539 lines
17 KiB
C++
539 lines
17 KiB
C++
/* gprs_rlcmac.cpp
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*
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* Copyright (C) 2012 Ivan Klyuchnikov
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <gprs_bssgp_pcu.h>
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#include <pcu_l1_if.h>
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#include <Threads.h>
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#include <gprs_rlcmac.h>
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LLIST_HEAD(gprs_rlcmac_tbfs);
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void *rlcmac_tall_ctx;
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int tfi_alloc()
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{
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struct gprs_rlcmac_tbf *tbf;
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uint32_t tfi_map = 0;
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uint32_t tfi_ind = 0;
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uint32_t mask = 1;
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uint8_t i;
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llist_for_each_entry(tbf, &gprs_rlcmac_tbfs, list) {
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tfi_ind = 1 << tbf->tfi;
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tfi_map = tfi_map|tfi_ind;
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}
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for (i = 0; i < 32; i++) {
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if(((tfi_map >> i) & mask) == 0) {
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return i;
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}
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}
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return -1;
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}
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/* lookup TBF Entity (by TFI) */
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static struct gprs_rlcmac_tbf *tbf_by_tfi(uint8_t tfi)
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{
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struct gprs_rlcmac_tbf *tbf;
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llist_for_each_entry(tbf, &gprs_rlcmac_tbfs, list) {
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if (tbf->tfi == tfi)
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return tbf;
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}
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return NULL;
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}
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static struct gprs_rlcmac_tbf *tbf_by_tlli(uint32_t tlli)
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{
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struct gprs_rlcmac_tbf *tbf;
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llist_for_each_entry(tbf, &gprs_rlcmac_tbfs, list) {
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if ((tbf->tlli == tlli)&&(tbf->direction == GPRS_RLCMAC_UL_TBF))
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return tbf;
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}
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return NULL;
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}
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struct gprs_rlcmac_tbf *tbf_alloc(uint8_t tfi)
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{
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struct gprs_rlcmac_tbf *tbf;
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tbf = talloc_zero(rlcmac_tall_ctx, struct gprs_rlcmac_tbf);
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if (!tbf)
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return NULL;
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tbf->tfi = tfi;
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llist_add(&tbf->list, &gprs_rlcmac_tbfs);
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return tbf;
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}
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static void tbf_free(struct gprs_rlcmac_tbf *tbf)
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{
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llist_del(&tbf->list);
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talloc_free(tbf);
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}
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void write_packet_downlink_assignment(BitVector * dest, uint8_t tfi, uint32_t tlli)
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{
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// TODO We should use our implementation of encode RLC/MAC Control messages.
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unsigned wp = 0;
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dest->writeField(wp,0x1,2); // Payload Type
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dest->writeField(wp,0x0,2); // Uplink block with TDMA framenumber
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dest->writeField(wp,0x1,1); // Suppl/Polling Bit
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dest->writeField(wp,0x1,3); // Uplink state flag
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dest->writeField(wp,0x2,6); // MESSAGE TYPE
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dest->writeField(wp,0x0,2); // Page Mode
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dest->writeField(wp,0x0,1); // switch PERSIST_LEVEL: off
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dest->writeField(wp,0x2,2); // switch TLLI : on
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dest->writeField(wp,tlli,32); // TLLI
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dest->writeField(wp,0x0,1); // Message escape
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dest->writeField(wp,0x0,2); // Medium Access Method: Dynamic Allocation
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dest->writeField(wp,0x0,1); // RLC acknowledged mode
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dest->writeField(wp,0x0,1); // the network establishes no new downlink TBF for the mobile station
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dest->writeField(wp,0x1,8); // timeslot 7
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dest->writeField(wp,0x1,8); // TIMING_ADVANCE_INDEX
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dest->writeField(wp,0x0,1); // switch TIMING_ADVANCE_VALUE = off
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dest->writeField(wp,0x1,1); // switch TIMING_ADVANCE_INDEX = on
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dest->writeField(wp,0xC,4); // TIMING_ADVANCE_INDEX
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dest->writeField(wp,0x7,3); // TIMING_ADVANCE_TIMESLOT_NUMBER
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dest->writeField(wp,0x0,1); // switch POWER CONTROL = off
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dest->writeField(wp,0x1,1); // Frequency Parameters information elements = present
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dest->writeField(wp,0x2,3); // Training Sequence Code (TSC) = 2
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dest->writeField(wp,0x1,2); // Indirect encoding struct = present
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dest->writeField(wp,0x0,6); // MAIO
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dest->writeField(wp,0xE,4); // MA_Number
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dest->writeField(wp,0x8,4); // CHANGE_MARK_1 CHANGE_MARK_2
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dest->writeField(wp,0x1,1); // switch TFI : on
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dest->writeField(wp,tfi,5);// TFI
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dest->writeField(wp,0x1,1); // Power Control Parameters IE = present
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dest->writeField(wp,0x0,4); // ALPHA power control parameter
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dest->writeField(wp,0x0,1); // switch GAMMA_TN0 = off
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dest->writeField(wp,0x0,1); // switch GAMMA_TN1 = off
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dest->writeField(wp,0x0,1); // switch GAMMA_TN2 = off
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dest->writeField(wp,0x0,1); // switch GAMMA_TN3 = off
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dest->writeField(wp,0x0,1); // switch GAMMA_TN4 = off
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dest->writeField(wp,0x0,1); // switch GAMMA_TN5 = off
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dest->writeField(wp,0x0,1); // switch GAMMA_TN6 = off
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dest->writeField(wp,0x1,1); // switch GAMMA_TN7 = on
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dest->writeField(wp,0x0,5); // GAMMA_TN7
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dest->writeField(wp,0x0,1); // TBF Starting TIME IE not present
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dest->writeField(wp,0x0,1); // Measurement Mapping struct not present
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}
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void write_packet_uplink_assignment(BitVector * dest, uint8_t tfi, uint32_t tlli)
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{
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// TODO We should use our implementation of encode RLC/MAC Control messages.
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unsigned wp = 0;
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dest->writeField(wp,0x1,2); // Payload Type
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dest->writeField(wp,0x0,2); // Uplink block with TDMA framenumber
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dest->writeField(wp,0x1,1); // Suppl/Polling Bit
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dest->writeField(wp,0x1,3); // Uplink state flag
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dest->writeField(wp,0xa,6); // MESSAGE TYPE
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dest->writeField(wp,0x0,2); // Page Mode
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dest->writeField(wp,0x0,1); // switch PERSIST_LEVEL: off
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dest->writeField(wp,0x2,2); // switch TLLI : on
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dest->writeField(wp,tlli,32); // TLLI
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dest->writeField(wp,0x0,1); // Message escape
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dest->writeField(wp,0x0,2); // CHANNEL_CODING_COMMAND
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dest->writeField(wp,0x0,1); // TLLI_BLOCK_CHANNEL_CODING
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dest->writeField(wp,0x1,1); // switch TIMING_ADVANCE_VALUE = on
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dest->writeField(wp,0x0,6); // TIMING_ADVANCE_VALUE
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dest->writeField(wp,0x0,1); // switch TIMING_ADVANCE_INDEX = off
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dest->writeField(wp,0x0,1); // Frequency Parameters = off
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dest->writeField(wp,0x1,2); // Dynamic Allocation = off
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dest->writeField(wp,0x0,1); // Dynamic Allocation
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dest->writeField(wp,0x0,1); // P0 = off
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dest->writeField(wp,0x1,1); // USF_GRANULARITY
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dest->writeField(wp,0x1,1); // switch TFI : on
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dest->writeField(wp,tfi,5);// TFI
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dest->writeField(wp,0x0,1); //
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dest->writeField(wp,0x0,1); // TBF Starting Time = off
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dest->writeField(wp,0x0,1); // Timeslot Allocation
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dest->writeField(wp,0x0,5); // USF_TN 0 - 4
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dest->writeField(wp,0x1,1); // USF_TN 5
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dest->writeField(wp,0x1,3); // USF_TN 5
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dest->writeField(wp,0x0,2); // USF_TN 6 - 7
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// dest->writeField(wp,0x0,1); // Measurement Mapping struct not present
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}
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void write_ia_rest_octets_downlink_assignment(BitVector * dest, uint8_t tfi, uint32_t tlli)
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{
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// GMS 04.08 10.5.2.37b 10.5.2.16
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unsigned wp = 0;
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dest->writeField(wp, 3, 2); // "HH"
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dest->writeField(wp, 1, 2); // "01" Packet Downlink Assignment
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dest->writeField(wp,tlli,32); // TLLI
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dest->writeField(wp,0x1,1); // switch TFI : on
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dest->writeField(wp,tfi,5); // TFI
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dest->writeField(wp,0x0,1); // RLC acknowledged mode
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dest->writeField(wp,0x0,1); // ALPHA = present
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//dest->writeField(wp,0x0,4); // ALPHA power control parameter
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dest->writeField(wp,0x0,5); // GAMMA power control parameter
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dest->writeField(wp,0x1,1); // Polling Bit
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dest->writeField(wp,0x1,1); // TA_VALID ???
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dest->writeField(wp,0x1,1); // switch TIMING_ADVANCE_INDEX = on
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dest->writeField(wp,0xC,4); // TIMING_ADVANCE_INDEX
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dest->writeField(wp,0x1,1); // TBF Starting TIME present
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dest->writeField(wp,0xffff,16); // TBF Starting TIME (we should set it in OpenBTS)
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dest->writeField(wp,0x0,1); // P0 not present
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}
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void write_packet_uplink_ack(BitVector * dest, uint8_t tfi, uint32_t tlli, unsigned cv, unsigned bsn)
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{
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// TODO We should use our implementation of encode RLC/MAC Control messages.
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unsigned wp = 0;
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dest->writeField(wp,0x1,2); // payload
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dest->writeField(wp,0x0,2); // Uplink block with TDMA framenumber
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if (cv == 0) dest->writeField(wp,0x1,1); // Suppl/Polling Bit
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else dest->writeField(wp,0x0,1); //Suppl/Polling Bit
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dest->writeField(wp,0x1,3); // Uplink state flag
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//dest->writeField(wp,0x0,1); // Reduced block sequence number
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//dest->writeField(wp,BSN+6,5); // Radio transaction identifier
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//dest->writeField(wp,0x1,1); // Final segment
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//dest->writeField(wp,0x1,1); // Address control
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//dest->writeField(wp,0x0,2); // Power reduction: 0
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//dest->writeField(wp,TFI,5); // Temporary flow identifier
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//dest->writeField(wp,0x1,1); // Direction
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dest->writeField(wp,0x09,6); // MESSAGE TYPE
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dest->writeField(wp,0x0,2); // Page Mode
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dest->writeField(wp,0x0,2);
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dest->writeField(wp,tfi,5); // Uplink TFI
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dest->writeField(wp,0x0,1);
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dest->writeField(wp,0x0,2); // CS1
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if (cv == 0) dest->writeField(wp,0x1,1); // FINAL_ACK_INDICATION
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else dest->writeField(wp,0x0,1); // FINAL_ACK_INDICATION
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dest->writeField(wp,bsn + 1,7); // STARTING_SEQUENCE_NUMBER
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// RECEIVE_BLOCK_BITMAP
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for (unsigned i=0; i<8; i++) {
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dest->writeField(wp,0xff,8);
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}
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dest->writeField(wp,0x1,1); // CONTENTION_RESOLUTION_TLLI = present
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dest->writeField(wp,tlli,8*4);
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dest->writeField(wp,0x00,4); //spare
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}
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void gprs_rlcmac_tx_ul_ack(uint8_t tfi, uint32_t tlli, RlcMacUplinkDataBlock_t * ul_data_block)
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{
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BitVector packet_uplink_ack_vec(23*8);
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packet_uplink_ack_vec.unhex("2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b");
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write_packet_uplink_ack(&packet_uplink_ack_vec, tfi, tlli, ul_data_block->CV, ul_data_block->BSN);
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COUT("RLCMAC_CONTROL_BLOCK>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
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RlcMacDownlink_t * packet_uplink_ack = (RlcMacDownlink_t *)malloc(sizeof(RlcMacUplink_t));
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decode_gsm_rlcmac_downlink(&packet_uplink_ack_vec, packet_uplink_ack);
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free(packet_uplink_ack);
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COUT("RLCMAC_CONTROL_BLOCK_END------------------------------");
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pcu_l1if_tx(&packet_uplink_ack_vec);
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}
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void gprs_rlcmac_data_block_parse(gprs_rlcmac_tbf* tbf, RlcMacUplinkDataBlock_t * ul_data_block)
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{
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unsigned block_data_len = 0;
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unsigned data_octet_num = 0;
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if (ul_data_block->E_1 == 0) // Extension octet follows immediately
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{
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// TODO We should implement case with several LLC PDU in one data block.
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block_data_len = ul_data_block->LENGTH_INDICATOR[0];
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}
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else
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{
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block_data_len = 20; // RLC data length without 3 header octets.
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if(ul_data_block->TI == 1) // TLLI field is present
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{
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tbf->tlli = ul_data_block->TLLI;
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block_data_len -= 4; // TLLI length
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if (ul_data_block->PI == 1) // PFI is present if TI field indicates presence of TLLI
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{
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block_data_len -= 1; // PFI length
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}
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}
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}
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for (unsigned i = tbf->data_index; i < tbf->data_index + block_data_len; i++)
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{
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tbf->rlc_data[i] = ul_data_block->RLC_DATA[data_octet_num];
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data_octet_num++;
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}
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tbf->data_index += block_data_len;
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}
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/* Received Uplink RLC data block. */
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int gprs_rlcmac_rcv_data_block(BitVector *rlc_block)
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{
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struct gprs_rlcmac_tbf *tbf;
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COUT("RLCMAC_DATA_BLOCK<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
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RlcMacUplinkDataBlock_t * ul_data_block = (RlcMacUplinkDataBlock_t *)malloc(sizeof(RlcMacUplinkDataBlock_t));
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decode_gsm_rlcmac_uplink_data(rlc_block, ul_data_block);
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COUT("RLCMAC_DATA_BLOCK_END------------------------------");
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tbf = tbf_by_tfi(ul_data_block->TFI);
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if (!tbf) {
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tbf = tbf_alloc(ul_data_block->TFI);
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if (tbf) {
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tbf->tlli = ul_data_block->TLLI;
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tbf->direction = GPRS_RLCMAC_UL_TBF;
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tbf->state = GPRS_RLCMAC_WAIT_DATA_SEQ_START;
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} else {
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return 0;
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}
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}
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switch (tbf->state) {
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case GPRS_RLCMAC_WAIT_DATA_SEQ_START:
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if (ul_data_block->BSN == 0) {
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tbf->data_index = 0;
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gprs_rlcmac_data_block_parse(tbf, ul_data_block);
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gprs_rlcmac_tx_ul_ack(tbf->tfi, tbf->tlli, ul_data_block);
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tbf->state = GPRS_RLCMAC_WAIT_NEXT_DATA_BLOCK;
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tbf->bsn = ul_data_block->BSN;
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}
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break;
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case GPRS_RLCMAC_WAIT_NEXT_DATA_BLOCK:
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if (tbf->bsn == (ul_data_block->BSN - 1)) {
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gprs_rlcmac_data_block_parse(tbf, ul_data_block);
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gprs_rlcmac_tx_ul_ack(tbf->tfi, tbf->tlli, ul_data_block);
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if (ul_data_block->CV == 0) {
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// Recieved last Data Block in this sequence.
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gsmtap_send_llc(tbf->rlc_data, tbf->data_index);
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tbf->state = GPRS_RLCMAC_WAIT_NEXT_DATA_SEQ;
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} else {
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tbf->bsn = ul_data_block->BSN;
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tbf->state = GPRS_RLCMAC_WAIT_NEXT_DATA_BLOCK;
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}
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} else {
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// Recieved Data Block with unexpected BSN.
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// We should try to find nesessary Data Block.
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tbf->state = GPRS_RLCMAC_WAIT_NEXT_DATA_BLOCK;
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}
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break;
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case GPRS_RLCMAC_WAIT_NEXT_DATA_SEQ:
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// Now we just ignore all Data Blocks and wait next Uplink TBF
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break;
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}
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free(ul_data_block);
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return 1;
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}
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/* Received Uplink RLC control block. */
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int gprs_rlcmac_rcv_control_block(BitVector *rlc_block)
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{
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//static unsigned shutUp = 0;
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uint8_t tfi = 0;
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uint32_t tlli = 0;
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struct gprs_rlcmac_tbf *tbf;
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COUT("RLCMAC_CONTROL_BLOCK<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<");
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RlcMacUplink_t * ul_control_block = (RlcMacUplink_t *)malloc(sizeof(RlcMacUplink_t));
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decode_gsm_rlcmac_uplink(rlc_block, ul_control_block);
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COUT("RLCMAC_CONTROL_BLOCK_END------------------------------");
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//gprs_rlcmac_control_block_get_tfi_tlli(ul_control_block, &tfi, &tlli);
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//tbf = tbf_by_tfi(tfi);
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//if (!tbf) {
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// return 0;
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//}
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switch (ul_control_block->u.MESSAGE_TYPE) {
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case MT_PACKET_CONTROL_ACK:
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tlli = ul_control_block->u.Packet_Control_Acknowledgement.TLLI;
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tbf = tbf_by_tlli(tlli);
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if (!tbf) {
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return 0;
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}
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gprs_rlcmac_tx_ul_ud(tbf);
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tbf_free(tbf);
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break;
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case MT_PACKET_DOWNLINK_ACK_NACK:
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tfi = ul_control_block->u.Packet_Downlink_Ack_Nack.DOWNLINK_TFI;
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tbf = tbf_by_tfi(tfi);
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if (!tbf) {
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return 0;
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}
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COUT("SEND PacketUplinkAssignment>>>>>>>>>>>>>>>>>>");
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BitVector packet_uplink_assignment(23*8);
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packet_uplink_assignment.unhex("2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b");
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write_packet_uplink_assignment(&packet_uplink_assignment, tbf->tfi, tbf->tlli);
|
|
pcu_l1if_tx(&packet_uplink_assignment);
|
|
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");
|
|
default:
|
|
COUT("Unknown RLCMAC block payload.\n");
|
|
}
|
|
}
|
|
|
|
// Send RLC data to OpenBTS.
|
|
void gprs_rlcmac_tx_dl_data_block(uint32_t tlli, uint8_t tfi, uint8_t *pdu, int start_index, int end_index, uint8_t bsn, uint8_t fbi)
|
|
{
|
|
int spare_len = 0;
|
|
BitVector data_block_vector(BLOCK_LEN*8);
|
|
data_block_vector.unhex("2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b");
|
|
RlcMacDownlinkDataBlock_t * data_block = (RlcMacDownlinkDataBlock_t *)malloc(sizeof(RlcMacDownlinkDataBlock_t));
|
|
data_block->PAYLOAD_TYPE = 0;
|
|
data_block->RRBP = 0;
|
|
data_block->SP = 1;
|
|
data_block->USF = 1;
|
|
data_block->PR = 0;
|
|
data_block->TFI = tfi;
|
|
data_block->FBI = fbi;
|
|
data_block->BSN = bsn;
|
|
if ((end_index - start_index) < 20) {
|
|
data_block->E_1 = 0;
|
|
data_block->LENGTH_INDICATOR[0] = end_index-start_index;
|
|
data_block->M[0] = 0;
|
|
data_block->E[0] = 1;
|
|
spare_len = 19 - data_block->LENGTH_INDICATOR[0];
|
|
} else {
|
|
data_block->E_1 = 1;
|
|
}
|
|
int j = 0;
|
|
int i = 0;
|
|
for(i = start_index; i < end_index; i++) {
|
|
data_block->RLC_DATA[j] = pdu[i];
|
|
j++;
|
|
}
|
|
|
|
for(i = j; i < j + spare_len; i++) {
|
|
data_block->RLC_DATA[i] = 0x2b;
|
|
}
|
|
encode_gsm_rlcmac_downlink_data(&data_block_vector, data_block);
|
|
free(data_block);
|
|
pcu_l1if_tx(&data_block_vector);
|
|
}
|
|
|
|
int gprs_rlcmac_segment_llc_pdu(struct gprs_rlcmac_tbf *tbf)
|
|
{
|
|
int fbi = 0;
|
|
int num_blocks = 0;
|
|
int i;
|
|
|
|
if (tbf->data_index > BLOCK_DATA_LEN + 1)
|
|
{
|
|
int block_data_len = BLOCK_DATA_LEN;
|
|
num_blocks = tbf->data_index/BLOCK_DATA_LEN;
|
|
int rest_len = tbf->data_index%BLOCK_DATA_LEN;
|
|
int start_index = 0;
|
|
int end_index = 0;
|
|
if (tbf->data_index%BLOCK_DATA_LEN > 0)
|
|
{
|
|
num_blocks++;
|
|
}
|
|
for (i = 0; i < num_blocks; i++)
|
|
{
|
|
if (i == num_blocks-1)
|
|
{
|
|
if (rest_len > 0)
|
|
{
|
|
block_data_len = rest_len;
|
|
}
|
|
fbi = 1;
|
|
}
|
|
end_index = start_index + block_data_len;
|
|
gprs_rlcmac_tx_dl_data_block(tbf->tlli, tbf->tfi, tbf->rlc_data, start_index, end_index, i, fbi);
|
|
start_index += block_data_len;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
gprs_rlcmac_tx_dl_data_block(tbf->tlli, tbf->tfi, tbf->rlc_data, 0, tbf->data_index, 0, 1);
|
|
}
|
|
}
|
|
|
|
/* Send Uplink unit-data to SGSN. */
|
|
void gprs_rlcmac_tx_ul_ud(gprs_rlcmac_tbf *tbf)
|
|
{
|
|
const uint8_t qos_profile = QOS_PROFILE;
|
|
struct msgb *llc_pdu;
|
|
unsigned msg_len = NS_HDR_LEN + BSSGP_HDR_LEN + tbf->data_index;
|
|
|
|
LOGP(DBSSGP, LOGL_DEBUG, "Data len %u TLLI 0x%08x , TFI 0x%02x", tbf->data_index, tbf->tlli, tbf->tfi);
|
|
//for (unsigned i = 0; i < dataLen; i++)
|
|
// LOGP(DBSSGP, LOGL_DEBUG, " Data[%u] = %u", i, rlc_data[i]);
|
|
|
|
bctx->cell_id = CELL_ID;
|
|
bctx->nsei = NSEI;
|
|
bctx->ra_id.mnc = MNC;
|
|
bctx->ra_id.mcc = MCC;
|
|
bctx->ra_id.lac = PCU_LAC;
|
|
bctx->ra_id.rac = PCU_RAC;
|
|
bctx->bvci = BVCI;
|
|
|
|
llc_pdu = msgb_alloc_headroom(msg_len, msg_len,"llc_pdu");
|
|
msgb_tvlv_push(llc_pdu, BSSGP_IE_LLC_PDU, sizeof(uint8_t)*tbf->data_index, tbf->rlc_data);
|
|
bssgp_tx_ul_ud(bctx, tbf->tlli, &qos_profile, llc_pdu);
|
|
}
|
|
|
|
void gprs_rlcmac_downlink_assignment(gprs_rlcmac_tbf *tbf)
|
|
{
|
|
|
|
COUT("SEND IA Rest Octets Downlink Assignment>>>>>>>>>>>>>>>>>>");
|
|
BitVector ia_rest_octets_downlink_assignment(23*8);
|
|
ia_rest_octets_downlink_assignment.unhex("2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b");
|
|
write_ia_rest_octets_downlink_assignment(&ia_rest_octets_downlink_assignment, tbf->tfi, tbf->tlli);
|
|
pcu_l1if_tx(&ia_rest_octets_downlink_assignment);
|
|
|
|
usleep(500000);
|
|
gprs_rlcmac_segment_llc_pdu(tbf);
|
|
}
|