Commit Graph

635 Commits

Author SHA1 Message Date
Harald Welte 3215344300 add support for sysmoBTS 1003 aka "1002 with GPS and PoE"
There's a minor derivative version of sysmoBTS 1002 which has built-in
GPS and PoE.  We call it 1003 in the EEPROM. Let's treat it identical
to 1002 in the existing code base.

Related: SYS#5327
Change-Id: Ia558587d36a75a1db1951d25b471b3f2e78ef4c9
2021-02-15 10:57:58 +00:00
Harald Welte 6eb98ab25c Use osmo_fd_*_{disable,enable}
Depends: libosmocore.git Idb89ba7bc7c129a6304a76900d17f47daf54d17d
Change-Id: I0da17d851ccb83c28a70c9039d0a4d1fe63da0ec
2021-02-03 10:41:16 +01:00
Vadim Yanitskiy e8f857453d power_control: migrate MS/BS control loops to the new params
In change [1] the new power control structures and default params
were introduced.  In change [2], the existing VTY commands for MS
power control in the BTS were deprecated and changed to use the
new structures as storage.  Finally, in change [3], handling of
the power control parameters on the A-bis/RSL was implemented.

This change is the final logical step in the mentioned chain: it
makes both MS/BS power control loops use the new parameters, and
removes the old structures.  The actual implementation of both
power control loops remains the same, however the expected output
of some unit tests for the Downlink loop needs to be changed:

  - TC_fixed_mode: disabling dynamic power control becomes a separate
    step of the test script since the field 'fixed' is removed;

  - TC_rxlev_target: RxLev thresholds are printed 'as-is'.

Not all of the new parameters are used by the power control loops
yet.  Further improvements to be done in the follow up commits.

[1] I6d41eb238aa6d4f5b77596c5477c2ecbe86de2a8
[2] Icbd9a7d31ce6723294130a31a179a002fccb4612
[3] I5a901eca5a78a0335a6954064e602e65cda85390

Change-Id: Ib18f84c40227841d95a36063a6789bf63054fc2e
Related: SYS#4918
2021-01-08 02:05:27 +01:00
Pau Espin Pedrol 20cbf7bc67 cosmetic: sysmobts-mgr: fix whitespace indentation
Change-Id: I8449a34998808f7e13cc5d1eafb5420b1cc0a9d4
2021-01-04 18:07:23 +01:00
Vadim Yanitskiy 237ec6194b power_control: clarify units in 'struct bts_power_ctrl_params'
Change-Id: Icb059ca1f555397be116a424800e4536883b9106
Related: SYS#4918
2020-12-06 18:59:05 +01:00
Vadim Yanitskiy af4eec056e struct gsm_bts: move ul_power_{target,hysteresis} to ul_power_ctrl
Change-Id: I3886c7aedf3870536f1750f864cf698302ddf2df
Related: SYS#4918
2020-12-02 13:56:49 +00:00
Neels Hofmeyr 1c05ef15ec part 2 of: fix SAPIs for handover, osmo-bts-sysmo
Change-Id: I30e2ca003a3b15766d9d9dcf529fb2157523758f
2020-11-26 09:22:38 +00:00
Neels Hofmeyr da680071a6 rename to release_sapi_ul_rach(), simplify
The sapis_for_ho have only one member, so it's silly to iterate. A
subsequent commit will drop sapis_for_ho.

Change-Id: I896fbca9876fd274ff9c426250b18b50faebfa89
2020-11-26 09:22:38 +00:00
Pau Espin 28d0a1db79 sysmobts-mgr: generate coredump and exit upon SIGABRT received
Previous code relied on abort() switching sigaction to SIG_FDL +
retriggering SIGABRT in case the signal handler returns, which would
then generate the coredump + terminate the process.
However, if a SIGABRT is received from somewhere else (kill -SIGABRT),
then the process would print the talloc report and continue running,
which is not desired.

Change-Id: I35ae930b59c48892e5ad9a2826e05d6c5d415abc
Fixes: OS#4865
2020-11-25 19:05:25 +01:00
Vadim Yanitskiy ffbe63f408 fixup: vty: call bts_model_vty_init() from bts_vty_init()
Now bts_model_vty_init() must be called only once, otherwise the
process would crash when bts_model_init() is called from main().

Change-Id: I262c39896b5db86c54ad9aa7042c7ca6657815d9
Related: SYS#4937, OS#3036
2020-11-03 05:44:28 +07:00
Vadim Yanitskiy 5c7b709027 vty: call bts_model_vty_init() from bts_vty_init()
Similar to bts_vty_init(), BTS specific bts_model_vty_init()
requires a pointer to 'struct gsm_bts'.  Not only it's used
as a parent talloc context, but also stored locally, so then
it can be used by some VTY commands.

Let's expose the global 'struct gsm_bts' from main, and pass
the application's talloc context like was done in [1].

This finally makes the BTS model specific options appear in
the automatically generated VTY reference (--vty-ref-xml).

[1] Ic356a950da85de02c82e9882a5fbadaaa6929680

Change-Id: Iee7fee6747dd1e7c0af36f9b27326f651ae37aaf
Related: SYS#4937, OS#3036
2020-11-02 18:08:24 +00:00
Vadim Yanitskiy 91652c8dbe main: separate model-specific arguments in help
Change-Id: I9646a45d61153499ad3d580a03d930ed20e23cda
2020-10-24 05:08:42 +07:00
Vadim Yanitskiy 0b6e568d05 main: increase spacing between commands and description
Otherwise it's hard to fit new options with long names.

Change-Id: If9a418545abff6d22602ba07cfd4447f5ace7742
Related: SYS#4910
2020-10-24 05:00:33 +07:00
Pau Espin 22f59cd63a Introduce NM Channel FSM
Change-Id: I288cbfb4730b25a334ef1c3d6b9679d6f1d4cfc5
2020-10-20 13:45:57 +00:00
Pau Espin 7810a91733 Introduce NM Radio Carrier and Baseband Transceiver FSMs
All the Operative State logic to manage a RadioCarrier//BBTransc NM objects is
centralized in these FSM, where other parts of the code simply send
events to it.
This allows keeping state consistent and offloading logic from each bts
backend, since they are only required to submit events now.
The idea in the long run is to also replace other NM objects with
similar FSMs.

This improved logic fixes bug where PHY + RSL link became available before
OPSTART and hence op state changed to Enabled before receiving any OPSTART message.

Change-Id: Ifb249a821c4270918699b6375a72b3a618e8cfbe
2020-10-20 13:45:57 +00:00
Pau Espin ae6e3e8f8b Introduce NM BTS FSM
Change-Id: Iae631bcc7acdf955296b124707e42d5e565af186
2020-10-20 13:45:57 +00:00
Pau Espin 88fe4b079d Introduce NM BTS Site Manager FSM
This fixes old behavior mimicing broken behavior in nanoBTS (according to TS 12.21)
where BTS Site Mgr NM object was announced as Enabled despite no OPSTART
was sent by the BSC.
With this new FSM, BTS SiteManager will be announced as Disabled Offline
during OML startup conversation, instead of Enabled.

The new osmo-bsc OML management FSMs use this change in behavior to find
out whether it should use the old broken management states (without
Offline state, as per nanoBTS) or use the new state transitions (which
allow fixing several race conditions).

Change-Id: Iab2d17c45c9642860cd2d5d523c1baae24502243
2020-10-20 13:45:57 +00:00
Pau Espin 6d117891c9 Change NM Channel availability Dependency->Offline when RadioCarrier becomes enabled
This fix allows osmo-bts to play fine with newer osmo-bsc NM OML FSMs,
which expectes for non-nanoBTS types to follow TS 12.21 guidelines.
Until now, BSC simply waited to received State Event Change Dependency
for each TS and then sent all required commands (Set Chan Attr, Adm
Unlock and Opstart). In newer osmo-bsc FSMs, Opstart is only sent when
in Offline state, so we need to transit to that state. For the above
mentioned reason, since we pass through the Dependency state anyway
after this patch, older osmo-bscs will work correctly too.

Change-Id: Id9e61f8d773e6e6170c68b5b836d276c747d8d69
2020-10-20 13:45:57 +00:00
Harald Welte cf7a7fcebf remove dead oml_router code
We originally wanted to intrdouce an OML router which would permit
external proceses to implement certain OML MOs.  However, that code
was never completed, and all the existing implementation (in three
copies) does is to create a unix domain socket and discard what
is received there.

Change-Id: I7fcbbd5d6b64ddc666ca836dc49abb430be0d5cb
2020-10-19 18:17:36 +02:00
Harald Welte 629824ac14 use osmo_fd_setup() everywhere
Change-Id: I9be55f791a15fae2362dc431dc778b9b9d8db349
2020-10-19 15:06:08 +00:00
Vadim Yanitskiy 64bd96b3f8 vty: make most struct pointers const in show/write commands
Change-Id: Iacc32f7982c150d84ea4df7affa1f9e07806928f
2020-09-28 11:39:04 +07:00
Vadim Yanitskiy c14f1641c6 Constify the 'trx' argument of trx_get_hlayer1() everywhere
Change-Id: I44523d26f2f564932ea95c17b1041d0ca9cc2828
2020-08-03 02:08:14 +07:00
Pau Espin 9b47b27d4f Move gsm_bts code gsm-data.* => bts.*
bts.h refers to struct gsm_bts object, but we still had a bunch of stuff
in bulky gsm_data.* from old days. Let's move stuff where it belongs to
start clean up of gsm_data.

Change-Id: I0a4219e3f64f625ee8b364bf408b8d2bcc8085c5
2020-07-05 18:18:16 +02:00
Pau Espin 8090df2a81 bts_model: Convert bts_model_trx_close() to return asynchronously
Some backends like osmo-bts-trx require exchanging messages like
POWEROFF to close the TRX, and hence need some time. Switch the function
to expect result asynchronously by calling a callback.

This will be used later to wait until all TRX are really powered off
before exiting the process.

Change-Id: I7d76b600fc06e1114b35bf0c2d08eff5bbd1b69a
2020-06-23 14:53:37 +02:00
Pau Espin f5e22703e7 power_ramp: Add support to get callback when ramping process completes
It will be used in forthcoming commits to feed FSM events once the
ramping process completes.

Change-Id: I778dc215cf6055b93658670cc12e78ad2e51f85e
2020-06-18 19:11:55 +02:00
Vadim Yanitskiy 578156b815 Do not mix public and private BTS features, use libosmocore's API
It was a very bad idea to mix "public" BTS features, that are
reported to the BSC via OML, and those features, that are used
locally (and exclusively) in osmo-bts.

Why? At least because we already have the BTS feature manipulation
API in libosmocore, that is used by osmo-bsc, but for some reason
not by osmo-bts. New features added to libosmocore would clash
with the existing "internal" ones like BTS_FEAT_MS_PWR_CTRL_DSP.

So what this change does can be described as follows:

  - remove duplicate definition of the "public" features,
  - use libosmocore's API for the "public" features,
  - separate both "internal" and "public" features:
    - the "public" features continue to live in bitvec,
    - the "internal" features become flags,
    - s/BTS_FEAT/BTS_INTERNAL_FLAG/g.

Change-Id: Icf792d02323bb73e3b8d46384c7890cb1eb4731e
2020-06-11 00:36:21 +07:00
Pau Espin 63920cefa6 Use OSMO_FD_* instead of deprecated BSC_FD_*
New define is available since libosmocore 1.1.0, and we already require
1.3.0, so no need to update dependenices.
Let's change it to avoid people re-using old BSC_FD_READ symbol when
copy-pasting somewhere else.

Change-Id: Id51ccb2c273c5f0fa4986f28bbd69a72d2dbaa0e
2020-05-09 18:59:47 +02:00
Vadim Yanitskiy 40fb4b7614 osmo-bts-{sysmo,oc2g,lc15}: fix segfault on 'dsp-trace-flag'
== How to reproduce?

  phy 0
    instance 0
      dsp-trace-flag error
      dsp-trace-flag debug

== What happens?

  Program received signal SIGSEGV, Segmentation fault.
  0x432dbe64 in strcasecmp () from /lib/libc.so.6
  (gdb)
  (gdb) bt
  #00x432dbe64 in strcasecmp () from /lib/libc.so.6
  #10xb6ed69ec in get_string_value () from /usr/lib/libosmocore.so.12
  #20x0001bcf0 in cfg_phy_dsp_trace_f ()
  #30xb6fc1080 in ?? () from /usr/lib/libosmovty.so.4
  Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Change-Id: I23137930f81bfa8adbb62828f341470c11202b5e
2020-04-26 23:22:25 +07:00
Harald Welte 187f7c8713 fix compilation with gcc-10
/usr/bin/ld: /home/laforge/projects/git/osmo-bts/tests/sysmobts/../../src/osmo-bts-sysmo/tch.c:584: undefined reference to `femtobts_tch_pl_names'
/usr/bin/ld: l1_transp_hw.o:/home/laforge/projects/git/osmo-bts/src/osmo-bts-sysmo/femtobts.h:108: multiple definition of `pdch_msu_size'; main.o:/home/laforge/projects/git/osmo-bts/src/osmo-bts-sysmo/femtobts.h:108: first defined here
/usr/bin/ld: l1_transp_hw.o:/home/laforge/projects/git/osmo-bts/src/osmo-bts-sysmo/femtobts.h:71: multiple definition of `femtobts_l1prim_type'; main.o:/home/laforge/projects/git/osmo-bts/src/osmo-bts-sysmo/femtobts.h:71: first defined here

see also: https://alioth-lists.debian.net/pipermail/debian-mobcom-maintainers/Week-of-Mon-20200413/000651.html

Change-Id: I4a9896153876fcda496365776883827746205f00
2020-04-20 20:09:24 +02:00
Philipp Maier 731683cd62 logging: use only LOGL_NOTICE as defualt loglevel
some of the log categories in logging.c are set to LOGL_INFO or even to
LOGL_DEBUG. This is too verbose. Lets set those categories to
LOGL_NOTICE. Also the BTS manager programs (...bts_mgr.c) use LOGL_INFO
by default. This should be set to LOGL_NOTICE as well

Related: OS#2577
Change-Id: I6e7a635f9b4a93529661dafc591d512d7b7e8c75
2020-04-14 13:20:21 +00:00
Philipp Maier 5184576572 osmo-bts-sysmo: merge measurement data and payload
For osmo-bts-sysmo the MPH INFO MEAS IND indication is still sent
separately. Lets merge the measurement information into the PH DATA

Change-Id: Iffe7865727fbf9bca8eb32a96e8ea05cf718a948
Related: OS#2977
2020-02-17 12:40:07 +01:00
Philipp Maier ac61baed2e Do not depend on pcu_direct flag when populating ph_data_ind
The struct members ber10k, ta_offs_256bits and lqual_cb in ph_data_ind
are only populated when the pcu_direct flag is not set.

The pcu_direct flag is set when the pcu is directly attached to the phy
and all pcu related traffic (pdtch) is handled without sending it through
osmo-bts-sysmo. For those cases osmo_bts_sysmo will not make use of
those struct members, even if they were populated. When the PCU is not
directly attached the data is needed because it is sent through the
pcu_sock to the PCU.

Lets remove the check because it is not required. Also in future patches
where measurement indications and data / tch indicatins are merged the
struct members are also needed to carry the measurement information for
SACCH as well.

Change-Id: Iaa37bb62af4f5eb4b6e684cb754e68d11e6fd676
2020-02-17 12:11:43 +01:00
Pau Espin 52d7eafcea l1_if: Fix strange formatting of Meas info logging
Some use LOGPC, but were used after a LOGP with a trailing newline.
Let's simply add some defines/macros to be able to include it into a
normal LOGP easily insted of having a function.

Change-Id: Ie082b11c9d6d00ff2206184f03f6e3647c3da18c
2020-02-12 14:29:38 +01:00
Vadim Yanitskiy cb69d607c9 osmo-bts-sysmo/Makefile.am: fix: do not overwrite bin_PROGRAMS
src/osmo-bts-sysmo/Makefile.am:25: warning: bin_PROGRAMS was already
				   defined in condition TRUE, which
				   includes condition ENABLE_SYSMOBTS_CALIB
src/osmo-bts-sysmo/Makefile.am:10: ... 'bin_PROGRAMS' previously defined here

Change-Id: Ib2334dccefd507eaaa6d33e58d4c1e029d7fd540
2020-01-21 18:52:08 +07:00
Pau Espin c693067b7e Introduce BTS feature BTS_FEAT_MS_PWR_CTRL_DSP
It indicates whether BTS model supports managing an MS Power Control
Loop over HW/DSP instead of using the software based osmocom algorithm
present in osmo-bts.
osmo-bts-trx own loop implementation is considered to be a "DSP/HW" one
since it acts on lower layers and interferes with osmocom algorithm
since it controls the same end variable "lchan->ms_power_ctrl.current",
this way we make sure both aren't enabled at the same time.
Old behavior in kept: if common upper-layer algo is not enabled
explicitly in VTY (ms-power-control osmo) and bts-trx specific lower
layer algo is neither enabled (osmotrx ms-power-loop <xyz>), then no
power control is done at all.

Related: OS#1851
Change-Id: I49706926b1e962b18791174627bc3cc0cd0cd9d5
2019-11-14 20:02:45 +01:00
Martin Hauke fc5f20a713 Rename variable: CALIB_SUCESS -> CALIB_SUCCESS
Correct the name of this variable.

Change-Id: I75cb6404d772b79933d1d9d694abf8eff1fad020
2019-10-17 08:05:35 +00:00
Martin Hauke b378fccef1 Fix common misspellings and typos
Change-Id: I403b9029f57fec3fdec2c1e2cbeac0f6eab53f24
2019-10-17 08:05:35 +00:00
Oliver Smith 5fee4d1ff5 log: set L1 SAPI log context
Add a new common L1 SAPI enum, to unify all the BTS specific SAPIs.
Translate to this enum, and set the context for uplink messages in
each BTS specific implementation.

Set the context for downlink messages in the common l1sap code, by
converting the osmo_phsap_prim back to the SAPI value (mostly looking at
chan_nr). The new functions for doing this conversion,
get_common_sapi_by_trx_prim() and get_common_sapi_ph_data(), are based
on the existing to_gsmtap() and gsmtap_ph_data() functions.

Note that we can't set the uplink SAPI context in the common code,
because then we can't set it as early as possible. In this patch, the
SAPI context is set for the PHYs where the SAPI is readily available.
With additional conversion from the RSL channel, the SAPI context could
be set for osmo-bts-trx in a follow up patch.

Related: OS#2356
Depends: (libosmocore) I814cb3328d99faca9220adb5a80ffb934f219d7d
Change-Id: I6b7bb2e1d61502b61214f854a4ec5cbb7267545b
2019-10-11 10:46:02 +00:00
Pau Espin b4d8f5cf13 Remove undefined param passed to {logging,osmo_stats}_vty_add_cmds
Since March 15th 2017, libosmocore API logging_vty_add_cmds() had its
parameter removed (c65c5b4ea075ef6cef11fff9442ae0b15c1d6af7). However,
definition in C file doesn't contain "(void)", which means number of
parameters is undefined and thus compiler doesn't complain. Let's remove
parameters from all callers before enforcing "(void)" on it.
API osmo_stats_vty_add_cmds never had a param list but has seem problem
(no "void"), so some users decided to pass a parameter to it.

Change-Id: Ia4d1a7914308d1481fe31fe0986265ead339e61e
Related: OS#4138
2019-08-05 16:13:09 +02:00
Vadim Yanitskiy b777c0f3ec Move Access Burst link quality handling to L1SAP
Change-Id: I893ec9c6c2ebad71ea68b2dc5f9f5094dfc43b78
Depends: (libosmocore) Ie2a66ebd040b61d6daf49e04bf8a84d3d64764ee
2019-07-21 21:55:51 +07:00
Vadim Yanitskiy 9649a42d5a Clarify and refactor link quality (C/I) handling
The radio link quality is defined by C/I (Carrier-to-Interference
ratio), which is computed from the training sequence of each
received burst, by comparing the "ideal" training sequence with
the actual (received) one.

Link quality measurements are used by L1SAP to filter out "ghost"
Access Bursts, and by the link quality adaptation algorithms. One
can define minimum link quality values using the VTY interface.

On the VTY interface we expect integer C/I values in centiBels
(cB, 10e-2 B), while the internal structures are using float
values in deciBels (dB, 10e-1 B). Some PHYs (sysmo, octphy,
oc2g, and litecell15) expose C/I measurements in deciBels,
while on the L1SAP interface we finally send then in centiBels.

Let's avoid this confusion and stick to a single format, that
will be used by the internal logic of OsmoBTS - integer values
(int16_t) in centiBels. This will give us the range of:

  -32768  .. 32767  centiBels, or
  -3276.8 .. 3276.7 deciBels,

which is certainly sufficient.

Change-Id: If624d6fdc0270e6813af8700d95f1345903c8a01
2019-07-21 13:51:57 +00:00
Harald Welte db6c786350 sysmo/l1_if.c: Annotate fall-through in switch statement
Change-Id: I72937e087288fe7681fafe4099e49849657924bd
Closes: CID#162019
2019-07-21 10:30:32 +00:00
Vadim Yanitskiy 2dec9fff1c Use #define RSL_CHAN_RACH for RSL Channel Number of RACH
Change-Id: I7f54fccdae6799e5f4d956a101e11c2d6f998546
2019-06-05 21:06:10 +07:00
Neels Hofmeyr 347fea69a0 lc15,sysmo,oc2g: fix dsp-trace-flag command
Remove the '~' from '|= flag', it is plain wrong.

This affects the correct parsing of DSP trace flags from the config
file only.  The bug is not present in the interactive VTY command
at runtime.

Change-Id: I915971f49642967c969f5dd475e8faa960ef3960
2019-05-28 19:55:48 +02:00
Harald Welte d7be09caf8 sysmo: Fix "nominal power" / BS power display in VTY
The function get_p_max_out_mdBm() returns a value in 1/1000th of dBm,
"milli-dBm", while trx->nominal_power is only whole dBm.  We were
missing the required divider of 1000 ever since Change-Id
Ieff75d5becaa80a2097b6e744c75c2d16259c9a4 was merged in February 2017.

The good news is that this really only affected the VTY output and
not any actual operational aspect of the system.

Change-Id: If92d0b15c48dafc63776b82c7ff5f3c2b3505f68
Closes: SYS#4570
2019-05-22 22:38:38 +02:00
Vadim Yanitskiy 5b1c1b2184 osmo-bts-sysmo: fix: indicate BTS_FEAT_CBCH support on OML
It seems osmo-bts-sysmo does support CBCH (Cell Broadcast), but
for some reason it doesn't report BTS_FEAT_CBCH to the BSC.

Change-Id: I42dd3f84c44c210d9255e17153372bf252f897a1
2019-05-10 03:48:04 +07:00
Pau Espin 8564ececa5 sysmobts_mgr: Add support for gpsd < 2.96
This allows running sysmobts-mgr on systems with old gpsd releases
(which may have other software depending on such old release).

GPSD_API_MAJOR_VERSION define was first added in gpsd 2.39, before that
it didn't exist (but this code is known to work against 2.38).

GPSD_API_MAJOR_VERSION == 5 was set in version 2.96.

Related gpsd commits:
3771dba081bd1175adab6096d7b6270d3822aaa1
e69bcb6b01af6b25c6a525fb1961b92ac04f5213

Related: SYS#4290
Change-Id: If3c35021a020a61d5fa3cde5eebcd09908db822b
2018-12-18 21:40:00 +01:00
Pau Espin 17ffb08de0 sysmobts_mgr: Prepare code for gpsd < 2.96 support
API prior to that version allocates the pointer internally. Let's change
current code to always use a pointer and in current supported code (gpsd
>= 2.96) point it to a user-allocated struct.

Follow-up patch will introduce necessary ifdefs to support older gpsd.

Change-Id: Iaeb5ac527cc3e58168027021d0f60afa93d1fb6f
2018-12-18 21:40:00 +01:00
Pau Espin e3cb8715f5 bts_model: Allow TS connect to be processed asynchronously
This commit doesn't change internal logic of any model, only the API to
be able to return result of connect TS asyncrhonously since some models
(like osmo-bts-trx) require some time to process the result. This way
PDCH ACT/DEACT (N)ACK can be sent once the result of this long process
is known. For instance, nowadays in osmo-bts-trx we PDCH (DE)ACT ACK
before getting the result from SETSLOT on the TRX iface.

With this new API, bts_model_ts_connect doesn't return any value
synchronously. Instead, it is expected to always end up calling
cb_ts_connected with the return code from the TS activation process. 0
is considered a successs, while any other value is considered an error.

Change-Id: Ie073a4397dd2f1a691968d12b15b8b42f1e1b0cf
2018-11-26 14:08:14 +01:00
Vadim Yanitskiy 70eb683622 Fix deprecated gsm_arfcn2band(), use gsm_arfcn2band_rc()
Change-Id: I45aae70f4bc3f4f85d267dafb757debdef1bb7d7
2018-11-22 15:30:46 +07:00