Separation of GPRS PCU application from main OpenBTS code and changing PCU architecture (First step).
1. pcu - main program for GPRS PCU. 2. gprs_rlcmac - RLC/MAC layer implementation for PCU. Added list for TBF, TBF allocation, establishment, release. 3. gprs_bssgp_pcu - BSSGP protocol implementation for PCU. 4. pcu_l1_if - interface for communication PCU application with OpenBTS.zecke/hacks/quick-exit
parent
3450640624
commit
8ee6051b72
@ -1,421 +0,0 @@ |
||||
/*GPRSSocket.cpp
|
||||
* |
||||
* Copyright (C) 2011 Ivan Klyuchnikov |
||||
* |
||||
* This program is free software; you can redistribute it and/or |
||||
* modify it under the terms of the GNU General Public License |
||||
* as published by the Free Software Foundation; either version 2 |
||||
* of the License, or (at your option) any later version. |
||||
* |
||||
* This program is distributed in the hope that it will be useful, |
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
* GNU General Public License for more details. |
||||
* |
||||
* You should have received a copy of the GNU General Public License |
||||
* along with this program; if not, write to the Free Software |
||||
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
||||
*/ |
||||
|
||||
#include <Sockets.h> |
||||
#include <Threads.h> |
||||
#include <BitVector.h> |
||||
#include <gsmtap.h> |
||||
#include "GPRSSocket.h" |
||||
#include "bssgp.h" |
||||
|
||||
#define MAX_UDP_LENGTH 1500 |
||||
|
||||
#define RLCMAC_DATA_BLOCK 0 |
||||
#define RLCMAC_CONTROL_BLOCK 1 |
||||
|
||||
// TODO: We should take ports and IP from config.
|
||||
UDPSocket GPRSRLCMACSocket(5070, "127.0.0.1", 5934); |
||||
UDPSocket GSMTAPSocket(5077, "127.0.0.1", 4729); |
||||
|
||||
void sendToGSMTAP(uint8_t * data, unsigned len) |
||||
{ |
||||
char buffer[MAX_UDP_LENGTH]; |
||||
int ofs = 0; |
||||
|
||||
// Build header
|
||||
struct gsmtap_hdr *header = (struct gsmtap_hdr *)buffer; |
||||
header->version = 2; |
||||
header->hdr_len = sizeof(struct gsmtap_hdr) >> 2; |
||||
header->type = 0x08; |
||||
header->timeslot = 5; |
||||
header->arfcn = 0; |
||||
header->signal_dbm = 0; |
||||
header->snr_db = 0; |
||||
header->frame_number = 0; |
||||
header->sub_type = 0; |
||||
header->antenna_nr = 0; |
||||
header->sub_slot = 0; |
||||
header->res = 0; |
||||
|
||||
ofs += sizeof(*header); |
||||
|
||||
// Add frame data
|
||||
unsigned j = 0; |
||||
for (unsigned i = ofs; i < len+ofs; i++) |
||||
{ |
||||
buffer[i] = (char)data[j]; |
||||
j++; |
||||
} |
||||
ofs += len; |
||||
// Write the GSMTAP packet
|
||||
GSMTAPSocket.write(buffer, ofs); |
||||
} |
||||
|
||||
|
||||
void sendToOpenBTS(BitVector * vector) |
||||
{ |
||||
char buffer[MAX_UDP_LENGTH]; |
||||
int ofs = 0; |
||||
vector->pack((unsigned char*)&buffer[ofs]); |
||||
ofs += vector->size() >> 3; |
||||
COUT("Send to OpenBTS: " << *vector); |
||||
GPRSRLCMACSocket.write(buffer, ofs); |
||||
} |
||||
|
||||
void writePDassignment(BitVector * dest, uint8_t TFI, uint32_t TLLI) |
||||
{ |
||||
// TODO We should use our implementation of encode RLC/MAC Control messages.
|
||||
unsigned wp = 0; |
||||
dest->writeField(wp,0x1,2); // Payload Type
|
||||
dest->writeField(wp,0x0,2); // Uplink block with TDMA framenumber
|
||||
dest->writeField(wp,0x1,1); // Suppl/Polling Bit
|
||||
dest->writeField(wp,0x1,3); // Uplink state flag
|
||||
dest->writeField(wp,0x2,6); // MESSAGE TYPE
|
||||
dest->writeField(wp,0x0,2); // Page Mode
|
||||
|
||||
dest->writeField(wp,0x0,1); // switch PERSIST_LEVEL: off
|
||||
dest->writeField(wp,0x2,2); // switch TLLI : on
|
||||
dest->writeField(wp,TLLI,32); // TLLI
|
||||
|
||||
dest->writeField(wp,0x0,1); // Message escape
|
||||
dest->writeField(wp,0x0,2); // Medium Access Method: Dynamic Allocation
|
||||
dest->writeField(wp,0x0,1); // RLC acknowledged mode
|
||||
|
||||
dest->writeField(wp,0x0,1); // the network establishes no new downlink TBF for the mobile station
|
||||
dest->writeField(wp,0x1,8); // timeslot 7
|
||||
dest->writeField(wp,0x1,8); // TIMING_ADVANCE_INDEX
|
||||
|
||||
dest->writeField(wp,0x0,1); // switch TIMING_ADVANCE_VALUE = off
|
||||
dest->writeField(wp,0x1,1); // switch TIMING_ADVANCE_INDEX = on
|
||||
dest->writeField(wp,0xC,4); // TIMING_ADVANCE_INDEX
|
||||
dest->writeField(wp,0x7,3); // TIMING_ADVANCE_TIMESLOT_NUMBER
|
||||
|
||||
dest->writeField(wp,0x0,1); // switch POWER CONTROL = off
|
||||
dest->writeField(wp,0x1,1); // Frequency Parameters information elements = present
|
||||
|
||||
dest->writeField(wp,0x2,3); // Training Sequence Code (TSC) = 2
|
||||
dest->writeField(wp,0x1,2); // Indirect encoding struct = present
|
||||
dest->writeField(wp,0x0,6); // MAIO
|
||||
dest->writeField(wp,0xE,4); // MA_Number
|
||||
dest->writeField(wp,0x8,4); // CHANGE_MARK_1 CHANGE_MARK_2
|
||||
|
||||
dest->writeField(wp,0x1,1); // switch TFI : on
|
||||
dest->writeField(wp,0x14,5);// TFI
|
||||
|
||||
dest->writeField(wp,0x1,1); // Power Control Parameters IE = present
|
||||
dest->writeField(wp,0x0,4); // ALPHA power control parameter
|
||||
dest->writeField(wp,0x0,1); // switch GAMMA_TN0 = off
|
||||
dest->writeField(wp,0x0,1); // switch GAMMA_TN1 = off
|
||||
dest->writeField(wp,0x0,1); // switch GAMMA_TN2 = off
|
||||
dest->writeField(wp,0x0,1); // switch GAMMA_TN3 = off
|
||||
dest->writeField(wp,0x0,1); // switch GAMMA_TN4 = off
|
||||
dest->writeField(wp,0x0,1); // switch GAMMA_TN5 = off
|
||||
dest->writeField(wp,0x0,1); // switch GAMMA_TN6 = off
|
||||
dest->writeField(wp,0x1,1); // switch GAMMA_TN7 = on
|
||||
dest->writeField(wp,0x0,5); // GAMMA_TN7
|
||||
|
||||
dest->writeField(wp,0x0,1); // TBF Starting TIME IE not present
|
||||
dest->writeField(wp,0x0,1); // Measurement Mapping struct not present
|
||||
} |
||||
|
||||
void writePUassignment(BitVector * dest, uint8_t TFI, uint32_t TLLI) |
||||
{ |
||||
// TODO We should use our implementation of encode RLC/MAC Control messages.
|
||||
unsigned wp = 0; |
||||
dest->writeField(wp,0x1,2); // Payload Type
|
||||
dest->writeField(wp,0x0,2); // Uplink block with TDMA framenumber
|
||||
dest->writeField(wp,0x1,1); // Suppl/Polling Bit
|
||||
dest->writeField(wp,0x1,3); // Uplink state flag
|
||||
|
||||
|
||||
dest->writeField(wp,0xa,6); // MESSAGE TYPE
|
||||
|
||||
dest->writeField(wp,0x0,2); // Page Mode
|
||||
|
||||
dest->writeField(wp,0x0,1); // switch PERSIST_LEVEL: off
|
||||
dest->writeField(wp,0x2,2); // switch TLLI : on
|
||||
dest->writeField(wp,TLLI,32); // TLLI
|
||||
|
||||
dest->writeField(wp,0x0,1); // Message escape
|
||||
dest->writeField(wp,0x0,2); // CHANNEL_CODING_COMMAND
|
||||
dest->writeField(wp,0x0,1); // TLLI_BLOCK_CHANNEL_CODING
|
||||
|
||||
dest->writeField(wp,0x1,1); // switch TIMING_ADVANCE_VALUE = on
|
||||
dest->writeField(wp,0x0,6); // TIMING_ADVANCE_VALUE
|
||||
dest->writeField(wp,0x0,1); // switch TIMING_ADVANCE_INDEX = off
|
||||
|
||||
dest->writeField(wp,0x0,1); // Frequency Parameters = off
|
||||
|
||||
dest->writeField(wp,0x1,2); // Dynamic Allocation = off
|
||||
|
||||
dest->writeField(wp,0x0,1); // Dynamic Allocation
|
||||
dest->writeField(wp,0x0,1); // P0 = off
|
||||
|
||||
dest->writeField(wp,0x1,1); // USF_GRANULARITY
|
||||
dest->writeField(wp,0x1,1); // switch TFI : on
|
||||
dest->writeField(wp,TFI,5);// TFI
|
||||
|
||||
dest->writeField(wp,0x0,1); //
|
||||
dest->writeField(wp,0x0,1); // TBF Starting Time = off
|
||||
dest->writeField(wp,0x0,1); // Timeslot Allocation
|
||||
|
||||
dest->writeField(wp,0x0,5); // USF_TN 0 - 4
|
||||
dest->writeField(wp,0x1,1); // USF_TN 5
|
||||
dest->writeField(wp,0x1,3); // USF_TN 5
|
||||
dest->writeField(wp,0x0,2); // USF_TN 6 - 7
|
||||
// dest->writeField(wp,0x0,1); // Measurement Mapping struct not present
|
||||
} |
||||
|
||||
void writeIARestOctetsDownlinkAssignment(BitVector * dest, uint8_t TFI, uint32_t TLLI) |
||||
{ |
||||
// GMS 04.08 10.5.2.37b 10.5.2.16
|
||||
unsigned wp = 0; |
||||
dest->writeField(wp, 3, 2); // "HH"
|
||||
dest->writeField(wp, 1, 2); // "01" Packet Downlink Assignment
|
||||
dest->writeField(wp,TLLI,32); // TLLI
|
||||
dest->writeField(wp,0x1,1); // switch TFI : on
|
||||
dest->writeField(wp,TFI,5); // TFI
|
||||
dest->writeField(wp,0x0,1); // RLC acknowledged mode
|
||||
dest->writeField(wp,0x0,1); // ALPHA = present
|
||||
//dest->writeField(wp,0x0,4); // ALPHA power control parameter
|
||||
dest->writeField(wp,0x0,5); // GAMMA power control parameter
|
||||
dest->writeField(wp,0x1,1); // Polling Bit
|
||||
dest->writeField(wp,0x1,1); // TA_VALID ???
|
||||
dest->writeField(wp,0x1,1); // switch TIMING_ADVANCE_INDEX = on
|
||||
dest->writeField(wp,0xC,4); // TIMING_ADVANCE_INDEX
|
||||
dest->writeField(wp,0x1,1); // TBF Starting TIME present
|
||||
dest->writeField(wp,0xffff,16); // TBF Starting TIME (we should set it in OpenBTS)
|
||||
dest->writeField(wp,0x0,1); // P0 not present
|
||||
} |
||||
|
||||
void writePUack(BitVector * dest, uint8_t TFI, uint32_t TLLI, unsigned CV, unsigned BSN) |
||||
{ |
||||
// TODO We should use our implementation of encode RLC/MAC Control messages.
|
||||
unsigned wp = 0; |
||||
dest->writeField(wp,0x1,2); // payload
|
||||
dest->writeField(wp,0x0,2); // Uplink block with TDMA framenumber
|
||||
if (CV == 0) dest->writeField(wp,0x1,1); // Suppl/Polling Bit
|
||||
else dest->writeField(wp,0x0,1); //Suppl/Polling Bit
|
||||
dest->writeField(wp,0x1,3); // Uplink state flag
|
||||
|
||||
//dest->writeField(wp,0x0,1); // Reduced block sequence number
|
||||
//dest->writeField(wp,BSN+6,5); // Radio transaction identifier
|
||||
//dest->writeField(wp,0x1,1); // Final segment
|
||||
//dest->writeField(wp,0x1,1); // Address control
|
||||
|
||||
//dest->writeField(wp,0x0,2); // Power reduction: 0
|
||||
//dest->writeField(wp,TFI,5); // Temporary flow identifier
|
||||
//dest->writeField(wp,0x1,1); // Direction
|
||||
|
||||
dest->writeField(wp,0x09,6); // MESSAGE TYPE
|
||||
dest->writeField(wp,0x0,2); // Page Mode
|
||||
|
||||
dest->writeField(wp,0x0,2); |
||||
dest->writeField(wp,TFI,5); // Uplink TFI
|
||||
dest->writeField(wp,0x0,1); |
||||
|
||||
dest->writeField(wp,0x0,2); // CS1
|
||||
if (CV == 0) dest->writeField(wp,0x1,1); // FINAL_ACK_INDICATION
|
||||
else dest->writeField(wp,0x0,1); // FINAL_ACK_INDICATION
|
||||
dest->writeField(wp,BSN+1,7); // STARTING_SEQUENCE_NUMBER
|
||||
// RECEIVE_BLOCK_BITMAP
|
||||
for (unsigned i=0; i<8; i++) { |
||||
dest->writeField(wp,0xff,8); |
||||
} |
||||
dest->writeField(wp,0x1,1); // CONTENTION_RESOLUTION_TLLI = present
|
||||
dest->writeField(wp,TLLI,8*4); |
||||
dest->writeField(wp,0x00,4); //spare
|
||||
} |
||||
|
||||
void RLCMACExtractData(uint8_t* tfi, uint32_t* tlli, RlcMacUplinkDataBlock_t * dataBlock, uint8_t* rlc_data, unsigned* dataIndex) |
||||
{ |
||||
unsigned blockDataLen = 0; |
||||
unsigned dataOctetNum = 0; |
||||
|
||||
*tfi = dataBlock->TFI; |
||||
if (dataBlock->E_1 == 0) // Extension octet follows immediately
|
||||
{ |
||||
// TODO We should implement case with several LLC PDU in one data block.
|
||||
blockDataLen = dataBlock->LENGTH_INDICATOR[0]; |
||||
} |
||||
else |
||||
{ |
||||
blockDataLen = 20; // RLC data length without 3 header octets.
|
||||
if(dataBlock->TI == 1) // TLLI field is present
|
||||
{ |
||||
*tlli = dataBlock->TLLI; |
||||
blockDataLen -= 4; // TLLI length
|
||||
if (dataBlock->PI == 1) // PFI is present if TI field indicates presence of TLLI
|
||||
{ |
||||
blockDataLen -= 1; // PFI length
|
||||
} |
||||
} |
||||
} |
||||
|
||||
for (unsigned i = *dataIndex; i < *dataIndex + blockDataLen; i++) |
||||
{ |
||||
rlc_data[i] = dataBlock->RLC_DATA[dataOctetNum]; |
||||
dataOctetNum++; |
||||
} |
||||
*dataIndex += blockDataLen; |
||||
} |
||||
|
||||
void sendUplinkAck(uint8_t tfi, uint32_t tlli, RlcMacUplinkDataBlock_t * dataBlock) |
||||
{ |
||||
BitVector packetUplinkAck(23*8); |
||||
packetUplinkAck.unhex("2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
||||
writePUack(&packetUplinkAck, tfi, tlli, dataBlock->CV, dataBlock->BSN); |
||||
COUT("RLCMAC_CONTROL_BLOCK>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"); |
||||
RlcMacDownlink_t * pUA = (RlcMacDownlink_t *)malloc(sizeof(RlcMacUplink_t)); |
||||
decode_gsm_rlcmac_downlink(&packetUplinkAck, pUA); |
||||
free(pUA); |
||||
COUT("RLCMAC_CONTROL_BLOCK_END------------------------------"); |
||||
sendToOpenBTS(&packetUplinkAck); |
||||
} |
||||
|
||||
void RLCMACDispatchDataBlock(unsigned* waitData, BitVector *vector, uint8_t* tfi, uint32_t* tlli, uint8_t* rlc_data, unsigned* dataIndex) |
||||
{ |
||||
static DataBlockDispatcherState state = WaitSequenceStart; |
||||
static unsigned prevBSN = -1; |
||||
if ((*waitData == 1)&&(state == WaitNextSequence)) |
||||
{ |
||||
state = WaitSequenceStart; |
||||
} |
||||
|
||||
COUT("RLCMAC_DATA_BLOCK<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"); |
||||
RlcMacUplinkDataBlock_t * dataBlock = (RlcMacUplinkDataBlock_t *)malloc(sizeof(RlcMacUplinkDataBlock_t)); |
||||
decode_gsm_rlcmac_uplink_data(vector, dataBlock); |
||||
COUT("RLCMAC_DATA_BLOCK_END------------------------------");
|
||||
|
||||
switch (state) { |
||||
case WaitSequenceStart:
|
||||
if (dataBlock->BSN == 0) |
||||
{ |
||||
*dataIndex = 0; |
||||
RLCMACExtractData(tfi, tlli, dataBlock, rlc_data, dataIndex); |
||||
sendUplinkAck(*tfi, *tlli, dataBlock); |
||||
state = WaitNextBlock; |
||||
prevBSN = 0; |
||||
} |
||||
break; |
||||
case WaitNextBlock: |
||||
if (prevBSN == (dataBlock->BSN - 1)) |
||||
{ |
||||
RLCMACExtractData(tfi, tlli, dataBlock, rlc_data, dataIndex); |
||||
sendUplinkAck(*tfi, *tlli, dataBlock); |
||||
if (dataBlock->CV == 0) |
||||
{ |
||||
// Recieved last Data Block in this sequence.
|
||||
sendToGSMTAP(rlc_data, *dataIndex); |
||||
state = WaitNextSequence; |
||||
prevBSN = -1; |
||||
*waitData = 0; |
||||
} |
||||
else |
||||
{ |
||||
prevBSN = dataBlock->BSN; |
||||
state = WaitNextBlock; |
||||
} |
||||
} |
||||
else |
||||
{ |
||||
// Recieved Data Block with unexpected BSN.
|
||||
// We should try to find nesessary Data Block.
|
||||
state = WaitNextBlock; |
||||
} |
||||
break; |
||||
case WaitNextSequence: |
||||
// Now we just ignore all Data Blocks and wait next Uplink TBF
|
||||
break; |
||||
} |
||||
free(dataBlock); |
||||
} |
||||
|
||||
void RLCMACDispatchControlBlock(unsigned* waitData, BitVector *vector, uint8_t* tfi, uint32_t* tlli, uint8_t* rlc_data, unsigned* dataIndex) |
||||
{ |
||||
static unsigned shutUp = 0; |
||||
COUT("RLCMAC_CONTROL_BLOCK<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"); |
||||
RlcMacUplink_t * controlBlock = (RlcMacUplink_t *)malloc(sizeof(RlcMacUplink_t)); |
||||
decode_gsm_rlcmac_uplink(vector, controlBlock); |
||||
COUT("RLCMAC_CONTROL_BLOCK_END------------------------------"); |
||||
switch (controlBlock->u.MESSAGE_TYPE) { |
||||
case MT_PACKET_CONTROL_ACK: |
||||
if (shutUp == 0) |
||||
{ |
||||
COUT("SEND IA Rest Octets Downlink Assignment>>>>>>>>>>>>>>>>>>"); |
||||
BitVector IARestOctetsDownlinkAssignment(23*8); |
||||
IARestOctetsDownlinkAssignment.unhex("2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
||||
writeIARestOctetsDownlinkAssignment(&IARestOctetsDownlinkAssignment, 20, *tlli); |
||||
sendToOpenBTS(&IARestOctetsDownlinkAssignment); |
||||
usleep(500000); |
||||
sendToSGSN(*tfi, *tlli, rlc_data, *dataIndex); |
||||
//sendToGSMTAP(rlc_data, *dataIndex);
|
||||
shutUp = 1; |
||||
} |
||||
break; |
||||
case MT_PACKET_DOWNLINK_ACK_NACK: |
||||
COUT("SEND PacketUplinkAssignment>>>>>>>>>>>>>>>>>>"); |
||||
BitVector PacketUplinkAssignment(23*8); |
||||
PacketUplinkAssignment.unhex("2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
||||
writePUassignment(&PacketUplinkAssignment, 21, *tlli); |
||||
sendToOpenBTS(&PacketUplinkAssignment); |
||||
*waitData = 1; |
||||
break; |
||||
} |
||||
free(controlBlock); |
||||
|
||||
} |
||||
|
||||
void RLCMACDispatchBlock(BitVector *vector) |
||||
{ |
||||
static uint8_t rlc_data[60]; |
||||
static uint8_t *tfi = (uint8_t *)malloc(sizeof(uint8_t)); |
||||
static uint32_t *tlli = (uint32_t *)malloc(sizeof(uint32_t)); |
||||
static unsigned *dataIndex = (unsigned *)malloc(sizeof(unsigned)); |
||||
static unsigned waitData = 1; |
||||
|
||||
unsigned readIndex = 0; |
||||
unsigned payload = vector->readField(readIndex, 2); |
||||
|
||||
switch (payload) { |
||||
case RLCMAC_DATA_BLOCK: |
||||
RLCMACDispatchDataBlock(&waitData,vector, tfi, tlli, rlc_data, dataIndex); |
||||
break; |
||||
case RLCMAC_CONTROL_BLOCK: |
||||
RLCMACDispatchControlBlock(&waitData, vector, tfi, tlli, rlc_data, dataIndex); |
||||
break; |
||||
default: |
||||
COUT("Unknown RLCMAC block payload\n"); |
||||
} |
||||
} |
||||
|
||||
void *RLCMACSocket(void *) |
||||
{ |
||||
BitVector *vector = new BitVector(23*8); |
||||
GPRSRLCMACSocket.nonblocking(); |
||||
while (1) { |
||||
char buf[MAX_UDP_LENGTH]; |
||||
int count = GPRSRLCMACSocket.read(buf, 3000); |
||||
if (count>0) { |
||||
vector->unpack((const unsigned char*)buf); |
||||
COUT("Recieve from OpenBTS (MS): " << *vector); |
||||
RLCMACDispatchBlock(vector); |
||||
} |
||||
} |
||||
} |
@ -1,49 +0,0 @@ |
||||
/*GPRSSocket.h
|
||||
* |
||||
* Copyright (C) 2011 Ivan Klyuchnikov |
||||
* |
||||
* This program is free software; you can redistribute it and/or |
||||
* modify it under the terms of the GNU General Public License |
||||
* as published by the Free Software Foundation; either version 2 |
||||
* of the License, or (at your option) any later version. |
||||
* |
||||
* This program is distributed in the hope that it will be useful, |
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
* GNU General Public License for more details. |
||||
* |
||||
* You should have received a copy of the GNU General Public License |
||||
* along with this program; if not, write to the Free Software |
||||
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
||||
*/ |
||||
|
||||
#ifndef GPRSSOCKET_H |
||||
#define GPRSSOCKET_H |
||||
|
||||
#include <BitVector.h> |
||||
#include "gsm_rlcmac.h" |
||||
|
||||
|
||||
enum DataBlockDispatcherState { |
||||
WaitSequenceStart, |
||||
WaitNextBlock, |
||||
WaitNextSequence |
||||
}; |
||||
|
||||
void sendToGSMTAP(uint8_t * data, unsigned len); |
||||
|
||||
void sendToOpenBTS(BitVector * vector); |
||||
|
||||
void writePUack(BitVector * dest, uint8_t TFI, uint32_t TLLI, unsigned CV, unsigned BSN); |
||||
|
||||
void RLCMACExtractData(uint8_t* tfi, uint32_t* tlli, RlcMacUplinkDataBlock_t * dataBlock, uint8_t* rlc_data, unsigned* dataIndex); |
||||
|
||||
void sendUplinkAck(uint8_t tfi, uint32_t tlli, RlcMacUplinkDataBlock_t * dataBlock); |
||||
|
||||
void RLCMACDispatchDataBlock(BitVector *vector, uint8_t* tfi, uint32_t* tlli, uint8_t* rlc_data, unsigned* dataIndex); |
||||
|
||||
void RLCMACDispatchBlock(BitVector *vector); |
||||
|
||||
void *RLCMACSocket(void *); |
||||
|
||||
#endif // GPRSSOCKET_H
|
@ -0,0 +1,527 @@ |
||||
/* gprs_rlcmac.cpp
|
||||
* |
||||
* Copyright (C) 2012 Ivan Klyuchnikov |
||||
* |
||||
* This program is free software; you can redistribute it and/or |
||||
* modify it under the terms of the GNU General Public License |
||||
* as published by the Free Software Foundation; either version 2 |
||||
* of the License, or (at your option) any later version. |
||||
* |
||||
* This program is distributed in the hope that it will be useful, |
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
* GNU General Public License for more details. |
||||
* |
||||
* You should have received a copy of the GNU General Public License |
||||
* along with this program; if not, write to the Free Software |
||||
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
||||
*/ |
||||
|
||||
#include <gprs_bssgp_pcu.h> |
||||
#include <pcu_l1_if.h> |
||||
#include <Threads.h> |
||||
#include <gprs_rlcmac.h> |
||||
|
||||
|
||||
LLIST_HEAD(gprs_rlcmac_tbfs); |
||||
void *rlcmac_tall_ctx; |
||||
|
||||
int tfi_alloc() |
||||
{ |
||||
struct gprs_rlcmac_tbf *tbf; |
||||
uint32_t tfi_map = 0; |
||||
uint32_t tfi_ind = 0; |
||||
uint32_t mask = 1; |
||||
uint8_t i; |
||||
|
||||
llist_for_each_entry(tbf, &gprs_rlcmac_tbfs, list) { |
||||
tfi_ind = 1 << tbf->tfi; |
||||
tfi_map = tfi_map|tfi_ind; |
||||
} |
||||
|
||||
for (i = 0; i < 32; i++) { |
||||
if(((tfi_map >> i) & mask) == 0) { |
||||
return i; |
||||
} |
||||
} |
||||
return -1; |
||||
} |
||||
|
||||
/* lookup TBF Entity (by TFI) */ |
||||
static struct gprs_rlcmac_tbf *tbf_by_tfi(uint8_t tfi) |
||||
{ |
||||
struct gprs_rlcmac_tbf *tbf; |
||||
|
||||
llist_for_each_entry(tbf, &gprs_rlcmac_tbfs, list) { |
||||
if (tbf->tfi == tfi) |
||||
return tbf; |
||||
} |
||||
return NULL; |
||||
} |
||||
|
||||
static struct gprs_rlcmac_tbf *tbf_by_tlli(uint8_t tlli) |
||||
{ |
||||
struct gprs_rlcmac_tbf *tbf; |
||||
|
||||
llist_for_each_entry(tbf, &gprs_rlcmac_tbfs, list) { |
||||
if ((tbf->tlli == tlli)&&(tbf->direction == GPRS_RLCMAC_UL_TBF)) |
||||
return tbf; |
||||
} |
||||
return NULL; |
||||
} |
||||
|
||||
struct gprs_rlcmac_tbf *tbf_alloc(uint8_t tfi) |
||||
{ |
||||
struct gprs_rlcmac_tbf *tbf; |
||||
|
||||
tbf = talloc_zero(rlcmac_tall_ctx, struct gprs_rlcmac_tbf); |
||||
if (!tbf) |
||||
return NULL; |
||||
|
||||
tbf->tfi = tfi; |
||||
|
||||
llist_add(&tbf->list, &gprs_rlcmac_tbfs); |
||||
|
||||
return tbf; |
||||
} |
||||
|
||||
static void tbf_free(struct gprs_rlcmac_tbf *tbf) |
||||
{ |
||||
llist_del(&tbf->list); |
||||
talloc_free(tbf); |
||||
} |
||||
|
||||
void write_packet_downlink_assignment(BitVector * dest, uint8_t tfi, uint32_t tlli) |
||||
{ |
||||
// TODO We should use our implementation of encode RLC/MAC Control messages.
|
||||
unsigned wp = 0; |
||||
dest->writeField(wp,0x1,2); // Payload Type
|
||||
dest->writeField(wp,0x0,2); // Uplink block with TDMA framenumber
|
||||
dest->writeField(wp,0x1,1); // Suppl/Polling Bit
|
||||
dest->writeField(wp,0x1,3); // Uplink state flag
|
||||
dest->writeField(wp,0x2,6); // MESSAGE TYPE
|
||||
dest->writeField(wp,0x0,2); // Page Mode
|
||||
|
||||
dest->writeField(wp,0x0,1); // switch PERSIST_LEVEL: off
|
||||
dest->writeField(wp,0x2,2); // switch TLLI : on
|
||||
dest->writeField(wp,tlli,32); // TLLI
|
||||
|
||||
dest->writeField(wp,0x0,1); // Message escape
|
||||
dest->writeField(wp,0x0,2); // Medium Access Method: Dynamic Allocation
|
||||
dest->writeField(wp,0x0,1); // RLC acknowledged mode
|
||||
|
||||
dest->writeField(wp,0x0,1); // the network establishes no new downlink TBF for the mobile station
|
||||
dest->writeField(wp,0x1,8); // timeslot 7
|
||||
dest->writeField(wp,0x1,8); // TIMING_ADVANCE_INDEX
|
||||
|
||||
dest->writeField(wp,0x0,1); // switch TIMING_ADVANCE_VALUE = off
|
||||
dest->writeField(wp,0x1,1); // switch TIMING_ADVANCE_INDEX = on
|
||||
dest->writeField(wp,0xC,4); // TIMING_ADVANCE_INDEX
|
||||
dest->writeField(wp,0x7,3); // TIMING_ADVANCE_TIMESLOT_NUMBER
|
||||
|
||||
dest->writeField(wp,0x0,1); // switch POWER CONTROL = off
|
||||
dest->writeField(wp,0x1,1); // Frequency Parameters information elements = present
|
||||
|
||||
dest->writeField(wp,0x2,3); // Training Sequence Code (TSC) = 2
|
||||
dest->writeField(wp,0x1,2); // Indirect encoding struct = present
|
||||
dest->writeField(wp,0x0,6); // MAIO
|
||||
dest->writeField(wp,0xE,4); // MA_Number
|
||||
dest->writeField(wp,0x8,4); // CHANGE_MARK_1 CHANGE_MARK_2
|
||||
|
||||
dest->writeField(wp,0x1,1); // switch TFI : on
|
||||
dest->writeField(wp,tfi,5);// TFI
|
||||
|
||||
dest->writeField(wp,0x1,1); // Power Control Parameters IE = present
|
||||
dest->writeField(wp,0x0,4); // ALPHA power control parameter
|
||||
dest->writeField(wp,0x0,1); // switch GAMMA_TN0 = off
|
||||
dest->writeField(wp,0x0,1); // switch GAMMA_TN1 = off
|
||||
dest->writeField(wp,0x0,1); // switch GAMMA_TN2 = off
|
||||
dest->writeField(wp,0x0,1); // switch GAMMA_TN3 = off
|
||||
dest->writeField(wp,0x0,1); // switch GAMMA_TN4 = off
|
||||
dest->writeField(wp,0x0,1); // switch GAMMA_TN5 = off
|
||||
dest->writeField(wp,0x0,1); // switch GAMMA_TN6 = off
|
||||
dest->writeField(wp,0x1,1); // switch GAMMA_TN7 = on
|
||||
dest->writeField(wp,0x0,5); // GAMMA_TN7
|
||||
|
||||
dest->writeField(wp,0x0,1); // TBF Starting TIME IE not present
|
||||
dest->writeField(wp,0x0,1); // Measurement Mapping struct not present
|
||||
} |
||||
|
||||
void write_packet_uplink_assignment(BitVector * dest, uint8_t tfi, uint32_t tlli) |
||||
{ |
||||
// TODO We should use our implementation of encode RLC/MAC Control messages.
|
||||
unsigned wp = 0; |
||||
dest->writeField(wp,0x1,2); // Payload Type
|
||||
dest->writeField(wp,0x0,2); // Uplink block with TDMA framenumber
|
||||
dest->writeField(wp,0x1,1); // Suppl/Polling Bit
|
||||
dest->writeField(wp,0x1,3); // Uplink state flag
|
||||
|
||||
|
||||
dest->writeField(wp,0xa,6); // MESSAGE TYPE
|
||||
|
||||
dest->writeField(wp,0x0,2); // Page Mode
|
||||
|
||||
dest->writeField(wp,0x0,1); // switch PERSIST_LEVEL: off
|
||||
dest->writeField(wp,0x2,2); // switch TLLI : on
|
||||
dest->writeField(wp,tlli,32); // TLLI
|
||||
|
||||
dest->writeField(wp,0x0,1); // Message escape
|
||||
dest->writeField(wp,0x0,2); // CHANNEL_CODING_COMMAND
|
||||
dest->writeField(wp,0x0,1); // TLLI_BLOCK_CHANNEL_CODING
|
||||
|
||||
dest->writeField(wp,0x1,1); // switch TIMING_ADVANCE_VALUE = on
|
||||
dest->writeField(wp,0x0,6); // TIMING_ADVANCE_VALUE
|
||||
dest->writeField(wp,0x0,1); // switch TIMING_ADVANCE_INDEX = off
|
||||
|
||||
dest->writeField(wp,0x0,1); // Frequency Parameters = off
|
||||
|
||||
dest->writeField(wp,0x1,2); // Dynamic Allocation = off
|
||||
|
||||
dest->writeField(wp,0x0,1); // Dynamic Allocation
|
||||
dest->writeField(wp,0x0,1); // P0 = off
|
||||
|
||||
dest->writeField(wp,0x1,1); // USF_GRANULARITY
|
||||
dest->writeField(wp,0x1,1); // switch TFI : on
|
||||
dest->writeField(wp,tfi,5);// TFI
|
||||
|
||||
dest->writeField(wp,0x0,1); //
|
||||
dest->writeField(wp,0x0,1); // TBF Starting Time = off
|
||||
dest->writeField(wp,0x0,1); // Timeslot Allocation
|
||||
|
||||
dest->writeField(wp,0x0,5); // USF_TN 0 - 4
|
||||
dest->writeField(wp,0x1,1); // USF_TN 5
|
||||
dest->writeField(wp,0x1,3); // USF_TN 5
|
||||
dest->writeField(wp,0x0,2); // USF_TN 6 - 7
|
||||
// dest->writeField(wp,0x0,1); // Measurement Mapping struct not present
|
||||
} |
||||
|
||||
void write_ia_rest_octets_downlink_assignment(BitVector * dest, uint8_t tfi, uint32_t tlli) |
||||
{ |
||||
// GMS 04.08 10.5.2.37b 10.5.2.16
|
||||
unsigned wp = 0; |
||||
dest->writeField(wp, 3, 2); // "HH"
|
||||
dest->writeField(wp, 1, 2); // "01" Packet Downlink Assignment
|
||||
dest->writeField(wp,tlli,32); // TLLI
|
||||
dest->writeField(wp,0x1,1); // switch TFI : on
|
||||
dest->writeField(wp,tfi,5); // TFI
|
||||
dest->writeField(wp,0x0,1); // RLC acknowledged mode
|
||||
dest->writeField(wp,0x0,1); // ALPHA = present
|
||||
//dest->writeField(wp,0x0,4); // ALPHA power control parameter
|
||||
dest->writeField(wp,0x0,5); // GAMMA power control parameter
|
||||
dest->writeField(wp,0x1,1); // Polling Bit
|
||||
dest->writeField(wp,0x1,1); // TA_VALID ???
|
||||
dest->writeField(wp,0x1,1); // switch TIMING_ADVANCE_INDEX = on
|
||||
dest->writeField(wp,0xC,4); // TIMING_ADVANCE_INDEX
|
||||
dest->writeField(wp,0x1,1); // TBF Starting TIME present
|
||||
dest->writeField(wp,0xffff,16); // TBF Starting TIME (we should set it in OpenBTS)
|
||||
dest->writeField(wp,0x0,1); // P0 not present
|
||||
} |
||||
|
||||
void write_packet_uplink_ack(BitVector * dest, uint8_t tfi, uint32_t tlli, unsigned cv, unsigned bsn) |
||||
{ |
||||
// TODO We should use our implementation of encode RLC/MAC Control messages.
|
||||
unsigned wp = 0; |
||||
dest->writeField(wp,0x1,2); // payload
|
||||
dest->writeField(wp,0x0,2); // Uplink block with TDMA framenumber
|
||||
if (cv == 0) dest->writeField(wp,0x1,1); // Suppl/Polling Bit
|
||||
else dest->writeField(wp,0x0,1); //Suppl/Polling Bit
|
||||
dest->writeField(wp,0x1,3); // Uplink state flag
|
||||
|
||||
//dest->writeField(wp,0x0,1); // Reduced block sequence number
|
||||
//dest->writeField(wp,BSN+6,5); // Radio transaction identifier
|
||||
//dest->writeField(wp,0x1,1); // Final segment
|
||||
//dest->writeField(wp,0x1,1); // Address control
|
||||
|
||||
//dest->writeField(wp,0x0,2); // Power reduction: 0
|
||||
//dest->writeField(wp,TFI,5); // Temporary flow identifier
|
||||
//dest->writeField(wp,0x1,1); // Direction
|
||||
|
||||
dest->writeField(wp,0x09,6); // MESSAGE TYPE
|
||||
dest->writeField(wp,0x0,2); // Page Mode
|
||||
|
||||
dest->writeField(wp,0x0,2); |
||||
dest->writeField(wp,tfi,5); // Uplink TFI
|
||||
dest->writeField(wp,0x0,1); |
||||
|
||||
dest->writeField(wp,0x0,2); // CS1
|
||||
if (cv == 0) dest->writeField(wp,0x1,1); // FINAL_ACK_INDICATION
|
||||
else dest->writeField(wp,0x0,1); // FINAL_ACK_INDICATION
|
||||
dest->writeField(wp,bsn + 1,7); // STARTING_SEQUENCE_NUMBER
|
||||
// RECEIVE_BLOCK_BITMAP
|
||||
for (unsigned i=0; i<8; i++) { |
||||
dest->writeField(wp,0xff,8); |
||||
} |
||||
dest->writeField(wp,0x1,1); // CONTENTION_RESOLUTION_TLLI = present
|
||||
dest->writeField(wp,tlli,8*4); |
||||
dest->writeField(wp,0x00,4); //spare
|
||||
} |
||||
|
||||
void gprs_rlcmac_tx_ul_ack(uint8_t tfi, uint32_t tlli, RlcMacUplinkDataBlock_t * ul_data_block) |
||||
{ |
||||
BitVector packet_uplink_ack_vec(23*8); |
||||
packet_uplink_ack_vec.unhex("2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
||||
write_packet_uplink_ack(&packet_uplink_ack_vec, tfi, tlli, ul_data_block->CV, ul_data_block->BSN); |
||||
COUT("RLCMAC_CONTROL_BLOCK>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>"); |
||||
RlcMacDownlink_t * packet_uplink_ack = (RlcMacDownlink_t *)malloc(sizeof(RlcMacUplink_t)); |
||||
decode_gsm_rlcmac_downlink(&packet_uplink_ack_vec, packet_uplink_ack); |
||||
free(packet_uplink_ack); |
||||
COUT("RLCMAC_CONTROL_BLOCK_END------------------------------"); |
||||
pcu_l1if_tx(&packet_uplink_ack_vec); |
||||
} |
||||
|
||||
void gprs_rlcmac_data_block_parse(gprs_rlcmac_tbf* tbf, RlcMacUplinkDataBlock_t * ul_data_block) |
||||
{ |
||||
unsigned block_data_len = 0; |
||||
unsigned data_octet_num = 0; |
||||
|
||||
if (ul_data_block->E_1 == 0) // Extension octet follows immediately
|
||||
{ |
||||
// TODO We should implement case with several LLC PDU in one data block.
|
||||
block_data_len = ul_data_block->LENGTH_INDICATOR[0]; |
||||
} |
||||
else |
||||
{ |
||||
block_data_len = 20; // RLC data length without 3 header octets.
|
||||
if(ul_data_block->TI == 1) // TLLI field is present
|
||||
{ |
||||
tbf->tlli = ul_data_block->TLLI; |
||||
block_data_len -= 4; // TLLI length
|
||||
if (ul_data_block->PI == 1) // PFI is present if TI field indicates presence of TLLI
|
||||
{ |
||||
block_data_len -= 1; // PFI length
|
||||
} |
||||
} |
||||
} |
||||
|
||||
for (unsigned i = tbf->data_index; i < tbf->data_index + block_data_len; i++) |
||||
{ |
||||
tbf->rlc_data[i] = ul_data_block->RLC_DATA[data_octet_num]; |
||||
data_octet_num++; |
||||
} |
||||
tbf->data_index += block_data_len; |
||||
} |
||||
|
||||
/* Received Uplink RLC data block. */ |
||||
int gprs_rlcmac_rcv_data_block(BitVector *rlc_block) |
||||
{ |
||||
struct gprs_rlcmac_tbf *tbf; |
||||
|
||||
COUT("RLCMAC_DATA_BLOCK<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"); |
||||
RlcMacUplinkDataBlock_t * ul_data_block = (RlcMacUplinkDataBlock_t *)malloc(sizeof(RlcMacUplinkDataBlock_t)); |
||||
decode_gsm_rlcmac_uplink_data(rlc_block, ul_data_block); |
||||
COUT("RLCMAC_DATA_BLOCK_END------------------------------"); |
||||
|
||||
tbf = tbf_by_tfi(ul_data_block->TFI); |
||||
if (!tbf) { |
||||
tbf = tbf_alloc(ul_data_block->TFI); |
||||
if (tbf) { |
||||
tbf->direction = GPRS_RLCMAC_UL_TBF; |
||||
tbf->state = GPRS_RLCMAC_WAIT_DATA_SEQ_START; |
||||
} else { |
||||
return 0; |
||||
} |
||||
} |
||||
|
||||
switch (tbf->state) { |
||||
case GPRS_RLCMAC_WAIT_DATA_SEQ_START:
|
||||
if (ul_data_block->BSN == 0) { |
||||
tbf->data_index = 0; |
||||
gprs_rlcmac_data_block_parse(tbf, ul_data_block); |
||||
gprs_rlcmac_tx_ul_ack(tbf->tfi, tbf->tlli, ul_data_block); |
||||
tbf->state = GPRS_RLCMAC_WAIT_NEXT_DATA_BLOCK; |
||||
tbf->bsn = ul_data_block->BSN; |
||||
} |
||||
break; |
||||
case GPRS_RLCMAC_WAIT_NEXT_DATA_BLOCK: |
||||
if (tbf->bsn == (ul_data_block->BSN - 1)) { |
||||
gprs_rlcmac_data_block_parse(tbf, ul_data_block); |
||||
gprs_rlcmac_tx_ul_ack(tbf->tfi, tbf->tlli, ul_data_block); |
||||
if (ul_data_block->CV == 0) { |
||||
// Recieved last Data Block in this sequence.
|
||||
gsmtap_send_llc(tbf->rlc_data, tbf->data_index); |
||||
tbf->state = GPRS_RLCMAC_WAIT_NEXT_DATA_SEQ; |
||||
} else { |
||||
tbf->bsn = ul_data_block->BSN; |
||||
tbf->state = GPRS_RLCMAC_WAIT_NEXT_DATA_BLOCK; |
||||
} |
||||
} else { |
||||
// Recieved Data Block with unexpected BSN.
|
||||
// We should try to find nesessary Data Block.
|
||||
tbf->state = GPRS_RLCMAC_WAIT_NEXT_DATA_BLOCK; |
||||
} |
||||
break; |
||||
case GPRS_RLCMAC_WAIT_NEXT_DATA_SEQ: |
||||
// Now we just ignore all Data Blocks and wait next Uplink TBF
|
||||
break; |
||||
} |
||||
|
||||
free(ul_data_block); |
||||
return 1; |
||||
} |
||||
|
||||
/* Received Uplink RLC control block. */ |
||||
int gprs_rlcmac_rcv_control_block(BitVector *rlc_block) |
||||
{ |
||||
//static unsigned shutUp = 0;
|
||||
uint8_t tfi = 0; |
||||
uint32_t tlli = 0; |
||||
struct gprs_rlcmac_tbf *tbf; |
||||
|
||||
COUT("RLCMAC_CONTROL_BLOCK<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<"); |
||||
RlcMacUplink_t * ul_control_block = (RlcMacUplink_t *)malloc(sizeof(RlcMacUplink_t)); |
||||
decode_gsm_rlcmac_uplink(rlc_block, ul_control_block); |
||||
COUT("RLCMAC_CONTROL_BLOCK_END------------------------------"); |
||||
|
||||
//gprs_rlcmac_control_block_get_tfi_tlli(ul_control_block, &tfi, &tlli);
|
||||
tbf = tbf_by_tfi(tfi); |
||||
if (!tbf) { |
||||
return 0; |
||||
} |
||||
|
||||
switch (ul_control_block->u.MESSAGE_TYPE) { |
||||
case MT_PACKET_CONTROL_ACK: |
||||
/*
|
||||
COUT("SEND IA Rest Octets Downlink Assignment>>>>>>>>>>>>>>>>>>"); |
||||
BitVector IARestOctetsDownlinkAssignment(23*8); |
||||
IARestOctetsDownlinkAssignment.unhex("2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b"); |
||||
writeIARestOctetsDownlinkAssignment(&IARestOctetsDownlinkAssignment, 20, *tlli); |
||||
sendToOpenBTS(&IARestOctetsDownlinkAssignment); |
||||
*/ |
||||
//usleep(500000);
|
||||
tlli = ul_control_block->u.Packet_Control_Acknowledgement.TLLI; |
||||
tbf = tbf_by_tlli(tlli); |
||||
if (!tbf) { |
||||
return 0; |
||||
} |
||||
gprs_rlcmac_tx_ul_ud(tbf); |
||||
tbf_free(tbf); |
||||
break; |
||||
case MT_PACKET_DOWNLINK_ACK_NACK: |
||||
tfi = ul_control_block->u.Packet_Downlink_Ack_Nack.DOWNLINK_TFI; |
||||
tbf = tbf_by_tfi(tfi); |
||||
if (!tbf) { |
||||
return 0; |
||||
} |
||||
//COUT("SEND PacketUplinkAssignment>>>>>>>>>>>>>>>>>>");
|
||||
//BitVector PacketUplinkAssignment(23*8);
|
||||
//PacketUplinkAssignment.unhex("2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b");
|
||||
//writePUassignment(&PacketUplinkAssignment, tbf->tfi, tbf->tlli);
|
||||
//sendToOpenBTS(&PacketUplinkAssignment);
|
||||
break; |
||||
} |
||||
free(ul_control_block); |
||||
return 1; |
||||
} |
||||
|
||||
void gprs_rlcmac_rcv_block(BitVector *rlc_block) |
||||
{ |
||||
unsigned readIndex = 0; |
||||
unsigned payload = rlc_block->readField(readIndex, 2); |
||||
|
||||
switch (payload) { |
||||
case GPRS_RLCMAC_DATA_BLOCK: |
||||
gprs_rlcmac_rcv_data_block(rlc_block); |
||||
break; |
||||
case GPRS_RLCMAC_CONTROL_BLOCK: |
||||
gprs_rlcmac_rcv_control_block(rlc_block); |
||||
break; |
||||
case GPRS_RLCMAC_CONTROL_BLOCK_OPT: |
||||
COUT("GPRS_RLCMAC_CONTROL_BLOCK_OPT block payload is not supported.\n"); |
||||