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Work on RLCMAC layer. Integration of scheduler and new packet transfer

This commit is contained in:
Andreas Eversberg 2012-06-27 15:52:04 +02:00
parent 66690dd3c6
commit 5dac2f09e1
11 changed files with 350 additions and 201 deletions
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2
src/Makefile.am
View File

@ -33,6 +33,8 @@ libgprs_la_SOURCES = \
gsm_rlcmac.cpp \
gprs_bssgp_pcu.cpp \
gprs_rlcmac.cpp \
gprs_rlcmac_data.cpp \
gprs_rlcmac_sched.cpp \
gsm_timer.cpp \
bitvector.cpp

18
src/gprs_bssgp_pcu.cpp
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@ -35,20 +35,15 @@ int gprs_bssgp_pcu_rx_dl_ud(struct msgb *msg, struct tlv_parsed *tp)
budh = (struct bssgp_ud_hdr *)msgb_bssgph(msg);
struct gprs_rlcmac_tbf *tbf;
// Create new TBF
tfi = tfi_alloc();
tfi = tfi_alloc(&trx, &ts);
if (tfi < 0) {
return tfi;
}
/* FIXME: select right TRX/TS */
if (select_pdch(&trx, &ts)) {
LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH ressource\n");
/* FIXME: send reject */
return -EBUSY;
}
tbf = tbf_alloc(tfi, trx, ts);
tbf->direction = GPRS_RLCMAC_DL_TBF;
tbf->state = GPRS_RLCMAC_WAIT_DATA_SEQ_START;
tbf->state = GPRS_RLCMAC_FLOW;
tbf->tlli = ntohl(budh->tlli);
LOGP(DRLCMAC, LOGL_NOTICE, "TBF: [DOWNLINK] START TFI: %u TLLI: 0x%08x \n", tbf->tfi, tbf->tlli);
@ -60,13 +55,13 @@ int gprs_bssgp_pcu_rx_dl_ud(struct msgb *msg, struct tlv_parsed *tp)
}
uint8_t *llc_pdu = (uint8_t *) TLVP_VAL(tp, BSSGP_IE_LLC_PDU);
tbf->data_index = TLVP_LEN(tp, BSSGP_IE_LLC_PDU);
tbf->llc_index = TLVP_LEN(tp, BSSGP_IE_LLC_PDU);
LOGP(DBSSGP, LOGL_NOTICE, "LLC PDU = ");
for (i = 0; i < tbf->data_index; i++)
for (i = 0; i < tbf->llc_index; i++)
{
tbf->rlc_data[i] = llc_pdu[i];
LOGPC(DBSSGP, LOGL_NOTICE, "%02x", tbf->rlc_data[i]);
tbf->llc_frame[i] = llc_pdu[i];
LOGPC(DBSSGP, LOGL_NOTICE, "%02x", tbf->llc_frame[i]);
}
uint16_t imsi_len = 0;
@ -86,6 +81,7 @@ int gprs_bssgp_pcu_rx_dl_ud(struct msgb *msg, struct tlv_parsed *tp)
gprs_rlcmac_packet_downlink_assignment(tbf);
return 0;
}
/* Receive a BSSGP PDU from a BSS on a PTP BVCI */
int gprs_bssgp_pcu_rx_ptp(struct msgb *msg, struct tlv_parsed *tp, struct bssgp_bvc_ctx *bctx)

4
src/gprs_bssgp_pcu.h
View File

@ -50,8 +50,8 @@ struct bssgp_bvc_ctx *btsctx_alloc(uint16_t bvci, uint16_t nsei);
#define BLOCK_LEN 23
#define CELL_ID 0
#define MNC 1
#define MCC 001
#define MNC 2
#define MCC 262
#define PCU_LAC 1
#define PCU_RAC 0

7
src/gprs_debug.cpp
View File

@ -37,10 +37,11 @@
static const struct log_info_cat default_categories[] = {
{"DCSN1", "\033[1;31m", "Concrete Syntax Notation One (CSN1)", LOGL_NOTICE, 1},
{"DL1IF", "\033[1;32m", "GPRS PCU L1 interface (L1IF)", LOGL_NOTICE, 1},
{"DRLCMAC", "\033[1;33m", "GPRS RLC/MAC layer (RLCMAC)", LOGL_NOTICE, 1},
{"DRLCMACDATA", "\033[1;36m", "GPRS RLC/MAC layer Data (RLCMAC)", LOGL_NOTICE, 1},
{"DRLCMAC", "\033[1;33m", "GPRS RLC/MAC layer (RLCMAC)", LOGL_DEBUG, 1},
{"DRLCMACDATA", "\033[1;36m", "GPRS RLC/MAC layer Data (RLCMAC)", LOGL_DEBUG, 1},
{"DRLCMACSCHED", "\033[0;36m", "GPRS RLC/MAC layer Data (RLCMAC)", LOGL_DEBUG, 1},
{"DBSSGP", "\033[1;34m", "GPRS BSS Gateway Protocol (BSSGP)", LOGL_NOTICE , 1},
{"DPCU", "\033[1;35m", "GPRS Packet Control Unit (PCU)", LOGL_NOTICE, 1}
{"DPCU", "\033[1;35m", "GPRS Packet Control Unit (PCU)", LOGL_NOTICE, 1},
};
enum {

1
src/gprs_debug.h
View File

@ -31,6 +31,7 @@ enum {
DL1IF,
DRLCMAC,
DRLCMACDATA,
DRLCMACSCHED,
DBSSGP,
DPCU,
aDebug_LastEntry

319
src/gprs_rlcmac.cpp
View File

@ -1,6 +1,7 @@
/* gprs_rlcmac.cpp
*
* Copyright (C) 2012 Ivan Klyuchnikov
* Copyright (C) 2012 Andreas Eversberg <jolly@eversberg.eu>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@ -26,28 +27,83 @@ LLIST_HEAD(gprs_rlcmac_tbfs);
void *rlcmac_tall_ctx;
LLIST_HEAD(block_queue);
int tfi_alloc()
/* FIXME: spread ressources on multiple TRX */
int tfi_alloc(uint8_t *_trx, uint8_t *_ts)
{
struct gprs_rlcmac_tbf *tbf;
uint32_t tfi_map = 0;
uint32_t tfi_ind = 0;
uint32_t mask = 1;
uint8_t i;
struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts;
struct gprs_rlcmac_pdch *pdch;
uint8_t trx, ts, tfi;
llist_for_each_entry(tbf, &gprs_rlcmac_tbfs, list) {
tfi_ind = 1 << tbf->tfi;
tfi_map = tfi_map|tfi_ind;
for (trx = 0; trx < 8; trx++) {
for (ts = 0; ts < 8; ts++) {
pdch = &bts->trx[trx].pdch[ts];
if (!pdch->enable)
continue;
break;
}
if (ts < 8)
break;
}
if (trx == 8) {
LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH available.\n");
return -EINVAL;
}
LOGP(DRLCMAC, LOGL_DEBUG, "Searching for first unallocated TFI: "
"TRX=%d TS=%d\n", trx, ts);
for (tfi = 0; tfi < 32; tfi++) {
if (!pdch->tbf[tfi])
break;
}
for (i = 0; i < 32; i++) {
if(((tfi_map >> i) & mask) == 0) {
return i;
if (tfi < 32) {
LOGP(DRLCMAC, LOGL_DEBUG, " Found TFI=%d.\n", tfi);
*_trx = trx;
*_ts = ts;
return tfi;
}
LOGP(DRLCMAC, LOGL_NOTICE, "No TFI available.\n");
return -1;
}
int find_free_usf(uint8_t trx, uint8_t ts)
{
struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts;
struct gprs_rlcmac_pdch *pdch;
struct gprs_rlcmac_tbf *tbf;
uint8_t usf_map = 0;
uint8_t tfi, usf;
if (trx >= 8 || ts >= 8)
return -EINVAL;
pdch = &bts->trx[trx].pdch[ts];
/* make map of used USF */
for (tfi = 0; tfi < 32; tfi++) {
tbf = pdch->tbf[tfi];
if (!tbf)
continue;
if (tbf->direction != GPRS_RLCMAC_UL_TBF)
continue;
usf_map |= (1 << tbf->dir.ul.usf);
}
/* look for USF, don't use USF=7 */
for (usf = 0; usf < 7; usf++) {
if (!(usf_map & (1 << usf))) {
LOGP(DRLCMAC, LOGL_DEBUG, " Found USF=%d.\n", usf);
return usf;
}
}
LOGP(DRLCMAC, LOGL_NOTICE, "No USF available.\n");
return -1;
}
/* lookup TBF Entity (by TFI) */
#warning FIXME: use pdch instance by trx and ts, because tfi is local
struct gprs_rlcmac_tbf *tbf_by_tfi(uint8_t tfi)
{
struct gprs_rlcmac_tbf *tbf;
@ -71,8 +127,17 @@ struct gprs_rlcmac_tbf *tbf_by_tlli(uint32_t tlli)
struct gprs_rlcmac_tbf *tbf_alloc(uint8_t tfi, uint8_t trx, uint8_t ts)
{
struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts;
struct gprs_rlcmac_pdch *pdch;
struct gprs_rlcmac_tbf *tbf;
LOGP(DRLCMAC, LOGL_INFO, "********** TBF starts here **********\n");
LOGP(DRLCMAC, LOGL_INFO, "Allocating TBF with TFI=%d.\n", tfi);
if (trx >= 8 || ts >= 8 || tfi >= 32)
return NULL;
pdch = &bts->trx[trx].pdch[ts];
tbf = talloc_zero(rlcmac_tall_ctx, struct gprs_rlcmac_tbf);
if (!tbf)
return NULL;
@ -80,15 +145,26 @@ struct gprs_rlcmac_tbf *tbf_alloc(uint8_t tfi, uint8_t trx, uint8_t ts)
tbf->tfi = tfi;
tbf->trx = trx;
tbf->ts = ts;
tbf->arfcn = pcu_l1if_bts.trx[trx].arfcn;
tbf->tsc = pcu_l1if_bts.trx[trx].ts[ts].tsc;
tbf->arfcn = bts->trx[trx].arfcn;
tbf->tsc = bts->trx[trx].pdch[ts].tsc;
tbf->ws = 64;
tbf->sns = 128;
llist_add(&tbf->list, &gprs_rlcmac_tbfs);
pdch->tbf[tfi] = tbf;
return tbf;
}
void tbf_free(struct gprs_rlcmac_tbf *tbf)
{
struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts;
struct gprs_rlcmac_pdch *pdch;
LOGP(DRLCMAC, LOGL_INFO, "Free TBF with TFI=%d.\n", tbf->tfi);
LOGP(DRLCMAC, LOGL_INFO, "********** TBF ends here **********\n");
tbf_timer_stop(tbf);
pdch = &bts->trx[tbf->trx].pdch[tbf->ts];
pdch->tbf[tbf->tfi] = NULL;
llist_del(&tbf->list);
talloc_free(tbf);
}
@ -98,33 +174,65 @@ static void tbf_timer_cb(void *_tbf)
{
struct gprs_rlcmac_tbf *tbf = (struct gprs_rlcmac_tbf *)_tbf;
LOGP(DRLCMAC, LOGL_DEBUG, "TBF timer %u expired.\n", tbf->T);
tbf->num_T_exp++;
switch (tbf->T) {
case 1111:
// TODO: We should add timers for TBF.
case 3169:
LOGP(DRLCMAC, LOGL_DEBUG, "TBF will be freed due to timeout\n");
/* free TBF */
tbf_free(tbf);
break;
case 3103:
if (++tbf->dir.ul.n3103 == N3103_MAX) {
LOGP(DRLCMAC, LOGL_DEBUG, "Final ACK will be resent "
"due to timeout\n");
/* timeout for polling with final ack message, */
/* trigger sending at next RTS */
tbf->dir.ul.substate = GPRS_RLCMAC_UL_SEND_ACK;
} else {
LOGP(DRLCMAC, LOGL_DEBUG, "Too many timeouts on final "
"ACK, starting T3169\n");
/* restart T3169, so we can be sure that after expiry,
* the mobile has timed out and wiil not transmit
* anymore */
tbf->state = GPRS_RLCMAC_RELEASING;
tbf_timer_start(tbf, 3169, T3169);
}
break;
default:
LOGP(DRLCMAC, LOGL_NOTICE, "Timer expired in unknown mode: %u \n", tbf->T);
LOGP(DRLCMAC, LOGL_ERROR, "Timer expired in unknown mode: %u\n",
tbf->T);
}
}
static void tbf_timer_start(struct gprs_rlcmac_tbf *tbf, unsigned int T,
void tbf_timer_start(struct gprs_rlcmac_tbf *tbf, unsigned int T,
unsigned int seconds)
{
if (osmo_timer_pending(&tbf->timer))
LOGP(DRLCMAC, LOGL_NOTICE, "Starting TBF timer %u while old timer %u pending \n", T, tbf->T);
if (!osmo_timer_pending(&tbf->timer))
LOGP(DRLCMAC, LOGL_DEBUG, "Starting TBF timer %u.\n", T);
else
LOGP(DRLCMAC, LOGL_DEBUG, "Restarting TBF timer %u while old "
"timer %u pending \n", T, tbf->T);
tbf->T = T;
tbf->num_T_exp = 0;
/* FIXME: we should do this only once ? */
/* Tunning timers can be safely re-scheduled. */
tbf->timer.data = tbf;
tbf->timer.cb = &tbf_timer_cb;
osmo_timer_schedule(&tbf->timer, seconds, 0);
}
void tbf_timer_stop(struct gprs_rlcmac_tbf *tbf)
{
if (osmo_timer_pending(&tbf->timer)) {
LOGP(DRLCMAC, LOGL_DEBUG, "Stopping TBF timer %u.\n", tbf->T);
osmo_timer_del(&tbf->timer);
}
}
static void tbf_gsm_timer_cb(void *_tbf)
{
@ -159,7 +267,7 @@ static void tbf_gsm_timer_start(struct gprs_rlcmac_tbf *tbf, unsigned int fT,
osmo_gsm_timer_schedule(&tbf->gsm_timer, frames);
}
static void gprs_rlcmac_enqueue_block(bitvec *block, int len)
void gprs_rlcmac_enqueue_block(bitvec *block, int len)
{
struct msgb *msg = msgb_alloc(len, "rlcmac_dl");
bitvec_pack(block, msgb_put(msg, len));
@ -266,7 +374,7 @@ void write_packet_uplink_assignment(bitvec * dest, uint8_t tfi, uint32_t tlli)
// GSM 04.08 9.1.18 Immediate assignment
int write_immediate_assignment(bitvec * dest, uint8_t downlink, uint8_t ra, uint32_t fn,
uint8_t ta, uint16_t arfcn, uint8_t ts, uint8_t tsc, uint8_t tfi = 0, uint32_t tlli = 0)
uint8_t ta, uint16_t arfcn, uint8_t ts, uint8_t tsc, uint8_t tfi = 0, uint8_t usf = 0, uint32_t tlli = 0)
{
unsigned wp = 0;
@ -332,7 +440,7 @@ int write_immediate_assignment(bitvec * dest, uint8_t downlink, uint8_t ra, uint
bitvec_write_field(dest, wp, tfi, 5); // TFI_ASSIGNMENT Temporary Flow Identity
bitvec_write_field(dest, wp, 0, 1); // POLLING
bitvec_write_field(dest, wp, 0, 1); // ALLOCATION_TYPE: dynamic
bitvec_write_field(dest, wp, 1, 3); // USF
bitvec_write_field(dest, wp, usf, 3); // USF
bitvec_write_field(dest, wp, 0, 1); // USF_GRANULARITY
bitvec_write_field(dest, wp, 0 , 1); // "0" power control: Not Present
bitvec_write_field(dest, wp, 0, 2); // CHANNEL_CODING_COMMAND
@ -373,46 +481,7 @@ void write_ia_rest_octets_downlink_assignment(bitvec * dest, uint8_t tfi, uint32
bitvec_write_field(dest, wp,0xb,4);
}
void write_packet_uplink_ack(bitvec * 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;
bitvec_write_field(dest, wp,0x1,2); // payload
bitvec_write_field(dest, wp,0x0,2); // Uplink block with TDMA framenumber
if (cv == 0) bitvec_write_field(dest, wp,0x1,1); // Suppl/Polling Bit
else bitvec_write_field(dest, wp,0x0,1); //Suppl/Polling Bit
bitvec_write_field(dest, wp,0x1,3); // Uplink state flag
//bitvec_write_field(dest, wp,0x0,1); // Reduced block sequence number
//bitvec_write_field(dest, wp,BSN+6,5); // Radio transaction identifier
//bitvec_write_field(dest, wp,0x1,1); // Final segment
//bitvec_write_field(dest, wp,0x1,1); // Address control
//bitvec_write_field(dest, wp,0x0,2); // Power reduction: 0
//bitvec_write_field(dest, wp,TFI,5); // Temporary flow identifier
//bitvec_write_field(dest, wp,0x1,1); // Direction
bitvec_write_field(dest, wp,0x09,6); // MESSAGE TYPE
bitvec_write_field(dest, wp,0x0,2); // Page Mode
bitvec_write_field(dest, wp,0x0,2);
bitvec_write_field(dest, wp,tfi,5); // Uplink TFI
bitvec_write_field(dest, wp,0x0,1);
bitvec_write_field(dest, wp,0x0,2); // CS1
if (cv == 0) bitvec_write_field(dest, wp,0x1,1); // FINAL_ACK_INDICATION
else bitvec_write_field(dest, wp,0x0,1); // FINAL_ACK_INDICATION
bitvec_write_field(dest, wp,bsn + 1,7); // STARTING_SEQUENCE_NUMBER
// RECEIVE_BLOCK_BITMAP
for (unsigned i=0; i<8; i++) {
bitvec_write_field(dest, wp,0xff,8);
}
bitvec_write_field(dest, wp,0x1,1); // CONTENTION_RESOLUTION_TLLI = present
bitvec_write_field(dest, wp,tlli,8*4);
bitvec_write_field(dest, wp,0x00,4); //spare
bitvec_write_field(dest, wp,0x5,4); //0101
}
#if 0
void gprs_rlcmac_tx_ul_ack(uint8_t tfi, uint32_t tlli, RlcMacUplinkDataBlock_t * ul_data_block)
{
bitvec *packet_uplink_ack_vec = bitvec_alloc(23);
@ -496,12 +565,12 @@ void gprs_rlcmac_data_block_parse(gprs_rlcmac_tbf* tbf, RlcMacUplinkDataBlock_t
llc_pdu_len = UL_RLC_DATA_BLOCK_LEN - data_block_hdr_len;
}
for (unsigned i = tbf->data_index; i < tbf->data_index + llc_pdu_len; i++)
for (unsigned i = tbf->llc_index; i < tbf->llc_index + llc_pdu_len; i++)
{
tbf->rlc_data[i] = ul_data_block->RLC_DATA[data_octet_num];
tbf->llc_frame[i] = ul_data_block->RLC_DATA[data_octet_num];
data_octet_num++;
}
tbf->data_index += llc_pdu_len;
tbf->llc_index += llc_pdu_len;
if (ul_data_block->E_1 == 0) // Extension octet follows immediately
{
@ -509,17 +578,17 @@ void gprs_rlcmac_data_block_parse(gprs_rlcmac_tbf* tbf, RlcMacUplinkDataBlock_t
if (ul_data_block->M[num] == 1)
{
gprs_rlcmac_tx_ul_ud(tbf);
tbf->data_index = 0;
tbf->llc_index = 0;
// New LLC PDU continues until the end of the RLC information field, no more extension octets.
if ((ul_data_block->E[num] == 1))
{
llc_pdu_len = UL_RLC_DATA_BLOCK_LEN - data_block_hdr_len - data_octet_num;
for (unsigned i = tbf->data_index; i < tbf->data_index + llc_pdu_len; i++)
for (unsigned i = tbf->llc_index; i < tbf->llc_index + llc_pdu_len; i++)
{
tbf->rlc_data[i] = ul_data_block->RLC_DATA[data_octet_num];
tbf->llc_frame[i] = ul_data_block->RLC_DATA[data_octet_num];
data_octet_num++;
}
tbf->data_index += llc_pdu_len;
tbf->llc_index += llc_pdu_len;
num++;
}
}
@ -550,7 +619,7 @@ int gprs_rlcmac_rcv_data_block(bitvec *rlc_block)
switch (tbf->state) {
case GPRS_RLCMAC_WAIT_DATA_SEQ_START:
if (ul_data_block->BSN == 0) {
tbf->data_index = 0;
tbf->llc_index = 0;
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) {
@ -589,9 +658,10 @@ int gprs_rlcmac_rcv_data_block(bitvec *rlc_block)
free(ul_data_block);
return 1;
}
#endif
/* Received Uplink RLC control block. */
int gprs_rlcmac_rcv_control_block(bitvec *rlc_block)
int gprs_rlcmac_rcv_control_block(bitvec *rlc_block, uint32_t fn)
{
uint8_t tfi = 0;
uint32_t tlli = 0;
@ -608,8 +678,17 @@ int gprs_rlcmac_rcv_control_block(bitvec *rlc_block)
tlli = ul_control_block->u.Packet_Control_Acknowledgement.TLLI;
tbf = tbf_by_tlli(tlli);
if (!tbf) {
LOGP(DRLCMAC, LOGL_NOTICE, "PACKET CONTROL ACK with "
"unknown TLLI=0x%x\n", tlli);
return 0;
}
if (tbf->poll_fn != fn) {
LOGP(DRLCMAC, LOGL_NOTICE, "PACKET CONTROL ACK for "
"TFI=%d received at FN=%d, but was requested "
"for FN=%d\n", tbf->tfi, fn, tbf->poll_fn);
} else {
LOGP(DRLCMAC, LOGL_NOTICE, "PACKET CONTROL ACK received on FN=%d as expected\n", fn);
}
LOGP(DRLCMAC, LOGL_NOTICE, "RX: [PCU <- BTS] TFI: %u TLLI: 0x%08x Packet Control Ack\n", tbf->tfi, tbf->tlli);
LOGP(DRLCMAC, LOGL_NOTICE, "TBF: [UPLINK] END TFI: %u TLLI: 0x%08x \n", tbf->tfi, tbf->tlli);
tbf_free(tbf);
@ -630,59 +709,43 @@ int gprs_rlcmac_rcv_control_block(bitvec *rlc_block)
return 1;
}
void gprs_rlcmac_rcv_block(bitvec *rlc_block)
int gprs_rlcmac_rcv_block(uint8_t *data, uint8_t len, uint32_t fn)
{
unsigned readIndex = 0;
unsigned payload = bitvec_read_field(rlc_block, readIndex, 2);
unsigned payload = data[0] >> 6;
bitvec *block;
int rc = 0;
switch (payload) {
case GPRS_RLCMAC_DATA_BLOCK:
gprs_rlcmac_rcv_data_block(rlc_block);
rc = gprs_rlcmac_rcv_data_block_acknowledged(data, len);
break;
case GPRS_RLCMAC_CONTROL_BLOCK:
gprs_rlcmac_rcv_control_block(rlc_block);
block = bitvec_alloc(len);
if (!block)
return -ENOMEM;
bitvec_unpack(block, data);
rc = gprs_rlcmac_rcv_control_block(block, fn);
bitvec_free(block);
break;
case GPRS_RLCMAC_CONTROL_BLOCK_OPT:
LOGP(DRLCMAC, LOGL_NOTICE, "GPRS_RLCMAC_CONTROL_BLOCK_OPT block payload is not supported.\n");
default:
LOGP(DRLCMAC, LOGL_NOTICE, "Unknown RLCMAC block payload.\n");
rc = -EINVAL;
}
return rc;
}
struct msgb *gen_dummy_msg(uint8_t usf)
{
struct msgb *msg = msgb_alloc(23, "rlcmac_dl_idle");
// RLC/MAC filler with USF=1
bitvec *filler = bitvec_alloc(23);
#warning HACK
if (usf == 1)
bitvec_unhex(filler, "41942b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b");
else
bitvec_unhex(filler, "42942b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b");
bitvec_pack(filler, msgb_put(msg, 23));
bitvec_free(filler);
return msg;
}
void gprs_rlcmac_rcv_rts_block(uint8_t trx, uint8_t ts, uint16_t arfcn,
uint32_t fn, uint8_t block_nr)
{
struct msgb *msg;
set_current_fn(fn);
msg = msgb_dequeue(&block_queue);
if (!msg)
msg = gen_dummy_msg(block_nr ? 2 : 1);
pcu_l1if_tx_pdtch(msg, trx, ts, arfcn, fn, block_nr);
}
#if 0
int select_pdch(uint8_t *_trx, uint8_t *_ts)
{
struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts;
uint8_t trx, ts;
for (trx = 0; trx < 8; trx++) {
for (ts = 0; ts < 8; ts++) {
if (pcu_l1if_bts.trx[trx].ts[ts].enable) {
if (bts->trx[trx].pdch[ts].enable) {
*_trx = trx;
*_ts = ts;
return 0;
@ -692,21 +755,26 @@ int select_pdch(uint8_t *_trx, uint8_t *_ts)
return -EBUSY;
}
#endif
int gprs_rlcmac_rcv_rach(uint8_t ra, uint32_t Fn, int16_t qta)
{
struct gprs_rlcmac_tbf *tbf;
uint8_t trx, ts;
int tfi, usf; /* must be signed */
if (select_pdch(&trx, &ts)) {
// Create new TBF
tfi = tfi_alloc(&trx, &ts);
if (tfi < 0) {
LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH ressource\n");
/* FIXME: send reject */
return -EBUSY;
}
// Create new TBF
int tfi = tfi_alloc();
if (tfi < 0) {
return tfi;
usf = find_free_usf(trx, ts);
if (usf < 0) {
LOGP(DRLCMAC, LOGL_NOTICE, "No PDCH ressource for USF\n");
/* FIXME: send reject */
return -EBUSY;
}
tbf = tbf_alloc(tfi, trx, ts);
if (qta < 0)
@ -715,13 +783,15 @@ int gprs_rlcmac_rcv_rach(uint8_t ra, uint32_t Fn, int16_t qta)
qta = 252;
tbf->ta = qta >> 2;
tbf->direction = GPRS_RLCMAC_UL_TBF;
tbf->state = GPRS_RLCMAC_WAIT_DATA_SEQ_START;
tbf->dir.ul.usf = usf;
tbf->state = GPRS_RLCMAC_FLOW;
tbf_timer_start(tbf, 3169, T3169);
LOGP(DRLCMAC, LOGL_NOTICE, "TBF: [UPLINK] START TFI: %u\n", tbf->tfi);
LOGP(DRLCMAC, LOGL_NOTICE, "RX: [PCU <- BTS] TFI: %u RACH qbit-ta=%d ra=%d, Fn=%d (%d,%d,%d)\n", tbf->tfi, qta, ra, Fn, (Fn / (26 * 51)) % 32, Fn % 51, Fn % 26);
LOGP(DRLCMAC, LOGL_NOTICE, "TX: [PCU -> BTS] TFI: %u Packet Immidiate Assignment\n", tbf->tfi);
bitvec *immediate_assignment = bitvec_alloc(23);
bitvec_unhex(immediate_assignment, "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b");
int len = write_immediate_assignment(immediate_assignment, 0, ra, Fn, tbf->ta, tbf->arfcn, tbf->ts, tbf->tsc, tbf->tfi);
int len = write_immediate_assignment(immediate_assignment, 0, ra, Fn, tbf->ta, tbf->arfcn, tbf->ts, tbf->tsc, tbf->tfi, usf);
pcu_l1if_tx_agch(immediate_assignment, len);
bitvec_free(immediate_assignment);
@ -803,10 +873,10 @@ int gprs_rlcmac_segment_llc_pdu(struct gprs_rlcmac_tbf *tbf)
// LLC PDU fits into one RLC data block with optional LI field.
if (tbf->data_index < BLOCK_LEN - 4)
if (tbf->llc_index < BLOCK_LEN - 4)
{
fbi = 1;
gprs_rlcmac_tx_dl_data_block(tbf->tlli, tbf->tfi, tbf->rlc_data, 0, tbf->data_index, bsn, fbi);
gprs_rlcmac_tx_dl_data_block(tbf->tlli, tbf->tfi, tbf->llc_frame, 0, tbf->llc_index, bsn, fbi);
}
// Necessary several RLC data blocks for transmit LLC PDU.
else
@ -815,10 +885,10 @@ int gprs_rlcmac_segment_llc_pdu(struct gprs_rlcmac_tbf *tbf)
int block_data_len = BLOCK_LEN - 3;
// number of blocks with 20 octets length RLC data field
num_blocks = tbf->data_index/block_data_len;
num_blocks = tbf->llc_index/block_data_len;
// rest of LLC PDU, which doesn't fit into data blocks with 20 octets RLC data field
int rest_len = tbf->data_index%BLOCK_DATA_LEN;
int rest_len = tbf->llc_index%BLOCK_DATA_LEN;
if (rest_len > 0)
{
// add one block for transmission rest of LLC PDU
@ -840,7 +910,7 @@ int gprs_rlcmac_segment_llc_pdu(struct gprs_rlcmac_tbf *tbf)
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, bsn, fbi);
gprs_rlcmac_tx_dl_data_block(tbf->tlli, tbf->tfi, tbf->llc_frame, start_index, end_index, bsn, fbi);
start_index += block_data_len;
}
}
@ -853,12 +923,12 @@ 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;
unsigned msg_len = NS_HDR_LEN + BSSGP_HDR_LEN + tbf->llc_index;
LOGP(DBSSGP, LOGL_NOTICE, "TX: [PCU -> SGSN ] TFI: %u TLLI: 0x%08x DataLen: %u", tbf->tfi, tbf->tlli, tbf->data_index);
LOGP(DBSSGP, LOGL_NOTICE, "TX: [PCU -> SGSN ] TFI: %u TLLI: 0x%08x DataLen: %u", tbf->tfi, tbf->tlli, tbf->llc_index);
//LOGP(DBSSGP, LOGL_NOTICE, " Data = ");
//for (unsigned i = 0; i < tbf->data_index; i++)
// LOGPC(DBSSGP, LOGL_NOTICE, "%02x ", tbf->rlc_data[i]);
//for (unsigned i = 0; i < tbf->llc_index; i++)
// LOGPC(DBSSGP, LOGL_NOTICE, "%02x ", tbf->llc_frame[i]);
bctx->cell_id = CELL_ID;
bctx->nsei = NSEI;
@ -869,7 +939,7 @@ void gprs_rlcmac_tx_ul_ud(gprs_rlcmac_tbf *tbf)
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);
msgb_tvlv_push(llc_pdu, BSSGP_IE_LLC_PDU, sizeof(uint8_t)*tbf->llc_index, tbf->llc_frame);
bssgp_tx_ul_ud(bctx, tbf->tlli, &qos_profile, llc_pdu);
}
@ -878,7 +948,7 @@ void gprs_rlcmac_downlink_assignment(gprs_rlcmac_tbf *tbf)
LOGP(DRLCMAC, LOGL_NOTICE, "TX: [PCU -> BTS] TFI: %u TLLI: 0x%08x Immidiate Assignment (CCCH)\n", tbf->tfi, tbf->tlli);
bitvec *immediate_assignment = bitvec_alloc(23);
bitvec_unhex(immediate_assignment, "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b");
int len = write_immediate_assignment(immediate_assignment, 1, 125, get_current_fn(), tbf->ta, tbf->arfcn, tbf->ts, tbf->tsc, tbf->tfi, tbf->tlli);
int len = write_immediate_assignment(immediate_assignment, 1, 125, get_current_fn(), tbf->ta, tbf->arfcn, tbf->ts, tbf->tsc, tbf->tfi, 0, tbf->tlli);
pcu_l1if_tx_agch(immediate_assignment, len);
bitvec_free(immediate_assignment);
tbf_gsm_timer_start(tbf, 0, 120);
@ -889,7 +959,6 @@ void gprs_rlcmac_packet_downlink_assignment(gprs_rlcmac_tbf *tbf)
LOGP(DRLCMAC, LOGL_NOTICE, "TX: [PCU -> BTS] TFI: %u TLLI: 0x%08x Packet DL Assignment\n", tbf->tfi, tbf->tlli);
bitvec *packet_downlink_assignment_vec = bitvec_alloc(23);
bitvec_unhex(packet_downlink_assignment_vec, "2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b2b");
printf("tbf->ts %d\n", tbf->ts);
write_packet_downlink_assignment(packet_downlink_assignment_vec, tbf->tfi, tbf->tlli, tbf->arfcn, tbf->ts, tbf->ta, tbf->tsc);
RlcMacDownlink_t * packet_downlink_assignment = (RlcMacDownlink_t *)malloc(sizeof(RlcMacDownlink_t));
LOGP(DRLCMAC, LOGL_NOTICE, "+++++++++++++++++++++++++ TX : Packet Downlink Assignment +++++++++++++++++++++++++\n");

103
src/gprs_rlcmac.h
View File

@ -29,13 +29,60 @@ extern "C" {
#include <osmocom/core/timer.h>
}
/*
* PDCH instanc
*/
struct gprs_rlcmac_tbf;
struct gprs_rlcmac_pdch {
uint8_t enable; /* TS is enabled */
uint8_t tsc; /* TSC of this slot */
uint8_t next_ul_tfi; /* next uplink TBF/TFI to schedule (0..31) */
uint8_t next_dl_tfi; /* next downlink TBF/TFI to schedule (0..31) */
struct gprs_rlcmac_tbf *tbf[32]; /* array of TBF pointers, by TFI */
};
struct gprs_rlcmac_trx {
uint16_t arfcn;
struct gprs_rlcmac_pdch pdch[8];
};
struct gprs_rlcmac_bts {
struct gprs_rlcmac_trx trx[8];
};
extern struct gprs_rlcmac_bts *gprs_rlcmac_bts;
/*
* TBF instance
*/
#define LLC_MAX_LEN 1543
#define RLC_MAX_SNS 128 /* GPRS, must be power of 2 */
#define RLC_MAX_WS 64 /* max window size */
#define RLC_MAX_LEN 52 /* CS-4 */
#define UL_RLC_DATA_BLOCK_LEN 23
#define T3169 6 /* 5 seconds + one second, because we don't use
* counters before starting timer. */
#define N3103_MAX 4 /* how many tries to poll PACKET CONTROL ACK */
enum gprs_rlcmac_tbf_state {
GPRS_RLCMAC_WAIT_DATA_SEQ_START,
GPRS_RLCMAC_WAIT_NEXT_DATA_BLOCK,
GPRS_RLCMAC_WAIT_NEXT_DATA_SEQ
GPRS_RLCMAC_FLOW, /* RLC/MAC flow, ressource needed */
GPRS_RLCMAC_FINISHED, /* flow finished, wait for release */
GPRS_RLCMAC_RELEASING, /* releasing, wait to free TBI/USF */
};
enum gprs_rlcmac_tbf_poll_state {
GPRS_RLCMAC_POLL_NONE = 0,
GPRS_RLCMAC_POLL_SCHED, /* a polling was scheduled */
};
enum gprs_rlcmac_tbf_ul_substate {
GPRS_RLCMAC_UL_NONE = 0,
GPRS_RLCMAC_UL_SEND_ACK, /* send acknowledge on next RTS */
GPRS_RLCMAC_UL_WAIT_POLL, /* wait for PACKET CONTROL ACK */
};
enum gprs_rlcmac_tbf_direction {
@ -49,11 +96,36 @@ struct gprs_rlcmac_tbf {
enum gprs_rlcmac_tbf_direction direction;
uint8_t tfi;
uint32_t tlli;
uint8_t rlc_data[LLC_MAX_LEN];
uint16_t data_index;
uint8_t bsn;
uint8_t tlli_valid;
uint8_t trx, ts, tsc;
uint16_t arfcn, ta;
uint8_t llc_frame[LLC_MAX_LEN];
uint16_t llc_index;
enum gprs_rlcmac_tbf_poll_state poll_state;
uint32_t poll_fn;
uint16_t bsn; /* block sequence number */
uint16_t ws; /* window size */
uint16_t sns; /* sequence number space */
union {
struct {
uint16_t v_s; /* send state */
uint16_t v_a; /* ack state */
char v_b[RLC_MAX_SNS/2]; /* acknowledge state array */
} dl;
struct {
uint16_t v_r; /* receive state */
uint16_t v_q; /* receive window state */
char v_n[RLC_MAX_SNS/2]; /* receive state array */
int32_t rx_counter; /* count all received blocks */
enum gprs_rlcmac_tbf_ul_substate substate;
uint8_t usf; /* USF */
uint8_t n3103; /* N3103 counter */
} ul;
} dir;
uint8_t rlc_block[RLC_MAX_SNS/2][RLC_MAX_LEN]; /* block history */
uint8_t rlc_block_len[RLC_MAX_SNS/2]; /* block len of history */
struct osmo_timer_list timer;
unsigned int T; /* Txxxx number */
@ -66,9 +138,7 @@ struct gprs_rlcmac_tbf {
extern struct llist_head gprs_rlcmac_tbfs;
int select_pdch(uint8_t *_trx, uint8_t *_ts);
int tfi_alloc();
int tfi_alloc(uint8_t *_trx, uint8_t *_ts);
struct gprs_rlcmac_tbf *tbf_alloc(uint8_t tfi, uint8_t trx, uint8_t ts);
@ -78,6 +148,11 @@ struct gprs_rlcmac_tbf *tbf_by_tlli(uint8_t tlli);
void tbf_free(struct gprs_rlcmac_tbf *tbf);
void tbf_timer_start(struct gprs_rlcmac_tbf *tbf, unsigned int T,
unsigned int seconds);
void tbf_timer_stop(struct gprs_rlcmac_tbf *tbf);
/* TS 44.060 Section 10.4.7 Table 10.4.7.1: Payload Type field */
enum gprs_rlcmac_block_type {
GPRS_RLCMAC_DATA_BLOCK = 0x0,
@ -94,9 +169,9 @@ int gprs_rlcmac_rcv_data_block(bitvec *rlc_block);
int gprs_rlcmac_rcv_control_block(bitvec *rlc_block);
void gprs_rlcmac_rcv_block(bitvec *rlc_block);
int gprs_rlcmac_rcv_block(uint8_t *data, uint8_t len, uint32_t fn);
void gprs_rlcmac_rcv_rts_block(uint8_t trx, uint8_t ts, uint16_t arfcn,
int gprs_rlcmac_rcv_rts_block(uint8_t trx, uint8_t ts, uint16_t arfcn,
uint32_t fn, uint8_t block_nr);
int gprs_rlcmac_rcv_rach(uint8_t ra, uint32_t Fn, int16_t qta);
@ -111,5 +186,11 @@ void gprs_rlcmac_downlink_assignment(gprs_rlcmac_tbf *tbf);
void gprs_rlcmac_packet_downlink_assignment(gprs_rlcmac_tbf *tbf);
void gprs_rlcmac_enqueue_block(bitvec *block, int len);
int gprs_rlcmac_rcv_data_block_acknowledged(uint8_t *data, uint8_t len);
struct msgb *gprs_rlcmac_send_uplink_ack(struct gprs_rlcmac_tbf *tbf,
uint32_t fn);
#endif // GPRS_RLCMAC_H

18
src/pcu_l1_if.cpp
View File

@ -73,8 +73,6 @@ struct l1fwd_hdl {
struct l1fwd_hdl *l1fh = talloc_zero(NULL, struct l1fwd_hdl);
struct pcu_l1if_bts pcu_l1if_bts;
// Variable for storage current FN.
int frame_number;
@ -127,19 +125,19 @@ void pcu_l1if_tx_agch(bitvec * block, int len)
int pcu_l1if_rx_pdch(GsmL1_PhDataInd_t *data_ind)
{
bitvec *block = bitvec_alloc(data_ind->msgUnitParam.u8Size);
bitvec_unpack(block, data_ind->msgUnitParam.u8Buffer);
gprs_rlcmac_rcv_block(block);
bitvec_free(block);
gprs_rlcmac_rcv_block(data_ind->msgUnitParam.u8Buffer,
data_ind->msgUnitParam.u8Size, data_ind->u32Fn);
return 0;
}
static int handle_ph_connect_ind(struct femtol1_hdl *fl1, GsmL1_PhConnectInd_t *connect_ind)
{
pcu_l1if_bts.trx[0].arfcn = connect_ind->u16Arfcn;
pcu_l1if_bts.trx[0].ts[connect_ind->u8Tn].enable = 1;
pcu_l1if_bts.trx[0].ts[connect_ind->u8Tn].tsc = connect_ind->u8Tsc;
struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts;
bts->trx[0].arfcn = connect_ind->u16Arfcn;
bts->trx[0].pdch[connect_ind->u8Tn].enable = 1;
bts->trx[0].pdch[connect_ind->u8Tn].tsc = connect_ind->u8Tsc;
(l1fh->fl1h)->channel_info.arfcn = connect_ind->u16Arfcn;
(l1fh->fl1h)->channel_info.tn = connect_ind->u8Tn;
(l1fh->fl1h)->channel_info.tsc = connect_ind->u8Tsc;
@ -283,8 +281,6 @@ int pcu_l1if_open()
struct femtol1_hdl *fl1h;
int rc;
memset(&pcu_l1if_bts, 0, sizeof(pcu_l1if_bts));
/* allocate new femtol1_handle */
fl1h = talloc_zero(NULL, struct femtol1_hdl);
INIT_LLIST_HEAD(&fl1h->wlc_list);

16
src/pcu_l1_if.h
View File

@ -29,22 +29,6 @@ extern "C" {
#include <osmocom/gsm/gsm_utils.h>
}
struct pcu_l1if_ts {
uint8_t enable;
uint8_t tsc;
};
struct pcu_l1if_trx {
uint16_t arfcn;
struct pcu_l1if_ts ts[8];
};
struct pcu_l1if_bts {
struct pcu_l1if_trx trx[8];
};
extern struct pcu_l1if_bts pcu_l1if_bts;
int get_current_fn();
void set_current_fn(int fn);

10
src/pcu_main.cpp
View File

@ -20,9 +20,12 @@
#include <gprs_bssgp_pcu.h>
#include <arpa/inet.h>
#include <pcu_l1_if.h>
#include <gprs_rlcmac.h>
#include <gsm_timer.h>
#include <gprs_debug.h>
struct gprs_rlcmac_bts *gprs_rlcmac_bts;
// TODO: We should move this parameters to config file.
#define SGSN_IP "127.0.0.1"
#define SGSN_PORT 23000
@ -51,6 +54,11 @@ int main(int argc, char *argv[])
uint16_t nsvci = NSVCI;
struct gprs_ns_inst *sgsn_nsi;
struct gprs_nsvc *nsvc;
gprs_rlcmac_bts = talloc_zero(NULL, struct gprs_rlcmac_bts);
if (!gprs_rlcmac_bts)
return -ENOMEM;
osmo_init_logging(&gprs_log_info);
pcu_l1if_open();
@ -93,5 +101,7 @@ int main(int argc, char *argv[])
}
i++;
}
talloc_free(gprs_rlcmac_bts);
}

53
src/sysmo_l1_if.cpp
View File

@ -39,8 +39,6 @@ extern "C" {
static int pcu_sock_send(struct msgb *msg);
static void pcu_sock_timeout(void *_priv);
struct pcu_l1if_bts pcu_l1if_bts;
// Variable for storage current FN.
int frame_number;
@ -159,7 +157,6 @@ static void pcu_l1if_tx_bcch(uint8_t *data, int len)
static int pcu_rx_data_ind(struct gsm_pcu_if_data *data_ind)
{
int rc = 0;
bitvec *block;
LOGP(DL1IF, LOGL_DEBUG, "Data indication received: sapi=%d arfcn=%d "
"block=%d data=%s\n", data_ind->sapi,
@ -168,14 +165,8 @@ static int pcu_rx_data_ind(struct gsm_pcu_if_data *data_ind)
switch (data_ind->sapi) {
case PCU_IF_SAPI_PDTCH:
block = bitvec_alloc(data_ind->len);
if (!block) {
rc = -ENOMEM;
break;
}
bitvec_unpack(block, data_ind->data);
gprs_rlcmac_rcv_block(block);
bitvec_free(block);
rc = gprs_rlcmac_rcv_block(data_ind->data, data_ind->len,
data_ind->fn);
break;
default:
LOGP(DL1IF, LOGL_ERROR, "Received PCU data indication with "
@ -241,8 +232,10 @@ static int pcu_rx_rach_ind(struct gsm_pcu_if_rach_ind *rach_ind)
static int pcu_rx_info_ind(struct gsm_pcu_if_info_ind *info_ind)
{
struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts;
int rc = 0;
int trx, ts;
int trx, ts, tfi;
struct gprs_rlcmac_tbf *tbf;
// uint8_t si13[23];
LOGP(DL1IF, LOGL_INFO, "Info indication received:\n");
@ -254,21 +247,27 @@ static int pcu_rx_info_ind(struct gsm_pcu_if_info_ind *info_ind)
LOGP(DL1IF, LOGL_INFO, "BTS available\n");
for (trx = 0; trx < 8; trx++) {
pcu_l1if_bts.trx[trx].arfcn = info_ind->trx[trx].arfcn;
bts->trx[trx].arfcn = info_ind->trx[trx].arfcn;
for (ts = 0; ts < 8; ts++) {
if ((info_ind->trx[trx].pdch_mask & (1 << ts))) {
/* FIXME: activate dynamically at RLCMAC */
if (!pcu_l1if_bts.trx[trx].ts[ts].enable)
if (!bts->trx[trx].pdch[ts].enable)
pcu_tx_act_req(trx, ts, 1);
pcu_l1if_bts.trx[trx].ts[ts].enable = 1;
pcu_l1if_bts.trx[trx].ts[ts].tsc =
bts->trx[trx].pdch[ts].enable = 1;
bts->trx[trx].pdch[ts].tsc =
info_ind->trx[trx].tsc[ts];
LOGP(DL1IF, LOGL_INFO, "PDCH: trx=%d ts=%d\n",
trx, ts);
} else {
if (pcu_l1if_bts.trx[trx].ts[ts].enable)
if (bts->trx[trx].pdch[ts].enable)
pcu_tx_act_req(trx, ts, 0);
pcu_l1if_bts.trx[trx].ts[ts].enable = 0;
bts->trx[trx].pdch[ts].enable = 0;
/* kick all tbf FIXME: multislot */
for (tfi = 0; tfi < 32; tfi++) {
tbf = bts->trx[trx].pdch[ts].tbf[tfi];
if (tbf)
tbf_free(tbf);
}
}
}
}
@ -342,6 +341,9 @@ static int pcu_sock_send(struct msgb *msg)
static void pcu_sock_close(struct pcu_sock_state *state)
{
struct osmo_fd *bfd = &state->conn_bfd;
struct gprs_rlcmac_bts *bts = gprs_rlcmac_bts;
struct gprs_rlcmac_tbf *tbf;
uint8_t trx, ts, tfi;
LOGP(DL1IF, LOGL_NOTICE, "PCU socket has LOST connection\n");
@ -355,8 +357,17 @@ static void pcu_sock_close(struct pcu_sock_state *state)
msgb_free(msg);
}
/* disable all slots */
memset(&pcu_l1if_bts, 0, sizeof(pcu_l1if_bts));
/* disable all slots, kick all TBFs */
for (trx = 0; trx < 8; trx++) {
for (ts = 0; ts < 8; ts++) {
bts->trx[trx].pdch[ts].enable = 0;
for (tfi = 0; tfi < 32; tfi++) {
tbf = bts->trx[trx].pdch[ts].tbf[tfi];
if (tbf)
tbf_free(tbf);
}
}
}
state->timer.cb = pcu_sock_timeout;
osmo_timer_schedule(&state->timer, 5, 0);
@ -470,8 +481,6 @@ int pcu_l1if_open(void)
unsigned int namelen;
int rc;
memset(&pcu_l1if_bts, 0, sizeof(pcu_l1if_bts));
state = pcu_sock_state;
if (!state) {
state = talloc_zero(NULL, struct pcu_sock_state);