
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}
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// Malformed PDU captured in field-test
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// 22:48:03.509077 [RLC ] [I] DRB1 Tx status PDU - ACK_SN = 205, N_nack = 98, NACK_SN =
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// [752][986][109][110][111][112][113][114][115][116][117][118][119][120][121][122][123][124][125][126][127][128][129]
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int malformed_status_pdu_test2()
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{
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uint32_t vr_a = 293;
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// Construct a status PDU that ACKs SN 205, which is outside the rx window
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srsran::rlc_status_pdu_t status_pdu = {};
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status_pdu.ack_sn = 205;
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status_pdu.N_nack = 2;
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status_pdu.nacks[0].nack_sn = 752;
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status_pdu.nacks[1].nack_sn = 986;
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TESTASSERT(rlc_am_is_valid_status_pdu(status_pdu, vr_a) == false);
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// 1 SN after upper edge of Rx window will fail
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status_pdu.ack_sn = 806;
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TESTASSERT(rlc_am_is_valid_status_pdu(status_pdu, vr_a) == false);
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// The exact upper edge of Rx window should work
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status_pdu.ack_sn = 805;
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status_pdu.N_nack = 0;
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TESTASSERT(rlc_am_is_valid_status_pdu(status_pdu, vr_a) == true);
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// ACK_SN is again outside of rx_window
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vr_a = 0;
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status_pdu.ack_sn = 742;
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status_pdu.N_nack = 0;
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TESTASSERT(rlc_am_is_valid_status_pdu(status_pdu, vr_a) == false);
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// ACK_SN is well within rx window
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vr_a = 300;
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status_pdu.ack_sn = 742;
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status_pdu.N_nack = 0;
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TESTASSERT(rlc_am_is_valid_status_pdu(status_pdu, vr_a) == true);
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return SRSRAN_SUCCESS;
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}
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int main(int argc, char** argv)
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{
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srslog::init();
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TESTASSERT(simple_status_pdu_test1() == SRSRAN_SUCCESS);
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TESTASSERT(status_pdu_with_nacks_test1() == SRSRAN_SUCCESS);
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TESTASSERT(malformed_status_pdu_test() == SRSRAN_SUCCESS);
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TESTASSERT(malformed_status_pdu_test2() == SRSRAN_SUCCESS);
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return SRSRAN_SUCCESS;
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}
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