dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2008, 2009, 2010 Free Software Foundation, Inc. |
| 3 | * |
Pau Espin Pedrol | 21d03d3 | 2019-07-22 12:05:52 +0200 | [diff] [blame] | 4 | * SPDX-License-Identifier: GPL-3.0+ |
| 5 | * |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 6 | * This software is distributed under the terms of the GNU Public License. |
| 7 | * See the COPYING file in the main directory for details. |
| 8 | * |
| 9 | * This use of this software may be subject to additional restrictions. |
| 10 | * See the LEGAL file in the main directory for details. |
| 11 | |
| 12 | This program is free software: you can redistribute it and/or modify |
| 13 | it under the terms of the GNU General Public License as published by |
| 14 | the Free Software Foundation, either version 3 of the License, or |
| 15 | (at your option) any later version. |
| 16 | |
| 17 | This program is distributed in the hope that it will be useful, |
| 18 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | GNU General Public License for more details. |
| 21 | |
| 22 | You should have received a copy of the GNU General Public License |
| 23 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 24 | */ |
| 25 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 26 | #include <stdio.h> |
Pau Espin Pedrol | 27424a3 | 2019-08-07 12:45:53 +0200 | [diff] [blame] | 27 | #include <netinet/in.h> |
Alexander Chemeris | e8905a0 | 2015-06-03 23:47:56 -0400 | [diff] [blame] | 28 | #include <iomanip> // std::setprecision |
Alexander Chemeris | e692ce9 | 2015-06-12 00:15:31 -0400 | [diff] [blame] | 29 | #include <fstream> |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 30 | #include "Transceiver.h" |
| 31 | #include <Logger.h> |
| 32 | |
Pau Espin Pedrol | db936b9 | 2018-09-03 16:50:49 +0200 | [diff] [blame] | 33 | extern "C" { |
| 34 | #include "osmo_signal.h" |
Pau Espin Pedrol | 778b30a | 2019-06-28 13:27:24 +0200 | [diff] [blame] | 35 | #include "proto_trxd.h" |
| 36 | |
Pau Espin Pedrol | 15fa64b | 2019-07-01 20:41:55 +0200 | [diff] [blame] | 37 | #include <osmocom/core/utils.h> |
Pau Espin Pedrol | b9d2515 | 2019-07-01 19:03:49 +0200 | [diff] [blame] | 38 | #include <osmocom/core/socket.h> |
Vadim Yanitskiy | b312325 | 2019-07-15 23:53:08 +0700 | [diff] [blame] | 39 | #include <osmocom/core/bits.h> |
Pau Espin Pedrol | db936b9 | 2018-09-03 16:50:49 +0200 | [diff] [blame] | 40 | } |
| 41 | |
ttsou | 2173abf | 2012-08-08 00:51:31 +0000 | [diff] [blame] | 42 | #ifdef HAVE_CONFIG_H |
| 43 | #include "config.h" |
| 44 | #endif |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 45 | |
Alexander Chemeris | d734e2d | 2013-06-16 14:30:58 +0400 | [diff] [blame] | 46 | using namespace GSM; |
| 47 | |
Eric | a7143bf | 2020-04-08 01:39:17 +0200 | [diff] [blame] | 48 | Transceiver *transceiver; |
| 49 | |
kurtis.heimerl | ec842de | 2012-11-23 08:37:32 +0000 | [diff] [blame] | 50 | #define USB_LATENCY_INTRVL 10,0 |
ttsou | 2173abf | 2012-08-08 00:51:31 +0000 | [diff] [blame] | 51 | |
Thomas Tsou | fa3a787 | 2013-10-17 21:23:34 -0400 | [diff] [blame] | 52 | /* Number of running values use in noise average */ |
| 53 | #define NOISE_CNT 20 |
ttsou | e8dde02 | 2012-12-06 15:43:55 +0000 | [diff] [blame] | 54 | |
Thomas Tsou | f078273 | 2013-10-29 15:55:47 -0400 | [diff] [blame] | 55 | TransceiverState::TransceiverState() |
Tom Tsou | a4d1a41 | 2014-11-25 15:46:56 -0800 | [diff] [blame] | 56 | : mRetrans(false), mNoiseLev(0.0), mNoises(NOISE_CNT), mPower(0.0) |
Thomas Tsou | f078273 | 2013-10-29 15:55:47 -0400 | [diff] [blame] | 57 | { |
| 58 | for (int i = 0; i < 8; i++) { |
| 59 | chanType[i] = Transceiver::NONE; |
| 60 | fillerModulus[i] = 26; |
| 61 | chanResponse[i] = NULL; |
| 62 | DFEForward[i] = NULL; |
| 63 | DFEFeedback[i] = NULL; |
| 64 | |
| 65 | for (int n = 0; n < 102; n++) |
| 66 | fillerTable[n][i] = NULL; |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | TransceiverState::~TransceiverState() |
| 71 | { |
| 72 | for (int i = 0; i < 8; i++) { |
| 73 | delete chanResponse[i]; |
| 74 | delete DFEForward[i]; |
| 75 | delete DFEFeedback[i]; |
| 76 | |
| 77 | for (int n = 0; n < 102; n++) |
| 78 | delete fillerTable[n][i]; |
| 79 | } |
| 80 | } |
| 81 | |
Pau Espin Pedrol | efac20b | 2018-02-21 14:59:19 +0100 | [diff] [blame] | 82 | bool TransceiverState::init(FillerType filler, size_t sps, float scale, size_t rtsc, unsigned rach_delay) |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 83 | { |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 84 | signalVector *burst; |
| 85 | |
| 86 | if ((sps != 1) && (sps != 4)) |
| 87 | return false; |
| 88 | |
| 89 | for (size_t n = 0; n < 8; n++) { |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 90 | for (size_t i = 0; i < 102; i++) { |
| 91 | switch (filler) { |
Pau Espin Pedrol | efac20b | 2018-02-21 14:59:19 +0100 | [diff] [blame] | 92 | case FILLER_DUMMY: |
Tom Tsou | 8ee2f38 | 2016-03-06 20:57:34 -0800 | [diff] [blame] | 93 | burst = generateDummyBurst(sps, n); |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 94 | break; |
Pau Espin Pedrol | efac20b | 2018-02-21 14:59:19 +0100 | [diff] [blame] | 95 | case FILLER_NORM_RAND: |
Tom Tsou | 8ee2f38 | 2016-03-06 20:57:34 -0800 | [diff] [blame] | 96 | burst = genRandNormalBurst(rtsc, sps, n); |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 97 | break; |
Pau Espin Pedrol | efac20b | 2018-02-21 14:59:19 +0100 | [diff] [blame] | 98 | case FILLER_EDGE_RAND: |
Tom Tsou | af717b2 | 2016-03-06 22:19:15 -0800 | [diff] [blame] | 99 | burst = generateEdgeBurst(rtsc); |
| 100 | break; |
Pau Espin Pedrol | efac20b | 2018-02-21 14:59:19 +0100 | [diff] [blame] | 101 | case FILLER_ACCESS_RAND: |
Alexander Chemeris | 37c52c7 | 2016-03-25 18:28:34 +0300 | [diff] [blame] | 102 | burst = genRandAccessBurst(rach_delay, sps, n); |
Alexander Chemeris | 5efe050 | 2016-03-23 17:06:32 +0300 | [diff] [blame] | 103 | break; |
Pau Espin Pedrol | efac20b | 2018-02-21 14:59:19 +0100 | [diff] [blame] | 104 | case FILLER_ZERO: |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 105 | default: |
Tom Tsou | 8ee2f38 | 2016-03-06 20:57:34 -0800 | [diff] [blame] | 106 | burst = generateEmptyBurst(sps, n); |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 107 | } |
| 108 | |
| 109 | scaleVector(*burst, scale); |
| 110 | fillerTable[i][n] = burst; |
| 111 | } |
| 112 | |
Pau Espin Pedrol | efac20b | 2018-02-21 14:59:19 +0100 | [diff] [blame] | 113 | if ((filler == FILLER_NORM_RAND) || |
| 114 | (filler == FILLER_EDGE_RAND)) { |
Alexander Chemeris | f9e78be | 2017-03-17 15:00:34 -0700 | [diff] [blame] | 115 | chanType[n] = TSC; |
Tom Tsou | af717b2 | 2016-03-06 22:19:15 -0800 | [diff] [blame] | 116 | } |
Thomas Tsou | 15d743e | 2014-01-25 02:34:03 -0500 | [diff] [blame] | 117 | } |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 118 | |
| 119 | return false; |
Thomas Tsou | f078273 | 2013-10-29 15:55:47 -0400 | [diff] [blame] | 120 | } |
| 121 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 122 | Transceiver::Transceiver(int wBasePort, |
Pau Espin Pedrol | 8c80095 | 2017-08-16 16:53:23 +0200 | [diff] [blame] | 123 | const char *TRXAddress, |
| 124 | const char *GSMcoreAddress, |
Tom Tsou | 5cd70dc | 2016-03-06 01:28:40 -0800 | [diff] [blame] | 125 | size_t tx_sps, size_t rx_sps, size_t chans, |
Alexander Chemeris | e8905a0 | 2015-06-03 23:47:56 -0400 | [diff] [blame] | 126 | GSM::Time wTransmitLatency, |
| 127 | RadioInterface *wRadioInterface, |
Eric Wild | ac0487e | 2019-06-17 13:02:44 +0200 | [diff] [blame] | 128 | double wRssiOffset, int wStackSize) |
Pau Espin Pedrol | 8c80095 | 2017-08-16 16:53:23 +0200 | [diff] [blame] | 129 | : mBasePort(wBasePort), mLocalAddr(TRXAddress), mRemoteAddr(GSMcoreAddress), |
Pau Espin Pedrol | b9d2515 | 2019-07-01 19:03:49 +0200 | [diff] [blame] | 130 | mClockSocket(-1), mTransmitLatency(wTransmitLatency), mRadioInterface(wRadioInterface), |
Eric Wild | ac0487e | 2019-06-17 13:02:44 +0200 | [diff] [blame] | 131 | rssiOffset(wRssiOffset), stackSize(wStackSize), |
Pau Espin Pedrol | 758381b | 2019-07-16 21:55:03 +0200 | [diff] [blame] | 132 | mSPSTx(tx_sps), mSPSRx(rx_sps), mChans(chans), mExtRACH(false), mEdge(false), |
| 133 | mOn(false), mForceClockInterface(false), |
Alexander Chemeris | 78d1fc9 | 2016-03-19 21:16:22 +0300 | [diff] [blame] | 134 | mTxFreq(0.0), mRxFreq(0.0), mTSC(0), mMaxExpectedDelayAB(0), mMaxExpectedDelayNB(0), |
Pau Espin Pedrol | c3325b9 | 2019-07-22 17:47:02 +0200 | [diff] [blame] | 135 | mWriteBurstToDiskMask(0) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 136 | { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 137 | txFullScale = mRadioInterface->fullScaleInputValue(); |
| 138 | rxFullScale = mRadioInterface->fullScaleOutputValue(); |
Alexander Chemeris | 5a06806 | 2015-06-20 01:38:47 +0300 | [diff] [blame] | 139 | |
| 140 | for (int i = 0; i < 8; i++) { |
| 141 | for (int j = 0; j < 8; j++) |
| 142 | mHandover[i][j] = false; |
| 143 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 144 | } |
| 145 | |
| 146 | Transceiver::~Transceiver() |
| 147 | { |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 148 | stop(); |
| 149 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 150 | sigProcLibDestroy(); |
Thomas Tsou | d647ec5 | 2013-10-29 15:17:34 -0400 | [diff] [blame] | 151 | |
Pau Espin Pedrol | b9d2515 | 2019-07-01 19:03:49 +0200 | [diff] [blame] | 152 | if (mClockSocket >= 0) |
| 153 | close(mClockSocket); |
| 154 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 155 | for (size_t i = 0; i < mChans; i++) { |
| 156 | mTxPriorityQueues[i].clear(); |
Pau Espin Pedrol | b9d2515 | 2019-07-01 19:03:49 +0200 | [diff] [blame] | 157 | if (mDataSockets[i] >= 0) |
| 158 | close(mDataSockets[i]); |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 159 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 160 | } |
Thomas Tsou | 83e0689 | 2013-08-20 16:10:01 -0400 | [diff] [blame] | 161 | |
Eric | a7143bf | 2020-04-08 01:39:17 +0200 | [diff] [blame] | 162 | int Transceiver::ctrl_sock_cb(struct osmo_fd *bfd, unsigned int flags) |
| 163 | { |
| 164 | int rc = 0; |
| 165 | int chan = static_cast<int>(reinterpret_cast<uintptr_t>(bfd->data)); |
| 166 | |
| 167 | if (flags & OSMO_FD_READ) |
| 168 | rc = transceiver->ctrl_sock_handle_rx(chan); |
| 169 | if (rc < 0) |
| 170 | osmo_signal_dispatch(SS_MAIN, S_MAIN_STOP_REQUIRED, NULL); |
| 171 | |
| 172 | if (flags & OSMO_FD_WRITE) |
| 173 | rc = transceiver->ctrl_sock_write(chan); |
| 174 | if (rc < 0) |
| 175 | osmo_signal_dispatch(SS_MAIN, S_MAIN_STOP_REQUIRED, NULL); |
| 176 | |
| 177 | return rc; |
| 178 | } |
| 179 | |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 180 | /* |
| 181 | * Initialize transceiver |
| 182 | * |
| 183 | * Start or restart the control loop. Any further control is handled through the |
| 184 | * socket API. Randomize the central radio clock set the downlink burst |
| 185 | * counters. Note that the clock will not update until the radio starts, but we |
| 186 | * are still expected to report clock indications through control channel |
| 187 | * activity. |
| 188 | */ |
Vadim Yanitskiy | a8b3565 | 2018-10-22 02:52:18 +0200 | [diff] [blame] | 189 | bool Transceiver::init(FillerType filler, size_t rtsc, unsigned rach_delay, |
| 190 | bool edge, bool ext_rach) |
Thomas Tsou | 83e0689 | 2013-08-20 16:10:01 -0400 | [diff] [blame] | 191 | { |
Thomas Tsou | e1ce925 | 2013-11-13 22:40:44 -0500 | [diff] [blame] | 192 | int d_srcport, d_dstport, c_srcport, c_dstport; |
Thomas Tsou | f078273 | 2013-10-29 15:55:47 -0400 | [diff] [blame] | 193 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 194 | if (!mChans) { |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 195 | LOG(FATAL) << "No channels assigned"; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 196 | return false; |
| 197 | } |
| 198 | |
Tom Tsou | 2079a3c | 2016-03-06 00:58:56 -0800 | [diff] [blame] | 199 | if (!sigProcLibSetup()) { |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 200 | LOG(FATAL) << "Failed to initialize signal processing library"; |
Thomas Tsou | 83e0689 | 2013-08-20 16:10:01 -0400 | [diff] [blame] | 201 | return false; |
| 202 | } |
| 203 | |
Vadim Yanitskiy | a8b3565 | 2018-10-22 02:52:18 +0200 | [diff] [blame] | 204 | mExtRACH = ext_rach; |
Tom Tsou | 64464e6 | 2016-07-01 03:46:46 -0700 | [diff] [blame] | 205 | mEdge = edge; |
| 206 | |
Pau Espin Pedrol | b9d2515 | 2019-07-01 19:03:49 +0200 | [diff] [blame] | 207 | mDataSockets.resize(mChans, -1); |
Eric | a7143bf | 2020-04-08 01:39:17 +0200 | [diff] [blame] | 208 | mCtrlSockets.resize(mChans); |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 209 | mTxPriorityQueueServiceLoopThreads.resize(mChans); |
| 210 | mRxServiceLoopThreads.resize(mChans); |
| 211 | |
| 212 | mTxPriorityQueues.resize(mChans); |
| 213 | mReceiveFIFO.resize(mChans); |
| 214 | mStates.resize(mChans); |
Pau Espin Pedrol | c3325b9 | 2019-07-22 17:47:02 +0200 | [diff] [blame] | 215 | mVersionTRXD.resize(mChans); |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 216 | |
Thomas Tsou | ccb73e1 | 2014-04-15 17:41:28 -0400 | [diff] [blame] | 217 | /* Filler table retransmissions - support only on channel 0 */ |
Tom Tsou | 64ad712 | 2015-05-19 18:26:31 -0700 | [diff] [blame] | 218 | if (filler == FILLER_DUMMY) |
Thomas Tsou | ccb73e1 | 2014-04-15 17:41:28 -0400 | [diff] [blame] | 219 | mStates[0].mRetrans = true; |
| 220 | |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 221 | /* Setup sockets */ |
Pau Espin Pedrol | b9d2515 | 2019-07-01 19:03:49 +0200 | [diff] [blame] | 222 | mClockSocket = osmo_sock_init2(AF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP, |
| 223 | mLocalAddr.c_str(), mBasePort, |
| 224 | mRemoteAddr.c_str(), mBasePort + 100, |
| 225 | OSMO_SOCK_F_BIND | OSMO_SOCK_F_CONNECT); |
Pau Espin Pedrol | e7195ac | 2019-08-26 10:55:04 +0200 | [diff] [blame] | 226 | if (mClockSocket < 0) |
| 227 | return false; |
Pau Espin Pedrol | b9d2515 | 2019-07-01 19:03:49 +0200 | [diff] [blame] | 228 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 229 | for (size_t i = 0; i < mChans; i++) { |
Eric | a7143bf | 2020-04-08 01:39:17 +0200 | [diff] [blame] | 230 | int rv; |
Thomas Tsou | e1ce925 | 2013-11-13 22:40:44 -0500 | [diff] [blame] | 231 | c_srcport = mBasePort + 2 * i + 1; |
| 232 | c_dstport = mBasePort + 2 * i + 101; |
| 233 | d_srcport = mBasePort + 2 * i + 2; |
| 234 | d_dstport = mBasePort + 2 * i + 102; |
| 235 | |
Eric | a7143bf | 2020-04-08 01:39:17 +0200 | [diff] [blame] | 236 | rv = osmo_sock_init2_ofd(&mCtrlSockets[i].conn_bfd, AF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP, |
Pau Espin Pedrol | b9d2515 | 2019-07-01 19:03:49 +0200 | [diff] [blame] | 237 | mLocalAddr.c_str(), c_srcport, |
| 238 | mRemoteAddr.c_str(), c_dstport, |
| 239 | OSMO_SOCK_F_BIND | OSMO_SOCK_F_CONNECT); |
Eric | a7143bf | 2020-04-08 01:39:17 +0200 | [diff] [blame] | 240 | if (rv < 0) |
Pau Espin Pedrol | b9d2515 | 2019-07-01 19:03:49 +0200 | [diff] [blame] | 241 | return false; |
| 242 | |
Eric | a7143bf | 2020-04-08 01:39:17 +0200 | [diff] [blame] | 243 | mCtrlSockets[i].conn_bfd.cb = ctrl_sock_cb; |
| 244 | mCtrlSockets[i].conn_bfd.data = reinterpret_cast<void*>(i); |
| 245 | |
| 246 | |
Pau Espin Pedrol | b9d2515 | 2019-07-01 19:03:49 +0200 | [diff] [blame] | 247 | mDataSockets[i] = osmo_sock_init2(AF_UNSPEC, SOCK_DGRAM, IPPROTO_UDP, |
| 248 | mLocalAddr.c_str(), d_srcport, |
| 249 | mRemoteAddr.c_str(), d_dstport, |
| 250 | OSMO_SOCK_F_BIND | OSMO_SOCK_F_CONNECT); |
Eric | 1a26b4f | 2020-04-13 00:03:01 +0200 | [diff] [blame] | 251 | if (mDataSockets[i] < 0) |
Pau Espin Pedrol | b9d2515 | 2019-07-01 19:03:49 +0200 | [diff] [blame] | 252 | return false; |
Eric | a7143bf | 2020-04-08 01:39:17 +0200 | [diff] [blame] | 253 | |
| 254 | if (i && filler == FILLER_DUMMY) |
| 255 | filler = FILLER_ZERO; |
| 256 | |
| 257 | mStates[i].init(filler, mSPSTx, txFullScale, rtsc, rach_delay); |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 258 | } |
Thomas Tsou | 83e0689 | 2013-08-20 16:10:01 -0400 | [diff] [blame] | 259 | |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 260 | /* Randomize the central clock */ |
| 261 | GSM::Time startTime(random() % gHyperframe, 0); |
| 262 | mRadioInterface->getClock()->set(startTime); |
| 263 | mTransmitDeadlineClock = startTime; |
| 264 | mLastClockUpdateTime = startTime; |
| 265 | mLatencyUpdateTime = startTime; |
| 266 | |
Thomas Tsou | 83e0689 | 2013-08-20 16:10:01 -0400 | [diff] [blame] | 267 | return true; |
| 268 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 269 | |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 270 | /* |
| 271 | * Start the transceiver |
| 272 | * |
| 273 | * Submit command(s) to the radio device to commence streaming samples and |
| 274 | * launch threads to handle sample I/O. Re-synchronize the transmit burst |
| 275 | * counters to the central radio clock here as well. |
| 276 | */ |
| 277 | bool Transceiver::start() |
| 278 | { |
| 279 | ScopedLock lock(mLock); |
| 280 | |
| 281 | if (mOn) { |
| 282 | LOG(ERR) << "Transceiver already running"; |
Ivan Kluchnikov | 194a9b1 | 2015-04-23 17:08:27 +0300 | [diff] [blame] | 283 | return true; |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 284 | } |
| 285 | |
| 286 | LOG(NOTICE) << "Starting the transceiver"; |
| 287 | |
| 288 | GSM::Time time = mRadioInterface->getClock()->get(); |
| 289 | mTransmitDeadlineClock = time; |
| 290 | mLastClockUpdateTime = time; |
| 291 | mLatencyUpdateTime = time; |
| 292 | |
| 293 | if (!mRadioInterface->start()) { |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 294 | LOG(FATAL) << "Device failed to start"; |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 295 | return false; |
| 296 | } |
| 297 | |
| 298 | /* Device is running - launch I/O threads */ |
Eric Wild | ac0487e | 2019-06-17 13:02:44 +0200 | [diff] [blame] | 299 | mRxLowerLoopThread = new Thread(stackSize); |
| 300 | mTxLowerLoopThread = new Thread(stackSize); |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 301 | mTxLowerLoopThread->start((void * (*)(void*)) |
| 302 | TxLowerLoopAdapter,(void*) this); |
| 303 | mRxLowerLoopThread->start((void * (*)(void*)) |
| 304 | RxLowerLoopAdapter,(void*) this); |
| 305 | |
| 306 | /* Launch uplink and downlink burst processing threads */ |
| 307 | for (size_t i = 0; i < mChans; i++) { |
Pau Espin Pedrol | 720b912 | 2019-07-22 18:10:52 +0200 | [diff] [blame] | 308 | TrxChanThParams *params = (TrxChanThParams *)malloc(sizeof(struct TrxChanThParams)); |
| 309 | params->trx = this; |
| 310 | params->num = i; |
Eric Wild | ac0487e | 2019-06-17 13:02:44 +0200 | [diff] [blame] | 311 | mRxServiceLoopThreads[i] = new Thread(stackSize); |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 312 | mRxServiceLoopThreads[i]->start((void * (*)(void*)) |
Pau Espin Pedrol | 720b912 | 2019-07-22 18:10:52 +0200 | [diff] [blame] | 313 | RxUpperLoopAdapter, (void*) params); |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 314 | |
Pau Espin Pedrol | 720b912 | 2019-07-22 18:10:52 +0200 | [diff] [blame] | 315 | params = (TrxChanThParams *)malloc(sizeof(struct TrxChanThParams)); |
| 316 | params->trx = this; |
| 317 | params->num = i; |
Eric Wild | ac0487e | 2019-06-17 13:02:44 +0200 | [diff] [blame] | 318 | mTxPriorityQueueServiceLoopThreads[i] = new Thread(stackSize); |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 319 | mTxPriorityQueueServiceLoopThreads[i]->start((void * (*)(void*)) |
Pau Espin Pedrol | 720b912 | 2019-07-22 18:10:52 +0200 | [diff] [blame] | 320 | TxUpperLoopAdapter, (void*) params); |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 321 | } |
| 322 | |
Pau Espin Pedrol | 934da48 | 2017-07-04 16:25:20 +0200 | [diff] [blame] | 323 | mForceClockInterface = true; |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 324 | mOn = true; |
| 325 | return true; |
| 326 | } |
| 327 | |
| 328 | /* |
| 329 | * Stop the transceiver |
| 330 | * |
| 331 | * Perform stopping by disabling receive streaming and issuing cancellation |
| 332 | * requests to running threads. Most threads will timeout and terminate once |
| 333 | * device is disabled, but the transmit loop may block waiting on the central |
| 334 | * UMTS clock. Explicitly signal the clock to make sure that the transmit loop |
| 335 | * makes it to the thread cancellation point. |
| 336 | */ |
| 337 | void Transceiver::stop() |
| 338 | { |
| 339 | ScopedLock lock(mLock); |
| 340 | |
| 341 | if (!mOn) |
| 342 | return; |
| 343 | |
| 344 | LOG(NOTICE) << "Stopping the transceiver"; |
| 345 | mTxLowerLoopThread->cancel(); |
| 346 | mRxLowerLoopThread->cancel(); |
Tom Tsou | d67bd60 | 2017-06-15 15:35:02 -0700 | [diff] [blame] | 347 | mTxLowerLoopThread->join(); |
| 348 | mRxLowerLoopThread->join(); |
| 349 | delete mTxLowerLoopThread; |
| 350 | delete mRxLowerLoopThread; |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 351 | |
| 352 | for (size_t i = 0; i < mChans; i++) { |
| 353 | mRxServiceLoopThreads[i]->cancel(); |
| 354 | mTxPriorityQueueServiceLoopThreads[i]->cancel(); |
| 355 | } |
| 356 | |
| 357 | LOG(INFO) << "Stopping the device"; |
| 358 | mRadioInterface->stop(); |
| 359 | |
| 360 | for (size_t i = 0; i < mChans; i++) { |
| 361 | mRxServiceLoopThreads[i]->join(); |
| 362 | mTxPriorityQueueServiceLoopThreads[i]->join(); |
| 363 | delete mRxServiceLoopThreads[i]; |
| 364 | delete mTxPriorityQueueServiceLoopThreads[i]; |
| 365 | |
| 366 | mTxPriorityQueues[i].clear(); |
| 367 | } |
| 368 | |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 369 | mOn = false; |
| 370 | LOG(NOTICE) << "Transceiver stopped"; |
| 371 | } |
| 372 | |
Thomas Tsou | a2fe91a | 2013-11-13 22:48:11 -0500 | [diff] [blame] | 373 | void Transceiver::addRadioVector(size_t chan, BitVector &bits, |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 374 | int RSSI, GSM::Time &wTime) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 375 | { |
Thomas Tsou | a2fe91a | 2013-11-13 22:48:11 -0500 | [diff] [blame] | 376 | signalVector *burst; |
| 377 | radioVector *radio_burst; |
| 378 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 379 | if (chan >= mTxPriorityQueues.size()) { |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 380 | LOGCHAN(chan, DTRXDDL, FATAL) << "Invalid channel"; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 381 | return; |
| 382 | } |
| 383 | |
Thomas Tsou | 2d0c00b | 2013-11-14 15:28:23 -0500 | [diff] [blame] | 384 | if (wTime.TN() > 7) { |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 385 | LOGCHAN(chan, DTRXDDL, FATAL) << "Received burst with invalid slot " << wTime.TN(); |
Thomas Tsou | 2d0c00b | 2013-11-14 15:28:23 -0500 | [diff] [blame] | 386 | return; |
| 387 | } |
| 388 | |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 389 | /* Use the number of bits as the EDGE burst indicator */ |
| 390 | if (bits.size() == EDGE_BURST_NBITS) |
| 391 | burst = modulateEdgeBurst(bits, mSPSTx); |
| 392 | else |
| 393 | burst = modulateBurst(bits, 8 + (wTime.TN() % 4 == 0), mSPSTx); |
| 394 | |
Thomas Tsou | a2fe91a | 2013-11-13 22:48:11 -0500 | [diff] [blame] | 395 | scaleVector(*burst, txFullScale * pow(10, -RSSI / 10)); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 396 | |
Thomas Tsou | a2fe91a | 2013-11-13 22:48:11 -0500 | [diff] [blame] | 397 | radio_burst = new radioVector(wTime, burst); |
| 398 | |
| 399 | mTxPriorityQueues[chan].write(radio_burst); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 400 | } |
| 401 | |
Thomas Tsou | 15d743e | 2014-01-25 02:34:03 -0500 | [diff] [blame] | 402 | void Transceiver::updateFillerTable(size_t chan, radioVector *burst) |
| 403 | { |
| 404 | int TN, modFN; |
| 405 | TransceiverState *state = &mStates[chan]; |
| 406 | |
| 407 | TN = burst->getTime().TN(); |
| 408 | modFN = burst->getTime().FN() % state->fillerModulus[TN]; |
| 409 | |
| 410 | delete state->fillerTable[modFN][TN]; |
| 411 | state->fillerTable[modFN][TN] = burst->getVector(); |
| 412 | burst->setVector(NULL); |
| 413 | } |
| 414 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 415 | void Transceiver::pushRadioVector(GSM::Time &nowTime) |
| 416 | { |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 417 | int TN, modFN; |
| 418 | radioVector *burst; |
| 419 | TransceiverState *state; |
| 420 | std::vector<signalVector *> bursts(mChans); |
| 421 | std::vector<bool> zeros(mChans); |
Thomas Tsou | 15d743e | 2014-01-25 02:34:03 -0500 | [diff] [blame] | 422 | std::vector<bool> filler(mChans, true); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 423 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 424 | for (size_t i = 0; i < mChans; i ++) { |
| 425 | state = &mStates[i]; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 426 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 427 | while ((burst = mTxPriorityQueues[i].getStaleBurst(nowTime))) { |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 428 | LOGCHAN(i, DTRXDDL, NOTICE) << "dumping STALE burst in TRX->SDR interface (" |
Pau Espin Pedrol | f37b0ad | 2018-04-25 18:01:27 +0200 | [diff] [blame] | 429 | << burst->getTime() <<" vs " << nowTime << "), retrans=" << state->mRetrans; |
Thomas Tsou | 15d743e | 2014-01-25 02:34:03 -0500 | [diff] [blame] | 430 | if (state->mRetrans) |
| 431 | updateFillerTable(i, burst); |
Thomas Tsou | a2fe91a | 2013-11-13 22:48:11 -0500 | [diff] [blame] | 432 | delete burst; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 433 | } |
| 434 | |
| 435 | TN = nowTime.TN(); |
| 436 | modFN = nowTime.FN() % state->fillerModulus[TN]; |
| 437 | |
| 438 | bursts[i] = state->fillerTable[modFN][TN]; |
| 439 | zeros[i] = state->chanType[TN] == NONE; |
| 440 | |
| 441 | if ((burst = mTxPriorityQueues[i].getCurrentBurst(nowTime))) { |
Thomas Tsou | a2fe91a | 2013-11-13 22:48:11 -0500 | [diff] [blame] | 442 | bursts[i] = burst->getVector(); |
Thomas Tsou | 15d743e | 2014-01-25 02:34:03 -0500 | [diff] [blame] | 443 | |
| 444 | if (state->mRetrans) { |
| 445 | updateFillerTable(i, burst); |
| 446 | } else { |
| 447 | burst->setVector(NULL); |
| 448 | filler[i] = false; |
| 449 | } |
| 450 | |
Thomas Tsou | a2fe91a | 2013-11-13 22:48:11 -0500 | [diff] [blame] | 451 | delete burst; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 452 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 453 | } |
| 454 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 455 | mRadioInterface->driveTransmitRadio(bursts, zeros); |
| 456 | |
Thomas Tsou | 15d743e | 2014-01-25 02:34:03 -0500 | [diff] [blame] | 457 | for (size_t i = 0; i < mChans; i++) { |
| 458 | if (!filler[i]) |
| 459 | delete bursts[i]; |
| 460 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 461 | } |
| 462 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 463 | void Transceiver::setModulus(size_t timeslot, size_t chan) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 464 | { |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 465 | TransceiverState *state = &mStates[chan]; |
| 466 | |
| 467 | switch (state->chanType[timeslot]) { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 468 | case NONE: |
| 469 | case I: |
| 470 | case II: |
| 471 | case III: |
| 472 | case FILL: |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 473 | state->fillerModulus[timeslot] = 26; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 474 | break; |
| 475 | case IV: |
| 476 | case VI: |
| 477 | case V: |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 478 | state->fillerModulus[timeslot] = 51; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 479 | break; |
Pau Espin Pedrol | 7c405a0 | 2017-07-04 16:24:06 +0200 | [diff] [blame] | 480 | //case V: |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 481 | case VII: |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 482 | state->fillerModulus[timeslot] = 102; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 483 | break; |
ttsou | fc40a84 | 2013-06-09 22:38:18 +0000 | [diff] [blame] | 484 | case XIII: |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 485 | state->fillerModulus[timeslot] = 52; |
ttsou | fc40a84 | 2013-06-09 22:38:18 +0000 | [diff] [blame] | 486 | break; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 487 | default: |
| 488 | break; |
| 489 | } |
| 490 | } |
| 491 | |
| 492 | |
Alexander Chemeris | f9e78be | 2017-03-17 15:00:34 -0700 | [diff] [blame] | 493 | CorrType Transceiver::expectedCorrType(GSM::Time currTime, |
| 494 | size_t chan) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 495 | { |
Alexander Chemeris | 5a06806 | 2015-06-20 01:38:47 +0300 | [diff] [blame] | 496 | static int tchh_subslot[26] = { 0,1,0,1,0,1,0,1,0,1,0,1,0,0,1,0,1,0,1,0,1,0,1,0,1,1 }; |
| 497 | static int sdcch4_subslot[102] = { 3,3,3,3,0,0,2,2,2,2,3,3,3,3,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,2,2,2,2, |
| 498 | 3,3,3,3,0,0,0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,2,2,2,2 }; |
| 499 | static int sdcch8_subslot[102] = { 5,5,5,5,6,6,6,6,7,7,7,7,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,6,6,6,6,7,7,7,7,0,0,0,0, |
| 500 | 1,1,1,1,2,2,2,2,3,3,3,3,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,6,6,6,6,7,7,7,7,4,4,4,4 }; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 501 | TransceiverState *state = &mStates[chan]; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 502 | unsigned burstTN = currTime.TN(); |
| 503 | unsigned burstFN = currTime.FN(); |
Alexander Chemeris | 5a06806 | 2015-06-20 01:38:47 +0300 | [diff] [blame] | 504 | int subch; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 505 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 506 | switch (state->chanType[burstTN]) { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 507 | case NONE: |
| 508 | return OFF; |
| 509 | break; |
| 510 | case FILL: |
| 511 | return IDLE; |
| 512 | break; |
| 513 | case I: |
Alexander Chemeris | 5a06806 | 2015-06-20 01:38:47 +0300 | [diff] [blame] | 514 | // TODO: Are we expecting RACH on an IDLE frame? |
| 515 | /* if (burstFN % 26 == 25) |
| 516 | return IDLE;*/ |
| 517 | if (mHandover[burstTN][0]) |
| 518 | return RACH; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 519 | return TSC; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 520 | break; |
| 521 | case II: |
Alexander Chemeris | 5a06806 | 2015-06-20 01:38:47 +0300 | [diff] [blame] | 522 | subch = tchh_subslot[burstFN % 26]; |
| 523 | if (subch == 1) |
| 524 | return IDLE; |
| 525 | if (mHandover[burstTN][0]) |
| 526 | return RACH; |
ttsou | 2064297 | 2013-03-27 22:00:25 +0000 | [diff] [blame] | 527 | return TSC; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 528 | break; |
| 529 | case III: |
Alexander Chemeris | 5a06806 | 2015-06-20 01:38:47 +0300 | [diff] [blame] | 530 | subch = tchh_subslot[burstFN % 26]; |
| 531 | if (mHandover[burstTN][subch]) |
| 532 | return RACH; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 533 | return TSC; |
| 534 | break; |
| 535 | case IV: |
| 536 | case VI: |
Vadim Yanitskiy | a8b3565 | 2018-10-22 02:52:18 +0200 | [diff] [blame] | 537 | return mExtRACH ? EXT_RACH : RACH; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 538 | break; |
| 539 | case V: { |
| 540 | int mod51 = burstFN % 51; |
| 541 | if ((mod51 <= 36) && (mod51 >= 14)) |
Vadim Yanitskiy | a8b3565 | 2018-10-22 02:52:18 +0200 | [diff] [blame] | 542 | return mExtRACH ? EXT_RACH : RACH; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 543 | else if ((mod51 == 4) || (mod51 == 5)) |
Vadim Yanitskiy | a8b3565 | 2018-10-22 02:52:18 +0200 | [diff] [blame] | 544 | return mExtRACH ? EXT_RACH : RACH; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 545 | else if ((mod51 == 45) || (mod51 == 46)) |
Vadim Yanitskiy | a8b3565 | 2018-10-22 02:52:18 +0200 | [diff] [blame] | 546 | return mExtRACH ? EXT_RACH : RACH; |
Alexander Chemeris | 5a06806 | 2015-06-20 01:38:47 +0300 | [diff] [blame] | 547 | else if (mHandover[burstTN][sdcch4_subslot[burstFN % 102]]) |
| 548 | return RACH; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 549 | else |
| 550 | return TSC; |
| 551 | break; |
| 552 | } |
| 553 | case VII: |
| 554 | if ((burstFN % 51 <= 14) && (burstFN % 51 >= 12)) |
| 555 | return IDLE; |
Alexander Chemeris | 5a06806 | 2015-06-20 01:38:47 +0300 | [diff] [blame] | 556 | else if (mHandover[burstTN][sdcch8_subslot[burstFN % 102]]) |
| 557 | return RACH; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 558 | else |
| 559 | return TSC; |
| 560 | break; |
ttsou | fc40a84 | 2013-06-09 22:38:18 +0000 | [diff] [blame] | 561 | case XIII: { |
| 562 | int mod52 = burstFN % 52; |
| 563 | if ((mod52 == 12) || (mod52 == 38)) |
Vadim Yanitskiy | a8b3565 | 2018-10-22 02:52:18 +0200 | [diff] [blame] | 564 | return mExtRACH ? EXT_RACH : RACH; |
ttsou | fc40a84 | 2013-06-09 22:38:18 +0000 | [diff] [blame] | 565 | else if ((mod52 == 25) || (mod52 == 51)) |
| 566 | return IDLE; |
Pau Espin Pedrol | bfc1d0b | 2019-08-26 16:34:45 +0200 | [diff] [blame] | 567 | else /* Enable 8-PSK burst detection if EDGE is enabled */ |
| 568 | return mEdge ? EDGE : TSC; |
ttsou | fc40a84 | 2013-06-09 22:38:18 +0000 | [diff] [blame] | 569 | break; |
| 570 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 571 | case LOOPBACK: |
| 572 | if ((burstFN % 51 <= 50) && (burstFN % 51 >=48)) |
| 573 | return IDLE; |
| 574 | else |
| 575 | return TSC; |
| 576 | break; |
| 577 | default: |
| 578 | return OFF; |
| 579 | break; |
| 580 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 581 | } |
Thomas Tsou | fa3a787 | 2013-10-17 21:23:34 -0400 | [diff] [blame] | 582 | |
Alexander Chemeris | e692ce9 | 2015-06-12 00:15:31 -0400 | [diff] [blame] | 583 | void writeToFile(radioVector *radio_burst, size_t chan) |
| 584 | { |
| 585 | GSM::Time time = radio_burst->getTime(); |
| 586 | std::ostringstream fname; |
| 587 | fname << chan << "_" << time.FN() << "_" << time.TN() << ".fc"; |
| 588 | std::ofstream outfile (fname.str().c_str(), std::ofstream::binary); |
| 589 | outfile.write((char*)radio_burst->getVector()->begin(), radio_burst->getVector()->size() * 2 * sizeof(float)); |
| 590 | outfile.close(); |
| 591 | } |
| 592 | |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 593 | /* |
| 594 | * Pull bursts from the FIFO and handle according to the slot |
Pau Espin Pedrol | 7c405a0 | 2017-07-04 16:24:06 +0200 | [diff] [blame] | 595 | * and burst correlation type. Equalzation is currently disabled. |
Pau Espin Pedrol | 923b4bc | 2019-09-06 15:01:26 +0200 | [diff] [blame] | 596 | * returns 0 on success (bi filled), negative on error (bi content undefined): |
| 597 | * -ENOENT: timeslot is off (fn and tn in bi are filled), |
| 598 | * -EIO: read error |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 599 | */ |
Pau Espin Pedrol | 923b4bc | 2019-09-06 15:01:26 +0200 | [diff] [blame] | 600 | int Transceiver::pullRadioVector(size_t chan, struct trx_ul_burst_ind *bi) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 601 | { |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 602 | int rc; |
Pau Espin Pedrol | 7ee2d10 | 2019-07-04 13:02:12 +0200 | [diff] [blame] | 603 | struct estim_burst_params ebp; |
| 604 | float max = -1.0, avg = 0.0; |
Pau Espin Pedrol | 9bb24a1 | 2019-07-03 15:43:03 +0200 | [diff] [blame] | 605 | unsigned max_toa; |
Thomas Tsou | e90a42b | 2013-11-13 23:38:09 -0500 | [diff] [blame] | 606 | int max_i = -1; |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 607 | signalVector *burst; |
Pau Espin Pedrol | 07ddce5 | 2019-07-01 16:36:10 +0200 | [diff] [blame] | 608 | GSM::Time burstTime; |
Pau Espin Pedrol | 7dc07b9 | 2019-07-01 17:55:01 +0200 | [diff] [blame] | 609 | SoftVector *rxBurst; |
Thomas Tsou | a0179e3 | 2013-11-14 15:52:04 -0500 | [diff] [blame] | 610 | TransceiverState *state = &mStates[chan]; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 611 | |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 612 | /* Blocking FIFO read */ |
| 613 | radioVector *radio_burst = mReceiveFIFO[chan]->read(); |
Pau Espin Pedrol | 94c5241 | 2019-09-06 13:48:35 +0200 | [diff] [blame] | 614 | if (!radio_burst) { |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 615 | LOGCHAN(chan, DTRXDUL, ERROR) << "ReceiveFIFO->read() returned no burst"; |
Pau Espin Pedrol | 923b4bc | 2019-09-06 15:01:26 +0200 | [diff] [blame] | 616 | return -EIO; |
Pau Espin Pedrol | 94c5241 | 2019-09-06 13:48:35 +0200 | [diff] [blame] | 617 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 618 | |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 619 | /* Set time and determine correlation type */ |
Pau Espin Pedrol | 07ddce5 | 2019-07-01 16:36:10 +0200 | [diff] [blame] | 620 | burstTime = radio_burst->getTime(); |
Pau Espin Pedrol | 07ddce5 | 2019-07-01 16:36:10 +0200 | [diff] [blame] | 621 | CorrType type = expectedCorrType(burstTime, chan); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 622 | |
Pau Espin Pedrol | 95c8318 | 2019-07-03 16:01:12 +0200 | [diff] [blame] | 623 | /* Initialize struct bi */ |
| 624 | bi->nbits = 0; |
| 625 | bi->fn = burstTime.FN(); |
| 626 | bi->tn = burstTime.TN(); |
| 627 | bi->rssi = 0.0; |
| 628 | bi->toa = 0.0; |
| 629 | bi->noise = 0.0; |
| 630 | bi->idle = false; |
Pau Espin Pedrol | cf6113b | 2019-07-01 20:42:53 +0200 | [diff] [blame] | 631 | bi->modulation = MODULATION_GMSK; |
| 632 | bi->tss = 0; /* TODO: we only support tss 0 right now */ |
| 633 | bi->tsc = 0; |
| 634 | bi->ci = 0.0; |
Pau Espin Pedrol | 95c8318 | 2019-07-03 16:01:12 +0200 | [diff] [blame] | 635 | |
Pau Espin Pedrol | 0d56d75 | 2019-09-09 10:20:58 +0200 | [diff] [blame] | 636 | /* Debug: dump bursts to disk */ |
| 637 | /* bits 0-7 - chan 0 timeslots |
| 638 | * bits 8-15 - chan 1 timeslots */ |
| 639 | if (mWriteBurstToDiskMask & ((1<<bi->tn) << (8*chan))) |
| 640 | writeToFile(radio_burst, chan); |
| 641 | |
| 642 | /* No processing if the timeslot is off. |
| 643 | * Not even power level or noise calculation. */ |
| 644 | if (type == OFF) { |
| 645 | delete radio_burst; |
Pau Espin Pedrol | 923b4bc | 2019-09-06 15:01:26 +0200 | [diff] [blame] | 646 | return -ENOENT; |
Pau Espin Pedrol | 0d56d75 | 2019-09-09 10:20:58 +0200 | [diff] [blame] | 647 | } |
| 648 | |
Thomas Tsou | e90a42b | 2013-11-13 23:38:09 -0500 | [diff] [blame] | 649 | /* Select the diversity channel with highest energy */ |
| 650 | for (size_t i = 0; i < radio_burst->chans(); i++) { |
Alexander Chemeris | 1dd05cf | 2017-03-15 23:23:36 +0300 | [diff] [blame] | 651 | float pow = energyDetect(*radio_burst->getVector(i), 20 * mSPSRx); |
Thomas Tsou | e90a42b | 2013-11-13 23:38:09 -0500 | [diff] [blame] | 652 | if (pow > max) { |
| 653 | max = pow; |
| 654 | max_i = i; |
| 655 | } |
| 656 | avg += pow; |
| 657 | } |
| 658 | |
| 659 | if (max_i < 0) { |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 660 | LOGCHAN(chan, DTRXDUL, FATAL) << "Received empty burst"; |
Pau Espin Pedrol | 95c8318 | 2019-07-03 16:01:12 +0200 | [diff] [blame] | 661 | goto ret_idle; |
Thomas Tsou | e90a42b | 2013-11-13 23:38:09 -0500 | [diff] [blame] | 662 | } |
| 663 | |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 664 | /* Average noise on diversity paths and update global levels */ |
Thomas Tsou | e90a42b | 2013-11-13 23:38:09 -0500 | [diff] [blame] | 665 | burst = radio_burst->getVector(max_i); |
Thomas Tsou | ef25dba | 2013-11-14 15:31:24 -0500 | [diff] [blame] | 666 | avg = sqrt(avg / radio_burst->chans()); |
Alexander Chemeris | 2b54210 | 2015-06-08 22:46:38 -0400 | [diff] [blame] | 667 | |
Alexander Chemeris | 2b54210 | 2015-06-08 22:46:38 -0400 | [diff] [blame] | 668 | if (type == IDLE) { |
| 669 | /* Update noise levels */ |
| 670 | state->mNoises.insert(avg); |
| 671 | state->mNoiseLev = state->mNoises.avg(); |
Pau Espin Pedrol | be9cd66 | 2019-07-03 15:00:56 +0200 | [diff] [blame] | 672 | } |
Alexander Chemeris | 2b54210 | 2015-06-08 22:46:38 -0400 | [diff] [blame] | 673 | |
Pau Espin Pedrol | be9cd66 | 2019-07-03 15:00:56 +0200 | [diff] [blame] | 674 | bi->rssi = 20.0 * log10(rxFullScale / avg) + rssiOffset; |
| 675 | bi->noise = 20.0 * log10(rxFullScale / state->mNoiseLev) + rssiOffset; |
| 676 | |
Pau Espin Pedrol | 95c8318 | 2019-07-03 16:01:12 +0200 | [diff] [blame] | 677 | if (type == IDLE) |
| 678 | goto ret_idle; |
Thomas Tsou | fa3a787 | 2013-10-17 21:23:34 -0400 | [diff] [blame] | 679 | |
Pau Espin Pedrol | 9bb24a1 | 2019-07-03 15:43:03 +0200 | [diff] [blame] | 680 | max_toa = (type == RACH || type == EXT_RACH) ? |
| 681 | mMaxExpectedDelayAB : mMaxExpectedDelayNB; |
Vadim Yanitskiy | a8b3565 | 2018-10-22 02:52:18 +0200 | [diff] [blame] | 682 | |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 683 | /* Detect normal or RACH bursts */ |
Pau Espin Pedrol | 7ee2d10 | 2019-07-04 13:02:12 +0200 | [diff] [blame] | 684 | rc = detectAnyBurst(*burst, mTSC, BURST_THRESH, mSPSRx, type, max_toa, &ebp); |
Pau Espin Pedrol | d6dbb1b | 2019-07-03 15:23:56 +0200 | [diff] [blame] | 685 | if (rc <= 0) { |
| 686 | if (rc == -SIGERR_CLIP) |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 687 | LOGCHAN(chan, DTRXDUL, NOTICE) << "Clipping detected on received RACH or Normal Burst"; |
Pau Espin Pedrol | d6dbb1b | 2019-07-03 15:23:56 +0200 | [diff] [blame] | 688 | else if (rc != SIGERR_NONE) |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 689 | LOGCHAN(chan, DTRXDUL, NOTICE) << "Unhandled RACH or Normal Burst detection error"; |
Pau Espin Pedrol | 95c8318 | 2019-07-03 16:01:12 +0200 | [diff] [blame] | 690 | goto ret_idle; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 691 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 692 | |
Pau Espin Pedrol | d6dbb1b | 2019-07-03 15:23:56 +0200 | [diff] [blame] | 693 | type = (CorrType) rc; |
Pau Espin Pedrol | 7ee2d10 | 2019-07-04 13:02:12 +0200 | [diff] [blame] | 694 | bi->toa = ebp.toa; |
Pau Espin Pedrol | cf6113b | 2019-07-01 20:42:53 +0200 | [diff] [blame] | 695 | bi->tsc = ebp.tsc; |
| 696 | bi->ci = ebp.ci; |
Pau Espin Pedrol | 7ee2d10 | 2019-07-04 13:02:12 +0200 | [diff] [blame] | 697 | rxBurst = demodAnyBurst(*burst, mSPSRx, ebp.amp, ebp.toa, type); |
Thomas Tsou | ef25dba | 2013-11-14 15:31:24 -0500 | [diff] [blame] | 698 | |
Pau Espin Pedrol | 0e67cf2 | 2019-07-02 14:59:47 +0200 | [diff] [blame] | 699 | /* EDGE demodulator returns 444 (gSlotLen * 3) bits */ |
Pau Espin Pedrol | cf6113b | 2019-07-01 20:42:53 +0200 | [diff] [blame] | 700 | if (rxBurst->size() == EDGE_BURST_NBITS) { |
| 701 | bi->modulation = MODULATION_8PSK; |
Pau Espin Pedrol | 0e67cf2 | 2019-07-02 14:59:47 +0200 | [diff] [blame] | 702 | bi->nbits = EDGE_BURST_NBITS; |
Pau Espin Pedrol | cf6113b | 2019-07-01 20:42:53 +0200 | [diff] [blame] | 703 | } else { /* size() here is actually gSlotLen + 8, due to guard periods */ |
| 704 | bi->modulation = MODULATION_GMSK; |
Pau Espin Pedrol | 0e67cf2 | 2019-07-02 14:59:47 +0200 | [diff] [blame] | 705 | bi->nbits = gSlotLen; |
Pau Espin Pedrol | cf6113b | 2019-07-01 20:42:53 +0200 | [diff] [blame] | 706 | } |
Pau Espin Pedrol | 0e67cf2 | 2019-07-02 14:59:47 +0200 | [diff] [blame] | 707 | |
Pau Espin Pedrol | 25ae190 | 2019-07-01 16:40:44 +0200 | [diff] [blame] | 708 | // Convert -1..+1 soft bits to 0..1 soft bits |
Pau Espin Pedrol | 7dc07b9 | 2019-07-01 17:55:01 +0200 | [diff] [blame] | 709 | vectorSlicer(bi->rx_burst, rxBurst->begin(), bi->nbits); |
Pau Espin Pedrol | 25ae190 | 2019-07-01 16:40:44 +0200 | [diff] [blame] | 710 | |
Pau Espin Pedrol | 7dc07b9 | 2019-07-01 17:55:01 +0200 | [diff] [blame] | 711 | delete rxBurst; |
Thomas Tsou | 30421a7 | 2013-11-13 23:14:48 -0500 | [diff] [blame] | 712 | delete radio_burst; |
Pau Espin Pedrol | 923b4bc | 2019-09-06 15:01:26 +0200 | [diff] [blame] | 713 | return 0; |
Pau Espin Pedrol | 95c8318 | 2019-07-03 16:01:12 +0200 | [diff] [blame] | 714 | |
| 715 | ret_idle: |
| 716 | bi->idle = true; |
| 717 | delete radio_burst; |
Pau Espin Pedrol | 923b4bc | 2019-09-06 15:01:26 +0200 | [diff] [blame] | 718 | return 0; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 719 | } |
| 720 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 721 | void Transceiver::reset() |
| 722 | { |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 723 | for (size_t i = 0; i < mTxPriorityQueues.size(); i++) |
| 724 | mTxPriorityQueues[i].clear(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 725 | } |
| 726 | |
Pau Espin Pedrol | 7c405a0 | 2017-07-04 16:24:06 +0200 | [diff] [blame] | 727 | |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 728 | /** |
| 729 | * Matches a buffer with a command. |
| 730 | * @param buf a buffer to look command in |
| 731 | * @param cmd a command to look in buffer |
| 732 | * @param params pointer to arguments, or NULL |
| 733 | * @return true if command matches, otherwise false |
| 734 | */ |
| 735 | static bool match_cmd(char *buf, |
| 736 | const char *cmd, char **params) |
| 737 | { |
| 738 | size_t cmd_len = strlen(cmd); |
| 739 | |
| 740 | /* Check a command itself */ |
| 741 | if (strncmp(buf, cmd, cmd_len)) |
| 742 | return false; |
| 743 | |
| 744 | /* A command has arguments */ |
| 745 | if (params != NULL) { |
| 746 | /* Make sure there is a space */ |
| 747 | if (buf[cmd_len] != ' ') |
| 748 | return false; |
| 749 | |
| 750 | /* Update external pointer */ |
| 751 | *params = buf + cmd_len + 1; |
| 752 | } |
| 753 | |
| 754 | return true; |
| 755 | } |
| 756 | |
Eric | a7143bf | 2020-04-08 01:39:17 +0200 | [diff] [blame] | 757 | void Transceiver::ctrl_sock_send(ctrl_msg& m, int chan) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 758 | { |
Eric | a7143bf | 2020-04-08 01:39:17 +0200 | [diff] [blame] | 759 | ctrl_sock_state& s = mCtrlSockets[chan]; |
| 760 | struct osmo_fd *conn_bfd = &s.conn_bfd; |
| 761 | |
| 762 | s.txmsgqueue.push_back(m); |
| 763 | conn_bfd->when |= OSMO_FD_WRITE; |
| 764 | } |
| 765 | |
| 766 | int Transceiver::ctrl_sock_write(int chan) |
| 767 | { |
| 768 | int rc; |
| 769 | ctrl_sock_state& s = mCtrlSockets[chan]; |
| 770 | |
| 771 | if (s.conn_bfd.fd < 0) { |
| 772 | return -EIO; |
| 773 | } |
| 774 | |
| 775 | while (s.txmsgqueue.size()) { |
| 776 | const ctrl_msg m = s.txmsgqueue.front(); |
| 777 | |
| 778 | s.conn_bfd.when &= ~OSMO_FD_WRITE; |
| 779 | |
| 780 | /* try to send it over the socket */ |
| 781 | rc = write(s.conn_bfd.fd, m.data, strlen(m.data) + 1); |
| 782 | if (rc == 0) |
| 783 | goto close; |
| 784 | if (rc < 0) { |
| 785 | if (errno == EAGAIN) { |
| 786 | s.conn_bfd.when |= OSMO_FD_WRITE; |
| 787 | break; |
| 788 | } |
| 789 | goto close; |
| 790 | } |
| 791 | |
| 792 | s.txmsgqueue.pop_front(); |
| 793 | } |
| 794 | return 0; |
| 795 | |
| 796 | close: |
| 797 | LOGCHAN(chan, DTRXCTRL, NOTICE) << "mCtrlSockets write(" << s.conn_bfd.fd << ") failed: " << rc; |
| 798 | return -1; |
| 799 | } |
| 800 | |
| 801 | int Transceiver::ctrl_sock_handle_rx(int chan) |
| 802 | { |
| 803 | ctrl_msg cmd_received; |
| 804 | ctrl_msg cmd_to_send; |
| 805 | char *buffer = cmd_received.data; |
| 806 | char *response = cmd_to_send.data; |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 807 | char *command, *params; |
Vadim Yanitskiy | 4d9b59c | 2018-03-09 02:54:45 +0700 | [diff] [blame] | 808 | int msgLen; |
Eric | a7143bf | 2020-04-08 01:39:17 +0200 | [diff] [blame] | 809 | ctrl_sock_state& s = mCtrlSockets[chan]; |
Thomas Tsou | d647ec5 | 2013-10-29 15:17:34 -0400 | [diff] [blame] | 810 | |
Vadim Yanitskiy | 4d9b59c | 2018-03-09 02:54:45 +0700 | [diff] [blame] | 811 | /* Attempt to read from control socket */ |
Eric | a7143bf | 2020-04-08 01:39:17 +0200 | [diff] [blame] | 812 | msgLen = read(s.conn_bfd.fd, buffer, sizeof(cmd_received.data)-1); |
| 813 | if (msgLen < 0 && errno == EAGAIN) |
| 814 | return 0; /* Try again later */ |
Pau Espin Pedrol | b9d2515 | 2019-07-01 19:03:49 +0200 | [diff] [blame] | 815 | if (msgLen <= 0) { |
Eric | a7143bf | 2020-04-08 01:39:17 +0200 | [diff] [blame] | 816 | LOGCHAN(chan, DTRXCTRL, NOTICE) << "mCtrlSockets read(" << s.conn_bfd.fd << ") failed: " << msgLen; |
| 817 | return -EIO; |
Pau Espin Pedrol | b9d2515 | 2019-07-01 19:03:49 +0200 | [diff] [blame] | 818 | } |
Vadim Yanitskiy | 4d9b59c | 2018-03-09 02:54:45 +0700 | [diff] [blame] | 819 | |
Eric | a7143bf | 2020-04-08 01:39:17 +0200 | [diff] [blame] | 820 | |
Vadim Yanitskiy | 4d9b59c | 2018-03-09 02:54:45 +0700 | [diff] [blame] | 821 | /* Zero-terminate received string */ |
| 822 | buffer[msgLen] = '\0'; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 823 | |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 824 | /* Verify a command signature */ |
| 825 | if (strncmp(buffer, "CMD ", 4)) { |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 826 | LOGCHAN(chan, DTRXCTRL, NOTICE) << "bogus message on control interface"; |
Eric | a7143bf | 2020-04-08 01:39:17 +0200 | [diff] [blame] | 827 | return -EIO; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 828 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 829 | |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 830 | /* Set command pointer */ |
| 831 | command = buffer + 4; |
Pau Espin Pedrol | fc73c07 | 2019-05-03 19:40:00 +0200 | [diff] [blame] | 832 | LOGCHAN(chan, DTRXCTRL, INFO) << "command is '" << command << "'"; |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 833 | |
| 834 | if (match_cmd(command, "POWEROFF", NULL)) { |
Tom Tsou | eb54bdd | 2014-11-25 16:06:32 -0800 | [diff] [blame] | 835 | stop(); |
| 836 | sprintf(response,"RSP POWEROFF 0"); |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 837 | } else if (match_cmd(command, "POWERON", NULL)) { |
Tom Tsou | 365bc38 | 2016-10-19 15:26:04 -0700 | [diff] [blame] | 838 | if (!start()) { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 839 | sprintf(response,"RSP POWERON 1"); |
Tom Tsou | 365bc38 | 2016-10-19 15:26:04 -0700 | [diff] [blame] | 840 | } else { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 841 | sprintf(response,"RSP POWERON 0"); |
Alexander Chemeris | 5a06806 | 2015-06-20 01:38:47 +0300 | [diff] [blame] | 842 | for (int i = 0; i < 8; i++) { |
| 843 | for (int j = 0; j < 8; j++) |
| 844 | mHandover[i][j] = false; |
| 845 | } |
Tom Tsou | 365bc38 | 2016-10-19 15:26:04 -0700 | [diff] [blame] | 846 | } |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 847 | } else if (match_cmd(command, "HANDOVER", ¶ms)) { |
Vadim Yanitskiy | c0c6d70 | 2018-03-09 05:08:23 +0700 | [diff] [blame] | 848 | unsigned ts = 0, ss = 0; |
| 849 | sscanf(params, "%u %u", &ts, &ss); |
| 850 | if (ts > 7 || ss > 7) { |
Pau Espin Pedrol | 0fafe03 | 2019-11-27 13:17:59 +0100 | [diff] [blame] | 851 | sprintf(response, "RSP HANDOVER 1 %u %u", ts, ss); |
Vadim Yanitskiy | c0c6d70 | 2018-03-09 05:08:23 +0700 | [diff] [blame] | 852 | } else { |
| 853 | mHandover[ts][ss] = true; |
| 854 | sprintf(response, "RSP HANDOVER 0 %u %u", ts, ss); |
| 855 | } |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 856 | } else if (match_cmd(command, "NOHANDOVER", ¶ms)) { |
Vadim Yanitskiy | c0c6d70 | 2018-03-09 05:08:23 +0700 | [diff] [blame] | 857 | unsigned ts = 0, ss = 0; |
| 858 | sscanf(params, "%u %u", &ts, &ss); |
| 859 | if (ts > 7 || ss > 7) { |
| 860 | sprintf(response, "RSP NOHANDOVER 1 %u %u", ts, ss); |
| 861 | } else { |
| 862 | mHandover[ts][ss] = false; |
| 863 | sprintf(response, "RSP NOHANDOVER 0 %u %u", ts, ss); |
| 864 | } |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 865 | } else if (match_cmd(command, "SETMAXDLY", ¶ms)) { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 866 | //set expected maximum time-of-arrival |
| 867 | int maxDelay; |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 868 | sscanf(params, "%d", &maxDelay); |
Alexander Chemeris | 78d1fc9 | 2016-03-19 21:16:22 +0300 | [diff] [blame] | 869 | mMaxExpectedDelayAB = maxDelay; // 1 GSM symbol is approx. 1 km |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 870 | sprintf(response,"RSP SETMAXDLY 0 %d",maxDelay); |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 871 | } else if (match_cmd(command, "SETMAXDLYNB", ¶ms)) { |
Alexander Chemeris | 78d1fc9 | 2016-03-19 21:16:22 +0300 | [diff] [blame] | 872 | //set expected maximum time-of-arrival |
| 873 | int maxDelay; |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 874 | sscanf(params, "%d", &maxDelay); |
Alexander Chemeris | 78d1fc9 | 2016-03-19 21:16:22 +0300 | [diff] [blame] | 875 | mMaxExpectedDelayNB = maxDelay; // 1 GSM symbol is approx. 1 km |
| 876 | sprintf(response,"RSP SETMAXDLYNB 0 %d",maxDelay); |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 877 | } else if (match_cmd(command, "SETRXGAIN", ¶ms)) { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 878 | //set expected maximum time-of-arrival |
| 879 | int newGain; |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 880 | sscanf(params, "%d", &newGain); |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 881 | newGain = mRadioInterface->setRxGain(newGain, chan); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 882 | sprintf(response,"RSP SETRXGAIN 0 %d",newGain); |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 883 | } else if (match_cmd(command, "NOISELEV", NULL)) { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 884 | if (mOn) { |
Thomas Tsou | a0179e3 | 2013-11-14 15:52:04 -0500 | [diff] [blame] | 885 | float lev = mStates[chan].mNoiseLev; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 886 | sprintf(response,"RSP NOISELEV 0 %d", |
Thomas Tsou | a0179e3 | 2013-11-14 15:52:04 -0500 | [diff] [blame] | 887 | (int) round(20.0 * log10(rxFullScale / lev))); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 888 | } |
| 889 | else { |
| 890 | sprintf(response,"RSP NOISELEV 1 0"); |
| 891 | } |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 892 | } else if (match_cmd(command, "SETPOWER", ¶ms)) { |
Tom Tsou | a4d1a41 | 2014-11-25 15:46:56 -0800 | [diff] [blame] | 893 | int power; |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 894 | sscanf(params, "%d", &power); |
Tom Tsou | a4d1a41 | 2014-11-25 15:46:56 -0800 | [diff] [blame] | 895 | power = mRadioInterface->setPowerAttenuation(power, chan); |
| 896 | mStates[chan].mPower = power; |
| 897 | sprintf(response, "RSP SETPOWER 0 %d", power); |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 898 | } else if (match_cmd(command, "ADJPOWER", ¶ms)) { |
Tom Tsou | a4d1a41 | 2014-11-25 15:46:56 -0800 | [diff] [blame] | 899 | int power, step; |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 900 | sscanf(params, "%d", &step); |
Tom Tsou | a4d1a41 | 2014-11-25 15:46:56 -0800 | [diff] [blame] | 901 | power = mStates[chan].mPower + step; |
| 902 | power = mRadioInterface->setPowerAttenuation(power, chan); |
| 903 | mStates[chan].mPower = power; |
| 904 | sprintf(response, "RSP ADJPOWER 0 %d", power); |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 905 | } else if (match_cmd(command, "RXTUNE", ¶ms)) { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 906 | // tune receiver |
| 907 | int freqKhz; |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 908 | sscanf(params, "%d", &freqKhz); |
Thomas Tsou | 477b77c | 2013-11-15 16:13:59 -0500 | [diff] [blame] | 909 | mRxFreq = freqKhz * 1e3; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 910 | if (!mRadioInterface->tuneRx(mRxFreq, chan)) { |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 911 | LOGCHAN(chan, DTRXCTRL, FATAL) << "RX failed to tune"; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 912 | sprintf(response,"RSP RXTUNE 1 %d",freqKhz); |
| 913 | } |
| 914 | else |
| 915 | sprintf(response,"RSP RXTUNE 0 %d",freqKhz); |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 916 | } else if (match_cmd(command, "TXTUNE", ¶ms)) { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 917 | // tune txmtr |
| 918 | int freqKhz; |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 919 | sscanf(params, "%d", &freqKhz); |
Thomas Tsou | 477b77c | 2013-11-15 16:13:59 -0500 | [diff] [blame] | 920 | mTxFreq = freqKhz * 1e3; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 921 | if (!mRadioInterface->tuneTx(mTxFreq, chan)) { |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 922 | LOGCHAN(chan, DTRXCTRL, FATAL) << "TX failed to tune"; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 923 | sprintf(response,"RSP TXTUNE 1 %d",freqKhz); |
| 924 | } |
| 925 | else |
| 926 | sprintf(response,"RSP TXTUNE 0 %d",freqKhz); |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 927 | } else if (match_cmd(command, "SETTSC", ¶ms)) { |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 928 | // set TSC |
Thomas Tsou | 3f32ab5 | 2013-11-15 16:32:54 -0500 | [diff] [blame] | 929 | unsigned TSC; |
Vadim Yanitskiy | 8c6c5d2 | 2018-03-09 05:01:21 +0700 | [diff] [blame] | 930 | sscanf(params, "%u", &TSC); |
Tom Tsou | 6031734 | 2017-03-30 19:36:41 -0700 | [diff] [blame] | 931 | if (TSC > 7) { |
Thomas Tsou | d3fccea | 2013-11-15 14:22:53 -0500 | [diff] [blame] | 932 | sprintf(response, "RSP SETTSC 1 %d", TSC); |
Tom Tsou | 6031734 | 2017-03-30 19:36:41 -0700 | [diff] [blame] | 933 | } else { |
Pau Espin Pedrol | 441d82a | 2018-12-04 16:37:24 +0100 | [diff] [blame] | 934 | LOGC(DTRXCTRL, NOTICE) << "Changing TSC from " << mTSC << " to " << TSC; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 935 | mTSC = TSC; |
Thomas Tsou | 83e0689 | 2013-08-20 16:10:01 -0400 | [diff] [blame] | 936 | sprintf(response,"RSP SETTSC 0 %d", TSC); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 937 | } |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 938 | } else if (match_cmd(command, "SETSLOT", ¶ms)) { |
Alexander Chemeris | 1fe5282 | 2015-05-20 12:02:29 -0700 | [diff] [blame] | 939 | // set slot type |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 940 | int corrCode; |
| 941 | int timeslot; |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 942 | sscanf(params, "%d %d", ×lot, &corrCode); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 943 | if ((timeslot < 0) || (timeslot > 7)) { |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 944 | LOGCHAN(chan, DTRXCTRL, NOTICE) << "bogus message on control interface"; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 945 | sprintf(response,"RSP SETSLOT 1 %d %d",timeslot,corrCode); |
Eric | a7143bf | 2020-04-08 01:39:17 +0200 | [diff] [blame] | 946 | return 0; |
Pau Espin Pedrol | 7c405a0 | 2017-07-04 16:24:06 +0200 | [diff] [blame] | 947 | } |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 948 | mStates[chan].chanType[timeslot] = (ChannelCombination) corrCode; |
| 949 | setModulus(timeslot, chan); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 950 | sprintf(response,"RSP SETSLOT 0 %d %d",timeslot,corrCode); |
Pau Espin Pedrol | 13c8109 | 2019-07-03 16:17:06 +0200 | [diff] [blame] | 951 | } else if (match_cmd(command, "SETFORMAT", ¶ms)) { |
| 952 | // set TRXD protocol version |
| 953 | unsigned version_recv; |
| 954 | sscanf(params, "%u", &version_recv); |
Pau Espin Pedrol | c3325b9 | 2019-07-22 17:47:02 +0200 | [diff] [blame] | 955 | LOGCHAN(chan, DTRXCTRL, INFO) << "BTS requests TRXD version switch: " << version_recv; |
Pau Espin Pedrol | 13c8109 | 2019-07-03 16:17:06 +0200 | [diff] [blame] | 956 | if (version_recv > TRX_DATA_FORMAT_VER) { |
Pau Espin Pedrol | c3325b9 | 2019-07-22 17:47:02 +0200 | [diff] [blame] | 957 | LOGCHAN(chan, DTRXCTRL, INFO) << "rejecting TRXD version " << version_recv |
| 958 | << "in favor of " << TRX_DATA_FORMAT_VER; |
Pau Espin Pedrol | 13c8109 | 2019-07-03 16:17:06 +0200 | [diff] [blame] | 959 | sprintf(response, "RSP SETFORMAT %u %u", TRX_DATA_FORMAT_VER, version_recv); |
| 960 | } else { |
Pau Espin Pedrol | c3325b9 | 2019-07-22 17:47:02 +0200 | [diff] [blame] | 961 | LOGCHAN(chan, DTRXCTRL, NOTICE) << "switching to TRXD version " << version_recv; |
| 962 | mVersionTRXD[chan] = version_recv; |
Pau Espin Pedrol | 13c8109 | 2019-07-03 16:17:06 +0200 | [diff] [blame] | 963 | sprintf(response, "RSP SETFORMAT %u %u", version_recv, version_recv); |
| 964 | } |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 965 | } else if (match_cmd(command, "_SETBURSTTODISKMASK", ¶ms)) { |
Martin Hauke | 066fd04 | 2019-10-13 19:08:00 +0200 | [diff] [blame] | 966 | // debug command! may change or disappear without notice |
Alexander Chemeris | e692ce9 | 2015-06-12 00:15:31 -0400 | [diff] [blame] | 967 | // set a mask which bursts to dump to disk |
| 968 | int mask; |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 969 | sscanf(params, "%d", &mask); |
Alexander Chemeris | e692ce9 | 2015-06-12 00:15:31 -0400 | [diff] [blame] | 970 | mWriteBurstToDiskMask = mask; |
| 971 | sprintf(response,"RSP _SETBURSTTODISKMASK 0 %d",mask); |
Vadim Yanitskiy | a62fcf7 | 2018-03-09 03:24:08 +0700 | [diff] [blame] | 972 | } else { |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 973 | LOGCHAN(chan, DTRXCTRL, NOTICE) << "bogus command " << command << " on control interface."; |
Alexander Chemeris | 4438a9f | 2013-04-08 00:14:08 +0200 | [diff] [blame] | 974 | sprintf(response,"RSP ERR 1"); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 975 | } |
| 976 | |
Pau Espin Pedrol | fc73c07 | 2019-05-03 19:40:00 +0200 | [diff] [blame] | 977 | LOGCHAN(chan, DTRXCTRL, INFO) << "response is '" << response << "'"; |
Eric | a7143bf | 2020-04-08 01:39:17 +0200 | [diff] [blame] | 978 | transceiver->ctrl_sock_send(cmd_to_send, chan); |
| 979 | return 0; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 980 | } |
| 981 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 982 | bool Transceiver::driveTxPriorityQueue(size_t chan) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 983 | { |
Pau Espin Pedrol | b9d2515 | 2019-07-01 19:03:49 +0200 | [diff] [blame] | 984 | int msgLen; |
Tom Tsou | e887108 | 2016-07-01 02:46:04 -0700 | [diff] [blame] | 985 | int burstLen; |
Pau Espin Pedrol | e4166be | 2019-08-26 11:21:55 +0200 | [diff] [blame] | 986 | struct trxd_hdr_v01_dl *dl; |
| 987 | char buffer[sizeof(*dl) + EDGE_BURST_NBITS]; |
Vadim Yanitskiy | b312325 | 2019-07-15 23:53:08 +0700 | [diff] [blame] | 988 | uint32_t fn; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 989 | |
| 990 | // check data socket |
Pau Espin Pedrol | b9d2515 | 2019-07-01 19:03:49 +0200 | [diff] [blame] | 991 | msgLen = read(mDataSockets[chan], buffer, sizeof(buffer)); |
| 992 | if (msgLen <= 0) { |
Eric | 1a26b4f | 2020-04-13 00:03:01 +0200 | [diff] [blame] | 993 | LOGCHAN(chan, DTRXDDL, NOTICE) << "mDataSockets read(" << mDataSockets[chan] << ") failed: " << msgLen; |
Pau Espin Pedrol | b9d2515 | 2019-07-01 19:03:49 +0200 | [diff] [blame] | 994 | return false; |
| 995 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 996 | |
Pau Espin Pedrol | e4166be | 2019-08-26 11:21:55 +0200 | [diff] [blame] | 997 | switch (msgLen) { |
| 998 | case sizeof(*dl) + gSlotLen: /* GSM burst */ |
| 999 | burstLen = gSlotLen; |
| 1000 | break; |
| 1001 | case sizeof(*dl) + EDGE_BURST_NBITS: /* EDGE burst */ |
| 1002 | if (mSPSTx != 4) { |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 1003 | LOGCHAN(chan, DTRXDDL, ERROR) << "EDGE burst received but SPS is set to " << mSPSTx; |
Pau Espin Pedrol | e4166be | 2019-08-26 11:21:55 +0200 | [diff] [blame] | 1004 | return false; |
| 1005 | } |
| 1006 | burstLen = EDGE_BURST_NBITS; |
| 1007 | break; |
| 1008 | default: |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 1009 | LOGCHAN(chan, DTRXDDL, ERROR) << "badly formatted packet on GSM->TRX interface (len="<< msgLen << ")"; |
Tom Tsou | e887108 | 2016-07-01 02:46:04 -0700 | [diff] [blame] | 1010 | return false; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1011 | } |
| 1012 | |
Pau Espin Pedrol | e4166be | 2019-08-26 11:21:55 +0200 | [diff] [blame] | 1013 | dl = (struct trxd_hdr_v01_dl *) buffer; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1014 | |
Vadim Yanitskiy | b312325 | 2019-07-15 23:53:08 +0700 | [diff] [blame] | 1015 | /* Convert TDMA FN to the host endianness */ |
Pau Espin Pedrol | e4166be | 2019-08-26 11:21:55 +0200 | [diff] [blame] | 1016 | fn = osmo_load32be(&dl->common.fn); |
Vadim Yanitskiy | b312325 | 2019-07-15 23:53:08 +0700 | [diff] [blame] | 1017 | |
Vadim Yanitskiy | dd571c6 | 2019-07-15 23:56:56 +0700 | [diff] [blame] | 1018 | /* Make sure we support the received header format */ |
Pau Espin Pedrol | e4166be | 2019-08-26 11:21:55 +0200 | [diff] [blame] | 1019 | switch (dl->common.version) { |
Vadim Yanitskiy | dd571c6 | 2019-07-15 23:56:56 +0700 | [diff] [blame] | 1020 | case 0: |
| 1021 | /* Version 1 has the same format */ |
| 1022 | case 1: |
| 1023 | break; |
Vadim Yanitskiy | dd571c6 | 2019-07-15 23:56:56 +0700 | [diff] [blame] | 1024 | default: |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 1025 | LOGCHAN(chan, DTRXDDL, ERROR) << "Rx TRXD message with unknown header version " << unsigned(dl->common.version); |
Vadim Yanitskiy | dd571c6 | 2019-07-15 23:56:56 +0700 | [diff] [blame] | 1026 | return false; |
| 1027 | } |
| 1028 | |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 1029 | LOGCHAN(chan, DTRXDDL, DEBUG) << "Rx TRXD message (hdr_ver=" << unsigned(dl->common.version) |
| 1030 | << "): fn=" << fn << ", tn=" << unsigned(dl->common.tn) << ", burst_len=" << burstLen; |
Pau Espin Pedrol | 7c405a0 | 2017-07-04 16:24:06 +0200 | [diff] [blame] | 1031 | |
Tom Tsou | 7c741ec | 2016-07-19 11:20:59 -0700 | [diff] [blame] | 1032 | BitVector newBurst(burstLen); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1033 | BitVector::iterator itr = newBurst.begin(); |
Pau Espin Pedrol | e4166be | 2019-08-26 11:21:55 +0200 | [diff] [blame] | 1034 | uint8_t *bufferItr = dl->soft_bits; |
Pau Espin Pedrol | 7c405a0 | 2017-07-04 16:24:06 +0200 | [diff] [blame] | 1035 | while (itr < newBurst.end()) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1036 | *itr++ = *bufferItr++; |
Pau Espin Pedrol | 7c405a0 | 2017-07-04 16:24:06 +0200 | [diff] [blame] | 1037 | |
Pau Espin Pedrol | e4166be | 2019-08-26 11:21:55 +0200 | [diff] [blame] | 1038 | GSM::Time currTime = GSM::Time(fn, dl->common.tn); |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1039 | |
Pau Espin Pedrol | e4166be | 2019-08-26 11:21:55 +0200 | [diff] [blame] | 1040 | addRadioVector(chan, newBurst, dl->tx_att, currTime); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1041 | |
| 1042 | return true; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1043 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1044 | |
Pau Espin Pedrol | 76ff96e | 2019-08-26 12:05:48 +0200 | [diff] [blame] | 1045 | bool Transceiver::driveReceiveRadio() |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1046 | { |
Pau Espin Pedrol | db936b9 | 2018-09-03 16:50:49 +0200 | [diff] [blame] | 1047 | int rc = mRadioInterface->driveReceiveRadio(); |
| 1048 | if (rc == 0) { |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1049 | usleep(100000); |
Pau Espin Pedrol | 76ff96e | 2019-08-26 12:05:48 +0200 | [diff] [blame] | 1050 | return true; |
Alexander Chemeris | 6a2bf0d | 2015-05-24 19:28:09 -0400 | [diff] [blame] | 1051 | } |
Pau Espin Pedrol | 76ff96e | 2019-08-26 12:05:48 +0200 | [diff] [blame] | 1052 | if (rc < 0) |
| 1053 | return false; |
| 1054 | |
| 1055 | if (mForceClockInterface || mTransmitDeadlineClock > mLastClockUpdateTime + GSM::Time(216,0)) { |
| 1056 | mForceClockInterface = false; |
| 1057 | return writeClockInterface(); |
| 1058 | } |
| 1059 | return true; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1060 | } |
| 1061 | |
Pau Espin Pedrol | 607a414 | 2019-07-01 13:56:17 +0200 | [diff] [blame] | 1062 | void Transceiver::logRxBurst(size_t chan, const struct trx_ul_burst_ind *bi) |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 1063 | { |
Pau Espin Pedrol | 7dc07b9 | 2019-07-01 17:55:01 +0200 | [diff] [blame] | 1064 | std::ostringstream os; |
| 1065 | for (size_t i=0; i < bi->nbits; i++) { |
| 1066 | if (bi->rx_burst[i] > 0.5) os << "1"; |
| 1067 | else if (bi->rx_burst[i] > 0.25) os << "|"; |
| 1068 | else if (bi->rx_burst[i] > 0.0) os << "'"; |
| 1069 | else os << "-"; |
| 1070 | } |
| 1071 | |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 1072 | LOGCHAN(chan, DTRXDUL, DEBUG) << std::fixed << std::right |
Pau Espin Pedrol | 1fba104 | 2019-09-06 14:22:31 +0200 | [diff] [blame] | 1073 | << " time: " << unsigned(bi->tn) << ":" << bi->fn |
Pau Espin Pedrol | 607a414 | 2019-07-01 13:56:17 +0200 | [diff] [blame] | 1074 | << " RSSI: " << std::setw(5) << std::setprecision(1) << (bi->rssi - rssiOffset) |
| 1075 | << "dBFS/" << std::setw(6) << -bi->rssi << "dBm" |
| 1076 | << " noise: " << std::setw(5) << std::setprecision(1) << (bi->noise - rssiOffset) |
| 1077 | << "dBFS/" << std::setw(6) << -bi->noise << "dBm" |
Pau Espin Pedrol | ddd18a5 | 2019-06-28 17:01:16 +0200 | [diff] [blame] | 1078 | << " TOA: " << std::setw(5) << std::setprecision(2) << bi->toa |
Pau Espin Pedrol | cf6113b | 2019-07-01 20:42:53 +0200 | [diff] [blame] | 1079 | << " C/I: " << std::setw(5) << std::setprecision(2) << bi->ci << "dB" |
Pau Espin Pedrol | 7dc07b9 | 2019-07-01 17:55:01 +0200 | [diff] [blame] | 1080 | << " bits: " << os; |
Tom Tsou | b0aefcb | 2016-03-06 03:44:34 -0800 | [diff] [blame] | 1081 | } |
| 1082 | |
Pau Espin Pedrol | 76ff96e | 2019-08-26 12:05:48 +0200 | [diff] [blame] | 1083 | bool Transceiver::driveReceiveFIFO(size_t chan) |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1084 | { |
Pau Espin Pedrol | ddd18a5 | 2019-06-28 17:01:16 +0200 | [diff] [blame] | 1085 | struct trx_ul_burst_ind bi; |
Pau Espin Pedrol | 923b4bc | 2019-09-06 15:01:26 +0200 | [diff] [blame] | 1086 | int rc; |
Pau Espin Pedrol | ddd18a5 | 2019-06-28 17:01:16 +0200 | [diff] [blame] | 1087 | |
Pau Espin Pedrol | 923b4bc | 2019-09-06 15:01:26 +0200 | [diff] [blame] | 1088 | if ((rc = pullRadioVector(chan, &bi)) < 0) { |
| 1089 | if (rc == -ENOENT) { /* timeslot off, continue processing */ |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 1090 | LOGCHAN(chan, DTRXDUL, DEBUG) << unsigned(bi.tn) << ":" << bi.fn << " timeslot is off"; |
Pau Espin Pedrol | 923b4bc | 2019-09-06 15:01:26 +0200 | [diff] [blame] | 1091 | return true; |
| 1092 | } |
| 1093 | return false; /* other errors: we want to stop the process */ |
| 1094 | } |
Pau Espin Pedrol | 76ff96e | 2019-08-26 12:05:48 +0200 | [diff] [blame] | 1095 | |
Pau Espin Pedrol | 15fa64b | 2019-07-01 20:41:55 +0200 | [diff] [blame] | 1096 | if (!bi.idle) |
Pau Espin Pedrol | 76ff96e | 2019-08-26 12:05:48 +0200 | [diff] [blame] | 1097 | logRxBurst(chan, &bi); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1098 | |
Pau Espin Pedrol | c3325b9 | 2019-07-22 17:47:02 +0200 | [diff] [blame] | 1099 | switch (mVersionTRXD[chan]) { |
Pau Espin Pedrol | 15fa64b | 2019-07-01 20:41:55 +0200 | [diff] [blame] | 1100 | case 0: |
Pau Espin Pedrol | 76ff96e | 2019-08-26 12:05:48 +0200 | [diff] [blame] | 1101 | return trxd_send_burst_ind_v0(chan, mDataSockets[chan], &bi); |
Pau Espin Pedrol | cf6113b | 2019-07-01 20:42:53 +0200 | [diff] [blame] | 1102 | case 1: |
Pau Espin Pedrol | 76ff96e | 2019-08-26 12:05:48 +0200 | [diff] [blame] | 1103 | return trxd_send_burst_ind_v1(chan, mDataSockets[chan], &bi); |
Pau Espin Pedrol | 15fa64b | 2019-07-01 20:41:55 +0200 | [diff] [blame] | 1104 | default: |
| 1105 | OSMO_ASSERT(false); |
| 1106 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1107 | } |
| 1108 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1109 | void Transceiver::driveTxFIFO() |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1110 | { |
| 1111 | |
| 1112 | /** |
Pau Espin Pedrol | 7c405a0 | 2017-07-04 16:24:06 +0200 | [diff] [blame] | 1113 | Features a carefully controlled latency mechanism, to |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1114 | assure that transmit packets arrive at the radio/USRP |
| 1115 | before they need to be transmitted. |
| 1116 | |
| 1117 | Deadline clock indicates the burst that needs to be |
| 1118 | pushed into the FIFO right NOW. If transmit queue does |
| 1119 | not have a burst, stick in filler data. |
| 1120 | */ |
| 1121 | |
| 1122 | |
| 1123 | RadioClock *radioClock = (mRadioInterface->getClock()); |
Pau Espin Pedrol | 7c405a0 | 2017-07-04 16:24:06 +0200 | [diff] [blame] | 1124 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1125 | if (mOn) { |
| 1126 | //radioClock->wait(); // wait until clock updates |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 1127 | LOGC(DTRXCLK, DEBUG) << "radio clock " << radioClock->get(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1128 | while (radioClock->get() + mTransmitLatency > mTransmitDeadlineClock) { |
| 1129 | // if underrun, then we're not providing bursts to radio/USRP fast |
| 1130 | // enough. Need to increase latency by one GSM frame. |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 1131 | if (mRadioInterface->getWindowType() == RadioDevice::TX_WINDOW_USRP1) { |
kurtis.heimerl | e380af3 | 2011-11-26 03:18:55 +0000 | [diff] [blame] | 1132 | if (mRadioInterface->isUnderrun()) { |
ttsou | 2173abf | 2012-08-08 00:51:31 +0000 | [diff] [blame] | 1133 | // only update latency at the defined frame interval |
| 1134 | if (radioClock->get() > mLatencyUpdateTime + GSM::Time(USB_LATENCY_INTRVL)) { |
kurtis.heimerl | e380af3 | 2011-11-26 03:18:55 +0000 | [diff] [blame] | 1135 | mTransmitLatency = mTransmitLatency + GSM::Time(1,0); |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 1136 | LOGC(DTRXCLK, INFO) << "new latency: " << mTransmitLatency << " (underrun " |
| 1137 | << radioClock->get() << " vs " |
| 1138 | << mLatencyUpdateTime + GSM::Time(USB_LATENCY_INTRVL) << ")"; |
kurtis.heimerl | e380af3 | 2011-11-26 03:18:55 +0000 | [diff] [blame] | 1139 | mLatencyUpdateTime = radioClock->get(); |
| 1140 | } |
| 1141 | } |
| 1142 | else { |
| 1143 | // if underrun hasn't occurred in the last sec (216 frames) drop |
| 1144 | // transmit latency by a timeslot |
Pau Espin Pedrol | e564f0f | 2018-04-24 18:43:51 +0200 | [diff] [blame] | 1145 | if (mTransmitLatency > mRadioInterface->minLatency()) { |
kurtis.heimerl | e380af3 | 2011-11-26 03:18:55 +0000 | [diff] [blame] | 1146 | if (radioClock->get() > mLatencyUpdateTime + GSM::Time(216,0)) { |
| 1147 | mTransmitLatency.decTN(); |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 1148 | LOGC(DTRXCLK, INFO) << "reduced latency: " << mTransmitLatency; |
kurtis.heimerl | e380af3 | 2011-11-26 03:18:55 +0000 | [diff] [blame] | 1149 | mLatencyUpdateTime = radioClock->get(); |
| 1150 | } |
| 1151 | } |
| 1152 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1153 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1154 | // time to push burst to transmit FIFO |
| 1155 | pushRadioVector(mTransmitDeadlineClock); |
| 1156 | mTransmitDeadlineClock.incTN(); |
| 1157 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1158 | } |
Thomas Tsou | 92c16df | 2013-09-28 18:04:19 -0400 | [diff] [blame] | 1159 | |
| 1160 | radioClock->wait(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1161 | } |
| 1162 | |
| 1163 | |
| 1164 | |
Pau Espin Pedrol | 76ff96e | 2019-08-26 12:05:48 +0200 | [diff] [blame] | 1165 | bool Transceiver::writeClockInterface() |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1166 | { |
Pau Espin Pedrol | b9d2515 | 2019-07-01 19:03:49 +0200 | [diff] [blame] | 1167 | int msgLen; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1168 | char command[50]; |
| 1169 | // FIXME -- This should be adaptive. |
| 1170 | sprintf(command,"IND CLOCK %llu",(unsigned long long) (mTransmitDeadlineClock.FN()+2)); |
| 1171 | |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 1172 | LOGC(DTRXCLK, INFO) << "sending " << command; |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1173 | |
Pau Espin Pedrol | b9d2515 | 2019-07-01 19:03:49 +0200 | [diff] [blame] | 1174 | msgLen = write(mClockSocket, command, strlen(command) + 1); |
Pau Espin Pedrol | 76ff96e | 2019-08-26 12:05:48 +0200 | [diff] [blame] | 1175 | if (msgLen <= 0) { |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 1176 | LOGC(DTRXCLK, ERROR) << "mClockSocket write(" << mClockSocket << ") failed: " << msgLen; |
Pau Espin Pedrol | 76ff96e | 2019-08-26 12:05:48 +0200 | [diff] [blame] | 1177 | return false; |
| 1178 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1179 | |
| 1180 | mLastClockUpdateTime = mTransmitDeadlineClock; |
Pau Espin Pedrol | 76ff96e | 2019-08-26 12:05:48 +0200 | [diff] [blame] | 1181 | return true; |
Thomas Tsou | 92c16df | 2013-09-28 18:04:19 -0400 | [diff] [blame] | 1182 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1183 | |
Pau Espin Pedrol | 720b912 | 2019-07-22 18:10:52 +0200 | [diff] [blame] | 1184 | void *RxUpperLoopAdapter(TrxChanThParams *params) |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1185 | { |
Pau Espin Pedrol | 5b60c98 | 2018-09-20 18:04:46 +0200 | [diff] [blame] | 1186 | char thread_name[16]; |
Pau Espin Pedrol | 720b912 | 2019-07-22 18:10:52 +0200 | [diff] [blame] | 1187 | Transceiver *trx = params->trx; |
| 1188 | size_t num = params->num; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1189 | |
Pau Espin Pedrol | 720b912 | 2019-07-22 18:10:52 +0200 | [diff] [blame] | 1190 | free(params); |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1191 | |
Pau Espin Pedrol | 5b60c98 | 2018-09-20 18:04:46 +0200 | [diff] [blame] | 1192 | snprintf(thread_name, 16, "RxUpper%zu", num); |
| 1193 | set_selfthread_name(thread_name); |
| 1194 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1195 | while (1) { |
Pau Espin Pedrol | 76ff96e | 2019-08-26 12:05:48 +0200 | [diff] [blame] | 1196 | if (!trx->driveReceiveFIFO(num)) { |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 1197 | LOGCHAN(num, DTRXDUL, FATAL) << "Something went wrong in thread " << thread_name << ", requesting stop"; |
Pau Espin Pedrol | 76ff96e | 2019-08-26 12:05:48 +0200 | [diff] [blame] | 1198 | osmo_signal_dispatch(SS_MAIN, S_MAIN_STOP_REQUIRED, NULL); |
| 1199 | break; |
| 1200 | } |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1201 | pthread_testcancel(); |
| 1202 | } |
| 1203 | return NULL; |
| 1204 | } |
| 1205 | |
| 1206 | void *RxLowerLoopAdapter(Transceiver *transceiver) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1207 | { |
Pau Espin Pedrol | 5b60c98 | 2018-09-20 18:04:46 +0200 | [diff] [blame] | 1208 | set_selfthread_name("RxLower"); |
| 1209 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1210 | while (1) { |
Pau Espin Pedrol | 76ff96e | 2019-08-26 12:05:48 +0200 | [diff] [blame] | 1211 | if (!transceiver->driveReceiveRadio()) { |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 1212 | LOGC(DTRXDUL, FATAL) << "Something went wrong in thread RxLower, requesting stop"; |
Pau Espin Pedrol | 76ff96e | 2019-08-26 12:05:48 +0200 | [diff] [blame] | 1213 | osmo_signal_dispatch(SS_MAIN, S_MAIN_STOP_REQUIRED, NULL); |
| 1214 | break; |
| 1215 | } |
Thomas Tsou | 92c16df | 2013-09-28 18:04:19 -0400 | [diff] [blame] | 1216 | pthread_testcancel(); |
| 1217 | } |
| 1218 | return NULL; |
| 1219 | } |
| 1220 | |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1221 | void *TxLowerLoopAdapter(Transceiver *transceiver) |
Thomas Tsou | 92c16df | 2013-09-28 18:04:19 -0400 | [diff] [blame] | 1222 | { |
Pau Espin Pedrol | 5b60c98 | 2018-09-20 18:04:46 +0200 | [diff] [blame] | 1223 | set_selfthread_name("TxLower"); |
| 1224 | |
Thomas Tsou | 92c16df | 2013-09-28 18:04:19 -0400 | [diff] [blame] | 1225 | while (1) { |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1226 | transceiver->driveTxFIFO(); |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1227 | pthread_testcancel(); |
| 1228 | } |
| 1229 | return NULL; |
| 1230 | } |
| 1231 | |
Pau Espin Pedrol | 720b912 | 2019-07-22 18:10:52 +0200 | [diff] [blame] | 1232 | void *TxUpperLoopAdapter(TrxChanThParams *params) |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1233 | { |
Pau Espin Pedrol | 5b60c98 | 2018-09-20 18:04:46 +0200 | [diff] [blame] | 1234 | char thread_name[16]; |
Pau Espin Pedrol | 720b912 | 2019-07-22 18:10:52 +0200 | [diff] [blame] | 1235 | Transceiver *trx = params->trx; |
| 1236 | size_t num = params->num; |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1237 | |
Pau Espin Pedrol | 720b912 | 2019-07-22 18:10:52 +0200 | [diff] [blame] | 1238 | free(params); |
Thomas Tsou | 204a9f1 | 2013-10-29 18:34:16 -0400 | [diff] [blame] | 1239 | |
Pau Espin Pedrol | 5b60c98 | 2018-09-20 18:04:46 +0200 | [diff] [blame] | 1240 | snprintf(thread_name, 16, "TxUpper%zu", num); |
| 1241 | set_selfthread_name(thread_name); |
| 1242 | |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1243 | while (1) { |
Pau Espin Pedrol | 76ff96e | 2019-08-26 12:05:48 +0200 | [diff] [blame] | 1244 | if (!trx->driveTxPriorityQueue(num)) { |
Pau Espin Pedrol | 9f2baf3 | 2019-12-19 21:03:03 +0100 | [diff] [blame] | 1245 | LOGCHAN(num, DTRXDDL, FATAL) << "Something went wrong in thread " << thread_name << ", requesting stop"; |
Pau Espin Pedrol | 76ff96e | 2019-08-26 12:05:48 +0200 | [diff] [blame] | 1246 | osmo_signal_dispatch(SS_MAIN, S_MAIN_STOP_REQUIRED, NULL); |
| 1247 | break; |
| 1248 | } |
dburgess | b3a0ca4 | 2011-10-12 07:44:40 +0000 | [diff] [blame] | 1249 | pthread_testcancel(); |
| 1250 | } |
| 1251 | return NULL; |
| 1252 | } |