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Add stats: pcu.bts.N.pdch.occupied.gprs/egprs 

Add stats needed for performance measurements in
3GPP TS 52.402 § B.2.1.54-55.

Split m_num_tbfs to count GPRS and EGPRS TBFs separately. Move the code
that updates m_num_tbfs and sets the PDCH_OCCUPIED stats to a separate
function, as it's mostly the same in the TBF attach and detach.

Related: SYS#4878
Change-Id: I0c0a1121b4ae5f031782e7e63a0c28eb0b6c8b42
This commit is contained in:
Oliver Smith 2021-09-08 09:33:24 +02:00
parent 6c81adda45
commit 402451b308
6 changed files with 65 additions and 26 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
src/bts.cpp
View File

@ -201,7 +201,11 @@ static const struct osmo_stat_item_desc bts_stat_item_description[] = {
OSMO_STAT_ITEM_NO_UNIT, 4, 0},
{ "pdch.available", "PDCH available ",
OSMO_STAT_ITEM_NO_UNIT, 50, 0},
{ "pdch.occupied", "PDCH occupied ",
{ "pdch.occupied", "PDCH occupied (all) ",
OSMO_STAT_ITEM_NO_UNIT, 50, 0},
{ "pdch.occupied.gprs", "PDCH occupied (GPRS) ",
OSMO_STAT_ITEM_NO_UNIT, 50, 0},
{ "pdch.occupied.egprs","PDCH occupied (EGPRS)",
OSMO_STAT_ITEM_NO_UNIT, 50, 0},
};

2
src/bts.h
View File

@ -184,6 +184,8 @@ enum {
STAT_MS_PRESENT,
STAT_PDCH_AVAILABLE,
STAT_PDCH_OCCUPIED,
STAT_PDCH_OCCUPIED_GPRS,
STAT_PDCH_OCCUPIED_EGPRS,
};
/* RACH.ind parameters (to be parsed) */

53
src/pdch.cpp
View File

@ -1036,6 +1036,33 @@ gprs_rlcmac_tbf *gprs_rlcmac_pdch::tbf_by_tfi(uint8_t tfi,
return tbf;
}
void gprs_rlcmac_pdch::num_tbfs_update(gprs_rlcmac_tbf *tbf, bool is_attach)
{
int threshold = is_attach ? 0 : 1;
int inc = is_attach ? 1 : -1;
uint8_t ul_dl_gprs = m_num_tbfs_gprs[GPRS_RLCMAC_UL_TBF] +
m_num_tbfs_gprs[GPRS_RLCMAC_DL_TBF];
uint8_t ul_dl_egprs = m_num_tbfs_egprs[GPRS_RLCMAC_UL_TBF] +
m_num_tbfs_egprs[GPRS_RLCMAC_DL_TBF];
/* Count PDCHs with at least one TBF as "occupied", as in
* 3GPP TS 52.402 § B.2.1.42-44. So if transitioning from 0 (threshold)
* TBFs in this PDCH to 1, increase the counter by 1 (inc). */
if (ul_dl_gprs + ul_dl_egprs == threshold)
bts_stat_item_add(trx->bts, STAT_PDCH_OCCUPIED, inc);
/* Update occupied GPRS/EGPRS stats (§ B.2.1.54-55) too */
if (tbf->is_egprs_enabled() && ul_dl_egprs == threshold)
bts_stat_item_add(trx->bts, STAT_PDCH_OCCUPIED_EGPRS, inc);
else if (!tbf->is_egprs_enabled() && ul_dl_gprs == threshold)
bts_stat_item_add(trx->bts, STAT_PDCH_OCCUPIED_GPRS, inc);
if (tbf->is_egprs_enabled())
m_num_tbfs_egprs[tbf->direction] += inc;
else
m_num_tbfs_gprs[tbf->direction] += inc;
}
void gprs_rlcmac_pdch::attach_tbf(gprs_rlcmac_tbf *tbf)
{
gprs_rlcmac_ul_tbf *ul_tbf;
@ -1045,13 +1072,7 @@ void gprs_rlcmac_pdch::attach_tbf(gprs_rlcmac_tbf *tbf)
"%s has not been detached, overwriting it\n",
m_tbfs[tbf->direction][tbf->tfi()]->name());
/* Count PDCHs with at least one TBF as "occupied", as in
* 3GPP TS 52.402 § B.2.1.42-44. So if transitioning from 0 TBFs in
* this PDCH to 1, increase the counter by 1. */
if (m_num_tbfs[GPRS_RLCMAC_UL_TBF] + m_num_tbfs[GPRS_RLCMAC_DL_TBF] == 0)
bts_stat_item_inc(trx->bts, STAT_PDCH_OCCUPIED);
m_num_tbfs[tbf->direction] += 1;
num_tbfs_update(tbf, true);
if (tbf->direction == GPRS_RLCMAC_UL_TBF) {
ul_tbf = as_ul_tbf(tbf);
m_assigned_usf |= 1 << ul_tbf->m_usf[ts_no];
@ -1061,7 +1082,7 @@ void gprs_rlcmac_pdch::attach_tbf(gprs_rlcmac_tbf *tbf)
LOGPDCH(this, DRLCMAC, LOGL_INFO, "Attaching %s, %d TBFs, "
"USFs = %02x, TFIs = %08x.\n",
tbf->name(), m_num_tbfs[tbf->direction],
tbf->name(), num_tbfs(tbf->direction),
m_assigned_usf, m_assigned_tfi[tbf->direction]);
}
@ -1069,15 +1090,13 @@ void gprs_rlcmac_pdch::detach_tbf(gprs_rlcmac_tbf *tbf)
{
gprs_rlcmac_ul_tbf *ul_tbf;
OSMO_ASSERT(m_num_tbfs[tbf->direction] > 0);
if (tbf->is_egprs_enabled()) {
OSMO_ASSERT(m_num_tbfs_egprs[tbf->direction] > 0);
} else {
OSMO_ASSERT(m_num_tbfs_gprs[tbf->direction] > 0);
}
/* Count PDCHs with at least one TBF as "occupied", as in
* 3GPP TS 52.402 § B.2.1.42-44. So if transitioning from 1 TBFs in
* this PDCH to 0, decrease the counter by 1. */
if (m_num_tbfs[GPRS_RLCMAC_UL_TBF] + m_num_tbfs[GPRS_RLCMAC_DL_TBF] == 1)
bts_stat_item_dec(trx->bts, STAT_PDCH_OCCUPIED);
m_num_tbfs[tbf->direction] -= 1;
num_tbfs_update(tbf, false);
if (tbf->direction == GPRS_RLCMAC_UL_TBF) {
ul_tbf = as_ul_tbf(tbf);
m_assigned_usf &= ~(1 << ul_tbf->m_usf[ts_no]);
@ -1089,7 +1108,7 @@ void gprs_rlcmac_pdch::detach_tbf(gprs_rlcmac_tbf *tbf)
LOGPDCH(this, DRLCMAC, LOGL_INFO, "Detaching %s, %d TBFs, "
"USFs = %02x, TFIs = %08x.\n",
tbf->name(), m_num_tbfs[tbf->direction],
tbf->name(), num_tbfs(tbf->direction),
m_assigned_usf, m_assigned_tfi[tbf->direction]);
}

6
src/pdch.h
View File

@ -78,6 +78,7 @@ struct gprs_rlcmac_pdch {
void detach_tbf(gprs_rlcmac_tbf *tbf);
unsigned num_tbfs(enum gprs_rlcmac_tbf_direction dir) const;
void num_tbfs_update(gprs_rlcmac_tbf *tbf, bool is_attach);
void reserve(enum gprs_rlcmac_tbf_direction dir);
void unreserve(enum gprs_rlcmac_tbf_direction dir);
@ -147,7 +148,8 @@ private:
void free_resources();
#endif
uint8_t m_num_tbfs[2];
uint8_t m_num_tbfs_gprs[2];
uint8_t m_num_tbfs_egprs[2];
uint8_t m_num_reserved[2];
uint8_t m_assigned_usf; /* bit set */
uint32_t m_assigned_tfi[2]; /* bit set */
@ -158,7 +160,7 @@ private:
inline unsigned gprs_rlcmac_pdch::num_tbfs(enum gprs_rlcmac_tbf_direction dir) const
{
return m_num_tbfs[dir];
return m_num_tbfs_gprs[dir] + m_num_tbfs_egprs[dir];
}
inline unsigned gprs_rlcmac_pdch::num_reserved(

18
src/tbf.cpp
View File

@ -763,6 +763,24 @@ bool gprs_rlcmac_tbf::is_control_ts(uint8_t ts) const
return ts == control_ts;
}
void gprs_rlcmac_tbf::enable_egprs()
{
/* Decrease GPRS TBF count of attached PDCHs */
for (size_t ts = 0; ts < ARRAY_SIZE(pdch); ts++) {
if (pdch[ts])
pdch[ts]->num_tbfs_update(this, false);
}
m_egprs_enabled = true;
window()->set_sns(RLC_EGPRS_SNS);
/* Increase EGPRS TBF count of attached PDCHs */
for (size_t ts = 0; ts < ARRAY_SIZE(pdch); ts++) {
if (pdch[ts])
pdch[ts]->num_tbfs_update(this, true);
}
}
/* C API */
enum tbf_fsm_states tbf_state(const struct gprs_rlcmac_tbf *tbf)
{

6
src/tbf.h
View File

@ -354,12 +354,6 @@ inline bool gprs_rlcmac_tbf::is_egprs_enabled() const
return m_egprs_enabled;
}
inline void gprs_rlcmac_tbf::enable_egprs()
{
m_egprs_enabled = true;
window()->set_sns(RLC_EGPRS_SNS);
}
inline enum gprs_rlcmac_tbf_direction reverse(enum gprs_rlcmac_tbf_direction dir)
{
return (enum gprs_rlcmac_tbf_direction)