Ivan Kluchnikov | 5c2f9fb | 2012-02-05 02:27:17 +0400 | [diff] [blame] | 1 | /*GPRSSocket.cpp |
| 2 | * |
| 3 | * Copyright (C) 2011 Ivan Klyuchnikov |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or |
| 6 | * modify it under the terms of the GNU General Public License |
| 7 | * as published by the Free Software Foundation; either version 2 |
| 8 | * of the License, or (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 18 | */ |
| 19 | |
| 20 | #include <Sockets.h> |
| 21 | #include <Threads.h> |
| 22 | #include <BitVector.h> |
Ivan Kluchnikov | 3450640 | 2012-02-20 15:24:16 +0400 | [diff] [blame^] | 23 | #include <gsmtap.h> |
Ivan Kluchnikov | 5c2f9fb | 2012-02-05 02:27:17 +0400 | [diff] [blame] | 24 | #include "GPRSSocket.h" |
Ivan Kluchnikov | 5c2f9fb | 2012-02-05 02:27:17 +0400 | [diff] [blame] | 25 | #include "bssgp.h" |
| 26 | |
| 27 | #define MAX_UDP_LENGTH 1500 |
| 28 | |
| 29 | #define RLCMAC_DATA_BLOCK 0 |
| 30 | #define RLCMAC_CONTROL_BLOCK 1 |
| 31 | |
| 32 | // TODO: We should take ports and IP from config. |
| 33 | UDPSocket GPRSRLCMACSocket(5070, "127.0.0.1", 5934); |
Ivan Kluchnikov | 3450640 | 2012-02-20 15:24:16 +0400 | [diff] [blame^] | 34 | UDPSocket GSMTAPSocket(5077, "127.0.0.1", 4729); |
| 35 | |
| 36 | void sendToGSMTAP(uint8_t * data, unsigned len) |
| 37 | { |
| 38 | char buffer[MAX_UDP_LENGTH]; |
| 39 | int ofs = 0; |
| 40 | |
| 41 | // Build header |
| 42 | struct gsmtap_hdr *header = (struct gsmtap_hdr *)buffer; |
| 43 | header->version = 2; |
| 44 | header->hdr_len = sizeof(struct gsmtap_hdr) >> 2; |
| 45 | header->type = 0x08; |
| 46 | header->timeslot = 5; |
| 47 | header->arfcn = 0; |
| 48 | header->signal_dbm = 0; |
| 49 | header->snr_db = 0; |
| 50 | header->frame_number = 0; |
| 51 | header->sub_type = 0; |
| 52 | header->antenna_nr = 0; |
| 53 | header->sub_slot = 0; |
| 54 | header->res = 0; |
| 55 | |
| 56 | ofs += sizeof(*header); |
| 57 | |
| 58 | // Add frame data |
| 59 | unsigned j = 0; |
| 60 | for (unsigned i = ofs; i < len+ofs; i++) |
| 61 | { |
| 62 | buffer[i] = (char)data[j]; |
| 63 | j++; |
| 64 | } |
| 65 | ofs += len; |
| 66 | // Write the GSMTAP packet |
| 67 | GSMTAPSocket.write(buffer, ofs); |
| 68 | } |
| 69 | |
Ivan Kluchnikov | 5c2f9fb | 2012-02-05 02:27:17 +0400 | [diff] [blame] | 70 | |
| 71 | void sendToOpenBTS(BitVector * vector) |
| 72 | { |
| 73 | char buffer[MAX_UDP_LENGTH]; |
| 74 | int ofs = 0; |
| 75 | vector->pack((unsigned char*)&buffer[ofs]); |
| 76 | ofs += vector->size() >> 3; |
| 77 | COUT("Send to OpenBTS: " << *vector); |
| 78 | GPRSRLCMACSocket.write(buffer, ofs); |
| 79 | } |
| 80 | |
| 81 | void writePDassignment(BitVector * dest, uint8_t TFI, uint32_t TLLI) |
| 82 | { |
| 83 | // TODO We should use our implementation of encode RLC/MAC Control messages. |
| 84 | unsigned wp = 0; |
| 85 | dest->writeField(wp,0x1,2); // Payload Type |
| 86 | dest->writeField(wp,0x0,2); // Uplink block with TDMA framenumber |
| 87 | dest->writeField(wp,0x1,1); // Suppl/Polling Bit |
| 88 | dest->writeField(wp,0x1,3); // Uplink state flag |
| 89 | dest->writeField(wp,0x2,6); // MESSAGE TYPE |
| 90 | dest->writeField(wp,0x0,2); // Page Mode |
| 91 | |
| 92 | dest->writeField(wp,0x0,1); // switch PERSIST_LEVEL: off |
| 93 | dest->writeField(wp,0x2,2); // switch TLLI : on |
| 94 | dest->writeField(wp,TLLI,32); // TLLI |
| 95 | |
| 96 | dest->writeField(wp,0x0,1); // Message escape |
| 97 | dest->writeField(wp,0x0,2); // Medium Access Method: Dynamic Allocation |
| 98 | dest->writeField(wp,0x0,1); // RLC acknowledged mode |
| 99 | |
| 100 | dest->writeField(wp,0x0,1); // the network establishes no new downlink TBF for the mobile station |
| 101 | dest->writeField(wp,0x1,8); // timeslot 7 |
| 102 | dest->writeField(wp,0x1,8); // TIMING_ADVANCE_INDEX |
| 103 | |
| 104 | dest->writeField(wp,0x0,1); // switch TIMING_ADVANCE_VALUE = off |
| 105 | dest->writeField(wp,0x1,1); // switch TIMING_ADVANCE_INDEX = on |
| 106 | dest->writeField(wp,0xC,4); // TIMING_ADVANCE_INDEX |
| 107 | dest->writeField(wp,0x7,3); // TIMING_ADVANCE_TIMESLOT_NUMBER |
| 108 | |
| 109 | dest->writeField(wp,0x0,1); // switch POWER CONTROL = off |
| 110 | dest->writeField(wp,0x1,1); // Frequency Parameters information elements = present |
| 111 | |
| 112 | dest->writeField(wp,0x2,3); // Training Sequence Code (TSC) = 2 |
| 113 | dest->writeField(wp,0x1,2); // Indirect encoding struct = present |
| 114 | dest->writeField(wp,0x0,6); // MAIO |
| 115 | dest->writeField(wp,0xE,4); // MA_Number |
| 116 | dest->writeField(wp,0x8,4); // CHANGE_MARK_1 CHANGE_MARK_2 |
| 117 | |
| 118 | dest->writeField(wp,0x1,1); // switch TFI : on |
| 119 | dest->writeField(wp,0x14,5);// TFI |
| 120 | |
| 121 | dest->writeField(wp,0x1,1); // Power Control Parameters IE = present |
| 122 | dest->writeField(wp,0x0,4); // ALPHA power control parameter |
| 123 | dest->writeField(wp,0x0,1); // switch GAMMA_TN0 = off |
| 124 | dest->writeField(wp,0x0,1); // switch GAMMA_TN1 = off |
| 125 | dest->writeField(wp,0x0,1); // switch GAMMA_TN2 = off |
| 126 | dest->writeField(wp,0x0,1); // switch GAMMA_TN3 = off |
| 127 | dest->writeField(wp,0x0,1); // switch GAMMA_TN4 = off |
| 128 | dest->writeField(wp,0x0,1); // switch GAMMA_TN5 = off |
| 129 | dest->writeField(wp,0x0,1); // switch GAMMA_TN6 = off |
| 130 | dest->writeField(wp,0x1,1); // switch GAMMA_TN7 = on |
| 131 | dest->writeField(wp,0x0,5); // GAMMA_TN7 |
| 132 | |
| 133 | dest->writeField(wp,0x0,1); // TBF Starting TIME IE not present |
| 134 | dest->writeField(wp,0x0,1); // Measurement Mapping struct not present |
| 135 | } |
| 136 | |
Ivan Kluchnikov | 3450640 | 2012-02-20 15:24:16 +0400 | [diff] [blame^] | 137 | void writePUassignment(BitVector * dest, uint8_t TFI, uint32_t TLLI) |
| 138 | { |
| 139 | // TODO We should use our implementation of encode RLC/MAC Control messages. |
| 140 | unsigned wp = 0; |
| 141 | dest->writeField(wp,0x1,2); // Payload Type |
| 142 | dest->writeField(wp,0x0,2); // Uplink block with TDMA framenumber |
| 143 | dest->writeField(wp,0x1,1); // Suppl/Polling Bit |
| 144 | dest->writeField(wp,0x1,3); // Uplink state flag |
| 145 | |
| 146 | |
| 147 | dest->writeField(wp,0xa,6); // MESSAGE TYPE |
| 148 | |
| 149 | dest->writeField(wp,0x0,2); // Page Mode |
| 150 | |
| 151 | dest->writeField(wp,0x0,1); // switch PERSIST_LEVEL: off |
| 152 | dest->writeField(wp,0x2,2); // switch TLLI : on |
| 153 | dest->writeField(wp,TLLI,32); // TLLI |
| 154 | |
| 155 | dest->writeField(wp,0x0,1); // Message escape |
| 156 | dest->writeField(wp,0x0,2); // CHANNEL_CODING_COMMAND |
| 157 | dest->writeField(wp,0x0,1); // TLLI_BLOCK_CHANNEL_CODING |
| 158 | |
| 159 | dest->writeField(wp,0x1,1); // switch TIMING_ADVANCE_VALUE = on |
| 160 | dest->writeField(wp,0x0,6); // TIMING_ADVANCE_VALUE |
| 161 | dest->writeField(wp,0x0,1); // switch TIMING_ADVANCE_INDEX = off |
| 162 | |
| 163 | dest->writeField(wp,0x0,1); // Frequency Parameters = off |
| 164 | |
| 165 | dest->writeField(wp,0x1,2); // Dynamic Allocation = off |
| 166 | |
| 167 | dest->writeField(wp,0x0,1); // Dynamic Allocation |
| 168 | dest->writeField(wp,0x0,1); // P0 = off |
| 169 | |
| 170 | dest->writeField(wp,0x1,1); // USF_GRANULARITY |
| 171 | dest->writeField(wp,0x1,1); // switch TFI : on |
| 172 | dest->writeField(wp,TFI,5);// TFI |
| 173 | |
| 174 | dest->writeField(wp,0x0,1); // |
| 175 | dest->writeField(wp,0x0,1); // TBF Starting Time = off |
| 176 | dest->writeField(wp,0x0,1); // Timeslot Allocation |
| 177 | |
| 178 | dest->writeField(wp,0x0,5); // USF_TN 0 - 4 |
| 179 | dest->writeField(wp,0x1,1); // USF_TN 5 |
| 180 | dest->writeField(wp,0x1,3); // USF_TN 5 |
| 181 | dest->writeField(wp,0x0,2); // USF_TN 6 - 7 |
| 182 | // dest->writeField(wp,0x0,1); // Measurement Mapping struct not present |
| 183 | } |
| 184 | |
| 185 | void writeIARestOctetsDownlinkAssignment(BitVector * dest, uint8_t TFI, uint32_t TLLI) |
| 186 | { |
| 187 | // GMS 04.08 10.5.2.37b 10.5.2.16 |
| 188 | unsigned wp = 0; |
| 189 | dest->writeField(wp, 3, 2); // "HH" |
| 190 | dest->writeField(wp, 1, 2); // "01" Packet Downlink Assignment |
| 191 | dest->writeField(wp,TLLI,32); // TLLI |
| 192 | dest->writeField(wp,0x1,1); // switch TFI : on |
| 193 | dest->writeField(wp,TFI,5); // TFI |
| 194 | dest->writeField(wp,0x0,1); // RLC acknowledged mode |
| 195 | dest->writeField(wp,0x0,1); // ALPHA = present |
| 196 | //dest->writeField(wp,0x0,4); // ALPHA power control parameter |
| 197 | dest->writeField(wp,0x0,5); // GAMMA power control parameter |
| 198 | dest->writeField(wp,0x1,1); // Polling Bit |
| 199 | dest->writeField(wp,0x1,1); // TA_VALID ??? |
| 200 | dest->writeField(wp,0x1,1); // switch TIMING_ADVANCE_INDEX = on |
| 201 | dest->writeField(wp,0xC,4); // TIMING_ADVANCE_INDEX |
| 202 | dest->writeField(wp,0x1,1); // TBF Starting TIME present |
| 203 | dest->writeField(wp,0xffff,16); // TBF Starting TIME (we should set it in OpenBTS) |
| 204 | dest->writeField(wp,0x0,1); // P0 not present |
| 205 | } |
| 206 | |
Ivan Kluchnikov | 5c2f9fb | 2012-02-05 02:27:17 +0400 | [diff] [blame] | 207 | void writePUack(BitVector * dest, uint8_t TFI, uint32_t TLLI, unsigned CV, unsigned BSN) |
| 208 | { |
| 209 | // TODO We should use our implementation of encode RLC/MAC Control messages. |
| 210 | unsigned wp = 0; |
| 211 | dest->writeField(wp,0x1,2); // payload |
| 212 | dest->writeField(wp,0x0,2); // Uplink block with TDMA framenumber |
| 213 | if (CV == 0) dest->writeField(wp,0x1,1); // Suppl/Polling Bit |
| 214 | else dest->writeField(wp,0x0,1); //Suppl/Polling Bit |
| 215 | dest->writeField(wp,0x1,3); // Uplink state flag |
| 216 | |
| 217 | //dest->writeField(wp,0x0,1); // Reduced block sequence number |
| 218 | //dest->writeField(wp,BSN+6,5); // Radio transaction identifier |
| 219 | //dest->writeField(wp,0x1,1); // Final segment |
| 220 | //dest->writeField(wp,0x1,1); // Address control |
| 221 | |
| 222 | //dest->writeField(wp,0x0,2); // Power reduction: 0 |
| 223 | //dest->writeField(wp,TFI,5); // Temporary flow identifier |
| 224 | //dest->writeField(wp,0x1,1); // Direction |
| 225 | |
| 226 | dest->writeField(wp,0x09,6); // MESSAGE TYPE |
| 227 | dest->writeField(wp,0x0,2); // Page Mode |
| 228 | |
| 229 | dest->writeField(wp,0x0,2); |
| 230 | dest->writeField(wp,TFI,5); // Uplink TFI |
| 231 | dest->writeField(wp,0x0,1); |
| 232 | |
| 233 | dest->writeField(wp,0x0,2); // CS1 |
| 234 | if (CV == 0) dest->writeField(wp,0x1,1); // FINAL_ACK_INDICATION |
| 235 | else dest->writeField(wp,0x0,1); // FINAL_ACK_INDICATION |
| 236 | dest->writeField(wp,BSN+1,7); // STARTING_SEQUENCE_NUMBER |
| 237 | // RECEIVE_BLOCK_BITMAP |
| 238 | for (unsigned i=0; i<8; i++) { |
| 239 | dest->writeField(wp,0xff,8); |
| 240 | } |
| 241 | dest->writeField(wp,0x1,1); // CONTENTION_RESOLUTION_TLLI = present |
| 242 | dest->writeField(wp,TLLI,8*4); |
| 243 | dest->writeField(wp,0x00,4); //spare |
| 244 | } |
| 245 | |
Ivan Kluchnikov | 3450640 | 2012-02-20 15:24:16 +0400 | [diff] [blame^] | 246 | void RLCMACExtractData(uint8_t* tfi, uint32_t* tlli, RlcMacUplinkDataBlock_t * dataBlock, uint8_t* rlc_data, unsigned* dataIndex) |
| 247 | { |
| 248 | unsigned blockDataLen = 0; |
| 249 | unsigned dataOctetNum = 0; |
| 250 | |
| 251 | *tfi = dataBlock->TFI; |
| 252 | if (dataBlock->E_1 == 0) // Extension octet follows immediately |
| 253 | { |
| 254 | // TODO We should implement case with several LLC PDU in one data block. |
| 255 | blockDataLen = dataBlock->LENGTH_INDICATOR[0]; |
| 256 | } |
| 257 | else |
| 258 | { |
| 259 | blockDataLen = 20; // RLC data length without 3 header octets. |
| 260 | if(dataBlock->TI == 1) // TLLI field is present |
| 261 | { |
| 262 | *tlli = dataBlock->TLLI; |
| 263 | blockDataLen -= 4; // TLLI length |
| 264 | if (dataBlock->PI == 1) // PFI is present if TI field indicates presence of TLLI |
| 265 | { |
| 266 | blockDataLen -= 1; // PFI length |
| 267 | } |
| 268 | } |
| 269 | } |
| 270 | |
| 271 | for (unsigned i = *dataIndex; i < *dataIndex + blockDataLen; i++) |
| 272 | { |
| 273 | rlc_data[i] = dataBlock->RLC_DATA[dataOctetNum]; |
| 274 | dataOctetNum++; |
| 275 | } |
| 276 | *dataIndex += blockDataLen; |
| 277 | } |
| 278 | |
| 279 | void sendUplinkAck(uint8_t tfi, uint32_t tlli, RlcMacUplinkDataBlock_t * dataBlock) |
| 280 | { |
| 281 | BitVector packetUplinkAck(23*8); |
| 282 | packetUplinkAck.unhex("2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
| 283 | writePUack(&packetUplinkAck, tfi, tlli, dataBlock->CV, dataBlock->BSN); |
| 284 | COUT("RLCMAC_CONTROL_BLOCK>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"); |
| 285 | RlcMacDownlink_t * pUA = (RlcMacDownlink_t *)malloc(sizeof(RlcMacUplink_t)); |
| 286 | decode_gsm_rlcmac_downlink(&packetUplinkAck, pUA); |
| 287 | free(pUA); |
| 288 | COUT("RLCMAC_CONTROL_BLOCK_END------------------------------"); |
| 289 | sendToOpenBTS(&packetUplinkAck); |
| 290 | } |
| 291 | |
| 292 | void RLCMACDispatchDataBlock(unsigned* waitData, BitVector *vector, uint8_t* tfi, uint32_t* tlli, uint8_t* rlc_data, unsigned* dataIndex) |
| 293 | { |
| 294 | static DataBlockDispatcherState state = WaitSequenceStart; |
| 295 | static unsigned prevBSN = -1; |
| 296 | if ((*waitData == 1)&&(state == WaitNextSequence)) |
| 297 | { |
| 298 | state = WaitSequenceStart; |
| 299 | } |
| 300 | |
| 301 | COUT("RLCMAC_DATA_BLOCK<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"); |
| 302 | RlcMacUplinkDataBlock_t * dataBlock = (RlcMacUplinkDataBlock_t *)malloc(sizeof(RlcMacUplinkDataBlock_t)); |
| 303 | decode_gsm_rlcmac_uplink_data(vector, dataBlock); |
| 304 | COUT("RLCMAC_DATA_BLOCK_END------------------------------"); |
| 305 | |
| 306 | switch (state) { |
| 307 | case WaitSequenceStart: |
| 308 | if (dataBlock->BSN == 0) |
| 309 | { |
| 310 | *dataIndex = 0; |
| 311 | RLCMACExtractData(tfi, tlli, dataBlock, rlc_data, dataIndex); |
| 312 | sendUplinkAck(*tfi, *tlli, dataBlock); |
| 313 | state = WaitNextBlock; |
| 314 | prevBSN = 0; |
| 315 | } |
| 316 | break; |
| 317 | case WaitNextBlock: |
| 318 | if (prevBSN == (dataBlock->BSN - 1)) |
| 319 | { |
| 320 | RLCMACExtractData(tfi, tlli, dataBlock, rlc_data, dataIndex); |
| 321 | sendUplinkAck(*tfi, *tlli, dataBlock); |
| 322 | if (dataBlock->CV == 0) |
| 323 | { |
| 324 | // Recieved last Data Block in this sequence. |
| 325 | sendToGSMTAP(rlc_data, *dataIndex); |
| 326 | state = WaitNextSequence; |
| 327 | prevBSN = -1; |
| 328 | *waitData = 0; |
| 329 | } |
| 330 | else |
| 331 | { |
| 332 | prevBSN = dataBlock->BSN; |
| 333 | state = WaitNextBlock; |
| 334 | } |
| 335 | } |
| 336 | else |
| 337 | { |
| 338 | // Recieved Data Block with unexpected BSN. |
| 339 | // We should try to find nesessary Data Block. |
| 340 | state = WaitNextBlock; |
| 341 | } |
| 342 | break; |
| 343 | case WaitNextSequence: |
| 344 | // Now we just ignore all Data Blocks and wait next Uplink TBF |
| 345 | break; |
| 346 | } |
| 347 | free(dataBlock); |
| 348 | } |
| 349 | |
| 350 | void RLCMACDispatchControlBlock(unsigned* waitData, BitVector *vector, uint8_t* tfi, uint32_t* tlli, uint8_t* rlc_data, unsigned* dataIndex) |
| 351 | { |
| 352 | static unsigned shutUp = 0; |
| 353 | COUT("RLCMAC_CONTROL_BLOCK<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"); |
| 354 | RlcMacUplink_t * controlBlock = (RlcMacUplink_t *)malloc(sizeof(RlcMacUplink_t)); |
| 355 | decode_gsm_rlcmac_uplink(vector, controlBlock); |
| 356 | COUT("RLCMAC_CONTROL_BLOCK_END------------------------------"); |
| 357 | switch (controlBlock->u.MESSAGE_TYPE) { |
| 358 | case MT_PACKET_CONTROL_ACK: |
| 359 | if (shutUp == 0) |
| 360 | { |
| 361 | COUT("SEND IA Rest Octets Downlink Assignment>>>>>>>>>>>>>>>>>>"); |
| 362 | BitVector IARestOctetsDownlinkAssignment(23*8); |
| 363 | IARestOctetsDownlinkAssignment.unhex("2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
| 364 | writeIARestOctetsDownlinkAssignment(&IARestOctetsDownlinkAssignment, 20, *tlli); |
| 365 | sendToOpenBTS(&IARestOctetsDownlinkAssignment); |
| 366 | usleep(500000); |
| 367 | sendToSGSN(*tfi, *tlli, rlc_data, *dataIndex); |
| 368 | //sendToGSMTAP(rlc_data, *dataIndex); |
| 369 | shutUp = 1; |
| 370 | } |
| 371 | break; |
| 372 | case MT_PACKET_DOWNLINK_ACK_NACK: |
| 373 | COUT("SEND PacketUplinkAssignment>>>>>>>>>>>>>>>>>>"); |
| 374 | BitVector PacketUplinkAssignment(23*8); |
| 375 | PacketUplinkAssignment.unhex("2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
| 376 | writePUassignment(&PacketUplinkAssignment, 21, *tlli); |
| 377 | sendToOpenBTS(&PacketUplinkAssignment); |
| 378 | *waitData = 1; |
| 379 | break; |
| 380 | } |
| 381 | free(controlBlock); |
| 382 | |
| 383 | } |
| 384 | |
| 385 | void RLCMACDispatchBlock(BitVector *vector) |
Ivan Kluchnikov | 5c2f9fb | 2012-02-05 02:27:17 +0400 | [diff] [blame] | 386 | { |
| 387 | static uint8_t rlc_data[60]; |
Ivan Kluchnikov | 3450640 | 2012-02-20 15:24:16 +0400 | [diff] [blame^] | 388 | static uint8_t *tfi = (uint8_t *)malloc(sizeof(uint8_t)); |
| 389 | static uint32_t *tlli = (uint32_t *)malloc(sizeof(uint32_t)); |
| 390 | static unsigned *dataIndex = (unsigned *)malloc(sizeof(unsigned)); |
| 391 | static unsigned waitData = 1; |
| 392 | |
Ivan Kluchnikov | 5c2f9fb | 2012-02-05 02:27:17 +0400 | [diff] [blame] | 393 | unsigned readIndex = 0; |
| 394 | unsigned payload = vector->readField(readIndex, 2); |
| 395 | |
| 396 | switch (payload) { |
Ivan Kluchnikov | 3450640 | 2012-02-20 15:24:16 +0400 | [diff] [blame^] | 397 | case RLCMAC_DATA_BLOCK: |
| 398 | RLCMACDispatchDataBlock(&waitData,vector, tfi, tlli, rlc_data, dataIndex); |
Ivan Kluchnikov | 5c2f9fb | 2012-02-05 02:27:17 +0400 | [diff] [blame] | 399 | break; |
| 400 | case RLCMAC_CONTROL_BLOCK: |
Ivan Kluchnikov | 3450640 | 2012-02-20 15:24:16 +0400 | [diff] [blame^] | 401 | RLCMACDispatchControlBlock(&waitData, vector, tfi, tlli, rlc_data, dataIndex); |
Ivan Kluchnikov | 5c2f9fb | 2012-02-05 02:27:17 +0400 | [diff] [blame] | 402 | break; |
| 403 | default: |
| 404 | COUT("Unknown RLCMAC block payload\n"); |
| 405 | } |
| 406 | } |
| 407 | |
| 408 | void *RLCMACSocket(void *) |
| 409 | { |
| 410 | BitVector *vector = new BitVector(23*8); |
| 411 | GPRSRLCMACSocket.nonblocking(); |
| 412 | while (1) { |
| 413 | char buf[MAX_UDP_LENGTH]; |
| 414 | int count = GPRSRLCMACSocket.read(buf, 3000); |
| 415 | if (count>0) { |
| 416 | vector->unpack((const unsigned char*)buf); |
| 417 | COUT("Recieve from OpenBTS (MS): " << *vector); |
Ivan Kluchnikov | 3450640 | 2012-02-20 15:24:16 +0400 | [diff] [blame^] | 418 | RLCMACDispatchBlock(vector); |
Ivan Kluchnikov | 5c2f9fb | 2012-02-05 02:27:17 +0400 | [diff] [blame] | 419 | } |
| 420 | } |
| 421 | } |