Review at https://gerrit.osmocom.org/5863
TBF: make UL ack state internal
* add functions/macros for setting TBF's UL ack state
* add functions for checking TBF's UL ack state
* update TBF test output due to extended state transition logging
N. B: this should not be confused with TBF-UL state.
Change-Id: I144483447d4b0b93e775da0e926ee45eb8ab39f3
Related: OS#1539
---
M src/gprs_rlcmac_sched.cpp
M src/tbf.cpp
M src/tbf.h
M src/tbf_ul.cpp
M tests/tbf/TbfTest.cpp
M tests/tbf/TbfTest.err
6 files changed, 49 insertions(+), 13 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-pcu refs/changes/63/5863/1
diff --git a/src/gprs_rlcmac_sched.cpp b/src/gprs_rlcmac_sched.cpp
index a87217f..3f9fcb1 100644
--- a/src/gprs_rlcmac_sched.cpp
+++ b/src/gprs_rlcmac_sched.cpp
@@ -52,7 +52,7 @@
if (ul_tbf->poll_state == GPRS_RLCMAC_POLL_SCHED
&& ul_tbf->poll_fn == poll_fn)
*poll_tbf = ul_tbf;
- if (ul_tbf->ul_ack_state == GPRS_RLCMAC_UL_ACK_SEND_ACK)
+ if (ul_tbf->ul_ack_state_is(GPRS_RLCMAC_UL_ACK_SEND_ACK))
*ul_ack_tbf = ul_tbf;
if (ul_tbf->dl_ass_state_is(GPRS_RLCMAC_DL_ASS_SEND_ASS))
*dl_ass_tbf = ul_tbf;
diff --git a/src/tbf.cpp b/src/tbf.cpp
index 6ebe77e..ef78820 100644
--- a/src/tbf.cpp
+++ b/src/tbf.cpp
@@ -60,6 +60,13 @@
{ 0, NULL }
};
+const struct value_string gprs_rlcmac_tbf_ul_ack_state_names[] = {
+ OSMO_VALUE_STRING(GPRS_RLCMAC_UL_ACK_NONE),
+ OSMO_VALUE_STRING(GPRS_RLCMAC_UL_ACK_SEND_ACK), /* send acknowledge on
next RTS */
+ OSMO_VALUE_STRING(GPRS_RLCMAC_UL_ACK_WAIT_ACK), /* wait for PACKET
CONTROL ACK */
+ { 0, NULL }
+};
+
static const struct value_string tbf_timers_names[] = {
OSMO_VALUE_STRING(T0),
OSMO_VALUE_STRING(T3169),
@@ -165,7 +172,6 @@
first_ts(0),
first_common_ts(0),
control_ts(0xff),
- ul_ack_state(GPRS_RLCMAC_UL_ACK_NONE),
poll_state(GPRS_RLCMAC_POLL_NONE),
poll_fn(0),
poll_ts(0),
@@ -185,6 +191,7 @@
state(GPRS_RLCMAC_NULL),
dl_ass_state(GPRS_RLCMAC_DL_ASS_NONE),
ul_ass_state(GPRS_RLCMAC_UL_ASS_NONE),
+ ul_ack_state(GPRS_RLCMAC_UL_ACK_NONE),
m_list(this),
m_ms_list(this),
m_egprs_enabled(false)
diff --git a/src/tbf.h b/src/tbf.h
index 7cc0587..19aa41a 100644
--- a/src/tbf.h
+++ b/src/tbf.h
@@ -87,6 +87,8 @@
GPRS_RLCMAC_UL_ACK_WAIT_ACK, /* wait for PACKET CONTROL ACK */
};
+extern const struct value_string gprs_rlcmac_tbf_ul_ack_state_names[];
+
enum gprs_rlcmac_tbf_direction {
GPRS_RLCMAC_DL_TBF,
GPRS_RLCMAC_UL_TBF
@@ -183,6 +185,7 @@
#define TBF_SET_STATE(t, st) do { t->set_state(st, __FILE__, __LINE__); }
while(0)
#define TBF_SET_ASS_STATE_DL(t, st) do { t->set_ass_state_dl(st, __FILE__,
__LINE__); } while(0)
#define TBF_SET_ASS_STATE_UL(t, st) do { t->set_ass_state_ul(st, __FILE__,
__LINE__); } while(0)
+#define TBF_SET_ACK_STATE(t, st) do { t->set_ack_state(st, __FILE__,
__LINE__); } while(0)
#define TBF_SET_ASS_ON(t, fl, chk) do { t->set_assigned_on(fl, chk, __FILE__,
__LINE__); } while(0)
struct gprs_rlcmac_tbf {
@@ -195,9 +198,11 @@
bool state_is_not(enum gprs_rlcmac_tbf_state rhs) const;
bool dl_ass_state_is(enum gprs_rlcmac_tbf_dl_ass_state rhs) const;
bool ul_ass_state_is(enum gprs_rlcmac_tbf_ul_ass_state rhs) const;
+ bool ul_ack_state_is(enum gprs_rlcmac_tbf_ul_ack_state rhs) const;
void set_state(enum gprs_rlcmac_tbf_state new_state, const char *file,
int line);
void set_ass_state_dl(enum gprs_rlcmac_tbf_dl_ass_state new_state,
const char *file, int line);
void set_ass_state_ul(enum gprs_rlcmac_tbf_ul_ass_state new_state,
const char *file, int line);
+ void set_ack_state(enum gprs_rlcmac_tbf_ul_ack_state new_state, const
char *file, int line);
void check_pending_ass();
bool check_n_clear(uint8_t state_flag);
void set_assigned_on(uint8_t state_flag, bool check_ccch, const char
*file, int line);
@@ -279,8 +284,6 @@
gprs_llc m_llc;
- enum gprs_rlcmac_tbf_ul_ack_state ul_ack_state;
-
enum gprs_rlcmac_tbf_poll_state poll_state;
uint32_t poll_fn; /* frame number to poll */
uint8_t poll_ts; /* TS to poll */
@@ -343,6 +346,7 @@
enum gprs_rlcmac_tbf_state state;
enum gprs_rlcmac_tbf_dl_ass_state dl_ass_state;
enum gprs_rlcmac_tbf_ul_ass_state ul_ass_state;
+ enum gprs_rlcmac_tbf_ul_ack_state ul_ack_state;
LListHead<gprs_rlcmac_tbf> m_list;
LListHead<gprs_rlcmac_tbf> m_ms_list;
bool m_egprs_enabled;
@@ -383,6 +387,11 @@
inline bool gprs_rlcmac_tbf::ul_ass_state_is(enum gprs_rlcmac_tbf_ul_ass_state
rhs) const
{
return ul_ass_state == rhs;
+}
+
+inline bool gprs_rlcmac_tbf::ul_ack_state_is(enum gprs_rlcmac_tbf_ul_ack_state
rhs) const
+{
+ return ul_ack_state == rhs;
}
inline bool gprs_rlcmac_tbf::state_is_not(enum gprs_rlcmac_tbf_state rhs) const
@@ -434,6 +443,15 @@
ul_ass_state = new_state;
}
+inline void gprs_rlcmac_tbf::set_ack_state(enum gprs_rlcmac_tbf_ul_ack_state
new_state, const char *file, int line)
+{
+ LOGPSRC(DRLCMAC, LOGL_DEBUG, file, line, "%s changes UL ACK state from
%s to %s\n",
+ tbf_name(this),
+ get_value_string(gprs_rlcmac_tbf_ul_ack_state_names,
ul_ack_state),
+ get_value_string(gprs_rlcmac_tbf_ul_ack_state_names,
new_state));
+ ul_ack_state = new_state;
+}
+
inline void gprs_rlcmac_tbf::check_pending_ass()
{
if (ul_ass_state != GPRS_RLCMAC_UL_ASS_NONE)
diff --git a/src/tbf_ul.cpp b/src/tbf_ul.cpp
index eaf9c93..de3d247 100644
--- a/src/tbf_ul.cpp
+++ b/src/tbf_ul.cpp
@@ -106,8 +106,8 @@
bool gprs_rlcmac_ul_tbf::handle_ctrl_ack()
{
/* check if this control ack belongs to packet uplink ack */
- if (ul_ack_state == GPRS_RLCMAC_UL_ACK_WAIT_ACK) {
- ul_ack_state = GPRS_RLCMAC_UL_ACK_NONE;
+ if (ul_ack_state_is(GPRS_RLCMAC_UL_ACK_WAIT_ACK)) {
+ TBF_SET_ACK_STATE(this, GPRS_RLCMAC_UL_ACK_NONE);
return true;
}
@@ -124,7 +124,7 @@
if (final) {
if (poll_state == GPRS_RLCMAC_POLL_SCHED &&
- ul_ack_state == GPRS_RLCMAC_UL_ACK_WAIT_ACK) {
+ ul_ack_state_is(GPRS_RLCMAC_UL_ACK_WAIT_ACK)) {
LOGPTBFUL(this, LOGL_DEBUG,
"Polling is already scheduled, so we must
wait for the final uplink ack...\n");
return NULL;
@@ -158,7 +158,7 @@
/* waiting for final acknowledge */
m_final_ack_sent = 1;
} else
- ul_ack_state = GPRS_RLCMAC_UL_ACK_NONE;
+ TBF_SET_ACK_STATE(this, GPRS_RLCMAC_UL_ACK_NONE);
return msg;
}
@@ -369,9 +369,9 @@
"because %d frames received.\n",
SEND_ACK_AFTER_FRAMES);
}
- if (ul_ack_state == GPRS_RLCMAC_UL_ACK_NONE) {
+ if (ul_ack_state_is(GPRS_RLCMAC_UL_ACK_NONE)) {
/* trigger sending at next RTS */
- ul_ack_state = GPRS_RLCMAC_UL_ACK_SEND_ACK;
+ TBF_SET_ACK_STATE(this, GPRS_RLCMAC_UL_ACK_SEND_ACK);
} else {
/* already triggered */
LOGP(DRLCMACUL, LOGL_DEBUG, "- Sending Ack/Nack is "
diff --git a/tests/tbf/TbfTest.cpp b/tests/tbf/TbfTest.cpp
index 968f9eb..0ac519c 100644
--- a/tests/tbf/TbfTest.cpp
+++ b/tests/tbf/TbfTest.cpp
@@ -1350,7 +1350,7 @@
request_dl_rlc_block(ul_tbf, fn);
check_tbf(ul_tbf);
- OSMO_ASSERT(ul_tbf->ul_ack_state == GPRS_RLCMAC_UL_ACK_NONE);
+ OSMO_ASSERT(ul_tbf->ul_ack_state_is(GPRS_RLCMAC_UL_ACK_NONE));
ms = the_bts->ms_by_tlli(tlli);
OSMO_ASSERT(ms != NULL);
@@ -1434,7 +1434,7 @@
request_dl_rlc_block(ul_tbf, fn);
check_tbf(ul_tbf);
- OSMO_ASSERT(ul_tbf->ul_ack_state == GPRS_RLCMAC_UL_ACK_NONE);
+ OSMO_ASSERT(ul_tbf->ul_ack_state_is(GPRS_RLCMAC_UL_ACK_NONE));
ms = the_bts->ms_by_tlli(tlli);
OSMO_ASSERT(ms != NULL);
@@ -1522,7 +1522,7 @@
request_dl_rlc_block(ul_tbf, fn);
check_tbf(ul_tbf);
- OSMO_ASSERT(ul_tbf->ul_ack_state == GPRS_RLCMAC_UL_ACK_NONE);
+ OSMO_ASSERT(ul_tbf->ul_ack_state_is(GPRS_RLCMAC_UL_ACK_NONE));
ms = the_bts->ms_by_tlli(tlli);
OSMO_ASSERT(ms != NULL);
diff --git a/tests/tbf/TbfTest.err b/tests/tbf/TbfTest.err
index 00f50b8..687ec3b 100644
--- a/tests/tbf/TbfTest.err
+++ b/tests/tbf/TbfTest.err
@@ -1594,6 +1594,7 @@
TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW) changes state from FLOW to
FINISHED
- Scheduling Ack/Nack, because TLLI is included.
- Scheduling Ack/Nack, because last block has CV==0.
+TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FINISHED) changes UL ACK state from
GPRS_RLCMAC_UL_ACK_NONE to GPRS_RLCMAC_UL_ACK_SEND_ACK
Got 'TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FINISHED)', TA=7
Got MS: TLLI = 0xf1223344, TA = 7
********** DL-TBF starts here **********
@@ -2257,6 +2258,7 @@
TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW) changes state from FLOW to
FINISHED
- Scheduling Ack/Nack, because TLLI is included.
- Scheduling Ack/Nack, because last block has CV==0.
+TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FINISHED) changes UL ACK state from
GPRS_RLCMAC_UL_ACK_NONE to GPRS_RLCMAC_UL_ACK_SEND_ACK
New MS: TLLI = 0xf1223344, TA = 7, IMSI = 0011223344, LLC = 2
Sending data request: trx=0 ts=7 sapi=5 arfcn=0 fn=2654218 block=8 data=47 94
2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
MS requests UL TBF on RACH, so we provide one: ra=0x73 Fn=2654167 qta=31
is_11bit=0:
@@ -3627,6 +3629,7 @@
-- Frame 1 starts at offset 0, length=74, is_complete=0
- No gaps in received block, last block: BSN=1 CV=7
- Scheduling Ack/Nack, because MS is stalled.
+TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW EGPRS) changes UL ACK state from
GPRS_RLCMAC_UL_ACK_NONE to GPRS_RLCMAC_UL_ACK_SEND_ACK
Got RLC block, coding scheme: MCS-3, length: 42 (42))
UL data: 1f 10 40 cd 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Got MCS-3 RLC block: R=1, SI=1, TFI=0, CPS=5, RSB=0, rc=329
@@ -6574,6 +6577,7 @@
Encoding Ack/Nack for TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW EGPRS)
(final=0)
EGPRS URBB, urbb len = 0, SSN = 3, ESN_CRBB = 2, len present = yes,desc len =
15, SNS = 2048, WS = 64, V(Q) = 2, V(R) = 2, BOW, EOW
Uplink Ack/Nack bit count 98, max 184, message = 40 24 01 3f 3e 24 46 68 90 87
b0 06 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
+TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW EGPRS) changes UL ACK state from
GPRS_RLCMAC_UL_ACK_NONE to GPRS_RLCMAC_UL_ACK_NONE
Got RLC block, coding scheme: MCS-3, length: 42 (42))
UL data: 1d 20 40 c1 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Got MCS-3 RLC block: R=1, SI=0, TFI=0, CPS=5, RSB=0, rc=329
@@ -6587,6 +6591,7 @@
Encoding Ack/Nack for TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW EGPRS)
(final=0)
EGPRS URBB, urbb len = 2, SSN = 3, ESN_CRBB = 2, len present = yes,desc len =
17, SNS = 2048, WS = 64, V(Q) = 2, V(R) = 5, BOW, EOW
Uplink Ack/Nack bit count 100, max 184, message = 40 24 01 3f 3e 24 46 68 90
88 b0 06 8b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
+TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW EGPRS) changes UL ACK state from
GPRS_RLCMAC_UL_ACK_NONE to GPRS_RLCMAC_UL_ACK_NONE
Got 'TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW EGPRS)', TA=7
Got MS: TLLI = 0xf1223344, TA = 7
********** DL-TBF starts here **********
@@ -7391,6 +7396,7 @@
TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW EGPRS): data_length=44, data=00 80
95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95
95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95
- Raising V(R) to 39
- Scheduling Ack/Nack, because 20 frames received.
+TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW EGPRS) changes UL ACK state from
GPRS_RLCMAC_UL_ACK_NONE to GPRS_RLCMAC_UL_ACK_SEND_ACK
Got RLC block, coding scheme: MCS-4, length: 49 (49))
UL data: 28 40 01 80 00 00 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
2b
Got MCS-4 RLC block: R=0, SI=0, TFI=0, CPS=0, RSB=0, rc=385
@@ -8002,6 +8008,7 @@
the ucmp len=157 uclen_crbb=19 num_blocks=157 crbb length 78, and the CRBB
bitmap = 1e 1e 1e 1e 1e 1e 1e 1e 1e 1e
EGPRS URBB, urbb len = 94, SSN = 2, ESN_CRBB = 1, len present = No,desc len =
109, SNS = 2048, WS = 192, V(Q) = 1, V(R) = 159, BOW
Uplink Ack/Nack bit count 184, max 184, message = 40 24 01 3f 3e 24 46 68 90
20 04 55 55 55 55 55 55 55 55 55 55 55 54
+TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW EGPRS) changes UL ACK state from
GPRS_RLCMAC_UL_ACK_SEND_ACK to GPRS_RLCMAC_UL_ACK_NONE
Got RLC block, coding scheme: MCS-4, length: 49 (49))
UL data: 00 00 02 80 00 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
2b
Got MCS-4 RLC block: R=0, SI=0, TFI=0, CPS=0, RSB=0, rc=385
@@ -8235,6 +8242,7 @@
TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW EGPRS): data_length=44, data=00 80
95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95
95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95
- Raising V(R) to 37
- Scheduling Ack/Nack, because 20 frames received.
+TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW EGPRS) changes UL ACK state from
GPRS_RLCMAC_UL_ACK_NONE to GPRS_RLCMAC_UL_ACK_SEND_ACK
Got RLC block, coding scheme: MCS-4, length: 49 (49))
UL data: 28 30 01 80 00 00 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
2b
Got MCS-4 RLC block: R=0, SI=0, TFI=0, CPS=0, RSB=0, rc=385
@@ -8248,6 +8256,7 @@
Encoding Ack/Nack for TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW EGPRS)
(final=0)
EGPRS URBB, urbb len = 37, SSN = 2, ESN_CRBB = 1, len present = yes,desc len =
52, SNS = 2048, WS = 192, V(Q) = 1, V(R) = 39, BOW, EOW
Uplink Ack/Nack bit count 135, max 184, message = 40 24 01 3f 3e 24 46 68 90
9a 30 04 aa aa aa aa a9 2b 2b 2b 2b 2b 2b
+TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW EGPRS) changes UL ACK state from
GPRS_RLCMAC_UL_ACK_SEND_ACK to GPRS_RLCMAC_UL_ACK_NONE
Got RLC block, coding scheme: MCS-4, length: 49 (49))
UL data: 00 00 02 80 00 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
2b
Got MCS-4 RLC block: R=0, SI=0, TFI=0, CPS=0, RSB=0, rc=385
@@ -8449,6 +8458,7 @@
TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW EGPRS): data_length=44, data=00 80
95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95
95 95 95 95 95 95 95 95 95 95 95 95 95 95 95 95
- Raising V(R) to 98
- Scheduling Ack/Nack, because 20 frames received.
+TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW EGPRS) changes UL ACK state from
GPRS_RLCMAC_UL_ACK_NONE to GPRS_RLCMAC_UL_ACK_SEND_ACK
Got RLC block, coding scheme: MCS-4, length: 49 (49))
UL data: 28 10 03 80 00 00 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
2b
Got MCS-4 RLC block: R=0, SI=0, TFI=0, CPS=0, RSB=0, rc=385
@@ -9082,6 +9092,7 @@
EGPRS CRBB, crbb_len = 30, crbb_start_clr_code = 0
EGPRS URBB, urbb len = 0, SSN = 1, ESN_CRBB = 159, len present = yes,desc len
= 53, SNS = 2048, WS = 192, V(Q) = 0, V(R) = 160, BOW, EOW
Uplink Ack/Nack bit count 136, max 184, message = 40 24 01 3f 3e 24 46 68 90
9a b0 03 3c 03 c3 1b a0 2b 2b 2b 2b 2b 2b
+TBF(TFI=0 TLLI=0xf1223344 DIR=UL STATE=FLOW EGPRS) changes UL ACK state from
GPRS_RLCMAC_UL_ACK_SEND_ACK to GPRS_RLCMAC_UL_ACK_NONE
Got RLC block, coding scheme: MCS-4, length: 49 (49))
UL data: 00 00 02 80 00 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
2b
Got MCS-4 RLC block: R=0, SI=0, TFI=0, CPS=0, RSB=0, rc=385
--
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I144483447d4b0b93e775da0e926ee45eb8ab39f3
Gerrit-PatchSet: 1
Gerrit-Project: osmo-pcu
Gerrit-Branch: master
Gerrit-Owner: Max <msur...@sysmocom.de>
