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At the time the phy link / phy instance level VTY configuration
commands are parsed, we did not yet call l1if_open() and thus
pinst->u.{lc15,sysmobts}.hdl == NULL.
PHY or PHY instance specific configuration must thus be stored inside
the phy_link or phy_instance itself, and not inside the (not yet
existing) handle.
We solve this by moving around some parameters:
* clk_use_eeprom/clk_cal/clk_src/calib_path get replicated in
phy_instance
* min_qual_{rach,norm} are moved into the generic part (which means
that osmo-bts-octphy and osmo-bts-trx should also implement them)
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Due to the changes introduced by the phy_link API, it's not easy to set
the default DSP trace flags via a command line argument anymore. We now
rather introduce a persitent VTY configuration command, by which the
default DSP tracing configuration can be set (for each PHY).
The persistent trace flags are stored in the phy_instance, while the
current operational run-time flags are in fl1h->phy_instance.
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This removes a lot of copy+paste duplication between different BTS
models.
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This is one step in making the main() functions of different
BTS models more similar, so we can share one code rather than multiple
copies of it.
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by using a talloc pool, we avoid having to go back to the libc
malloc pool all the time. The msgb allocations and libortp allocations
happen quite frequently during processing and show up as one of the
high priority items in osmo-bts profiles on sysmoBTS with 14 concurrent
TCH/H calls (highest load scenario).
talloc still consumes significant CPU, this is mostly due to the
zero-initialization of all the associated buffers. Strictly speaking
we shouldn't need this, but any change there would require lots of
testing, as there might be hidden assumptions in the code?
In some percentage of cases, talloc still seems to fall back on malloc
for msgb allocations, which is currently a bit of a mystery. The pools
certainly are large enough, talloc_reprt() rarely reports more than a
few tens of kilobytes used by the msgb pool.
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Instead of limiting the number of TRX at VTY to the actual number of
supported TRX, VTY allows to configure any possible number of TRX. If a
TRX is configured, which is not supported by BTS model, an error message is
returned, which states that the given TRX is not supported.
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sysmocom-bts model shuts down on link loss, but other models may not want
this, so shutdown is moved tor bts_model_abis_close of osmo-bts-sysmo.
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We do not need to have these variables anymore. Just remove them.
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The service file will prevent a re-launch of the sysmobts.service
in case the main process exits with '1'. In case the ethernet is
not available yet the routine would fail and the sysmobts process
will not be restarted.
unable to connect/bind socket: Network is unreachable
<000f> input/ipaccess.c:885 cannot open OML BTS link: Network is unreachable
unable to connect to BSC
root@sysmobts-v2:~# echo $?
2
Fixes: SYS#736
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This sysmobts specific control interface allows for clock calibration
from an external program by means of the "trx.0.clock-info" and
"trx.0.clock-correction" values.
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... which is now defined in libosmocore
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Using this control interface, an external program can request
attentuation of the transmitter for thermal management reasons. The
external application doesn't have to know anthing about the actual
transmit power, but it can just configure a certian value of milli-dB
(1/10000 bel) and update (increase/decrease) that value depending on
the thermal environment.
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In order to support transmit power reduction by thermal management
as well as the variety of new internal / external PA configurations
of BTSs, we need a slightly more complex system.
Also, as at high power a single dB can be quite a big difference,
we are now doing all computations in milli-dB(m), i.e. 1/10000 bel.
Ramping is now used both for up and down ramping, as that is useful in
cases where you want to gracefully shut down a cell by shrinking its
radius, gradually handing over subscribers to neighboring cells.
Furthermore, this code is becoming part of the 'common' codebase, as it
is not really specific to how sysmobts is working.
The user can specify a single aggregate value for external system
gain/attenuation. Let's say you have 1dB loss of antenna cable, so you
can put that as 'user-gain -1' into the config, which means that a
'transmit power of 20dBm' will be compensatet for that and the TRX is
instructed to output 21dBm to compensate the cable loss. Similarly,
external PAs can be described by a positive user-gain.
One of the next steps will be to communicate those values and the
nominal power capability of the specific BTS to the BSC, so the BSC will
automatically show correct signal levels in the VTY and log files.
The code includes provisions for future extensions regarding
* an external and an internal PA with calibration tables
* a thermal attenuation setting to be controlled by the site manager
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I wondered if I should use the 'abstract namespace' feature
of Linux but just put the router into /var/run/ to make it
work out of the box. Change the signature to provide a sane
error message.
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Begin with the basics of a OML Router. This is currently only
capable of accepting a connection and read messages but it will
evolve into a router in multiple stages. The first usage will
be by the sysmobts-mgr. An OML Error Indication will be sent by
the sysmobts-mgr and it will be forwarded to the BSC. In the
second step we will set a relative power reduction from the
sysmobts-mgr.
In the long-term this code will be used to communicate with a
second TRX.
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For systems with a bigger PA enabling the full output power at
once might draw more current than a power supply can provide. This
code will step up the output power in smaller steps to avoid this
situation.
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Harald is right and that the code is generally not ready
for inclusion. I fell victim of trying to finish it while
the code is not ready at all. It is better to re-introduce
the patches in a smaller and more tested way.
The right way would have been a branch were ready things
are split-off the main/wip commit until everything is ready.
Revert "sysmobts: Have a common prefix for the enum"
This reverts commit 44980347f308fe5bbe48a933dbc81b82b53d310a.
Revert "utils: Used the enum manuf_type_id in the parameter of add_manufacturer_id_label"
This reverts commit 7d36e5ed46b630203167fc9d5d28e0087fdbd394.
Revert "utils: Classify the OML message using the return type"
This reverts commit afee0b7929a00500f9c204f3bc7e12f72451e832.
Revert "sysmobts: Do not access out of bound string"
This reverts commit f5f41e805195c8c3294a9e6a68b10f975fbabbbd.
Revert "sysmobts: Separate IPA and OML check into two methods"
This reverts commit 13a224063dfcee0be529fba1c8fb9be9c1fb261e.
Revert "screenrc: osmobts-mgr now needs a config file"
This reverts commit 0a1699ff8a5462c167c24e8b28186abb26331698.
Revert "make sure osmobts-mgr.cfg file is included in tarballs"
This reverts commit 14c60b425f8146f6a392d2d3de2979c817cd975e.
Revert "sysmobts-mgr: Add VTY support for configuring it"
This reverts commit c5fedd24c96a4ef6d7a0c0ed3c70d6ef0abd5c17.
Revert "sysmobts: Add beginnings of an OML router and create Failure Messages in the sysmobts-manager"
This reverts commit c6ab90b27006ff2d1fdfb0b1d7fc01e1dd4a696d.
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Rely on optarg pointing to an address that will be valid for
the run of the entire application.
Fixes: CID 1206578
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I have split the function check_oml_msg, in two functions. One for
checking if the ipa header is well-formed and in check_oml_msg,
Signed-off-by: Alvaro Neira Ayuso <anayuso@sysmocom.de>
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This reverts commit c64d42573894d8295b58b268a64541c914b69bcd.
There are unfrtunately still too many problems with this patch to be
merged at this point.
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Make the sysmobts-mgr send a manufacturer O&M message with the power
reduction we want the sysmobts to apply. The sysmobts will handle
this message and set the new tx output power. An ACK/NACK will be
send as a response to the power reduction.
Signed-off-by: Alvaro Neira Ayuso <anayuso@sysmocom.de>
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sysmobts-manager
Make the sysmobts listen for OML messages on a Unix Domain Socket.
Messages passing a sanity check will be forwarded to the BSC.
In case the sysmobts-mgr detects a temperature above or below
temperature threshold an OML failure message will be sent
to the BTS.
[moved confinfo into the #ifdef BUILD_SBTS2050]
Signed-off-by: Alvaro Neira Ayuso <anayuso@sysmocom.de>
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Initialize the libosmo-abis VTY nodes more early so we can parse
the config file that was created by "write". Introduce abis_init
to initialize the libosmo-abis and modify abis_open to re-use an
existing line. Update the comments. This has only been tried with
the sysmobts-remote on x86. A TCP connection is opened toward the
configured BSC.
Fixes: SYS#285
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Only restart in case of a crash or the exit(42) when the OML/RSL
link is going down.
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There are existing deployments where the EEPROM either contains a
wrong value and/or the kernel can not be updated to support the
different EEPROM of revD. Revert to the old behavior that if no
nominal can be derived from the model_nr we assume that it is 23.
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Currently the LEDs are being accessed directly from within the
l1_if.c file. So the handling of rf mute and activate/deactivate both
access LED_RF_ACTIVE directly. This may lead to an inconsistent LED
status.
This patch replaces these calls to sysmobts_led_set() by an abstract
equivalent bts_update_status(), that uses a set of independant status
ids. The associated values can than be combined into a visible LED
status. Currently LED_RF_ACTIVE is on iff BTS_STATUS_RF_ACTIVE is set
and BTS_STATUS_RF_MUTE is not set.
Sponsored-by: On-Waves ehf
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... no need for that
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This enables the use of up to 5W for each TRX in a sysmoBTS 2050.
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libosmoabis has a BTS-side implementation of the IPA protocol for years,
and osmo-bts should have used that all the time. Unfortunately it had
its own local hack, this patch is migrating to the libosmocore
implementation.
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By default read the clock calibration from the EEPROM. It is
still possible to set it using the cli.
Signed-off-by: Nicolas J. Bouliane <nicolas.bouliane@nutaq.com>
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The latency to respond to a PH-READY_TO_SEND.ind may not be higher
than 18ms. Currently we are using nice to increase our priority but
for a heavily loaded cell this is not enough. Add an option to enable
realtime scheduling and use it in the screenrc.
Linux offers two realtime scheduling classes these are SCHED_FIFO
and SCHED_RR. For SCHED_FIFO the process is running as long as possible
(potentially taking all the CPU and never yielding it), for SCHED_RR
the process can still be pre-empted at the end of the timeslice.
Using SCHED_RR appears to be the more safe option as a run-a-way
sysmobts process will not be able to take all the CPU time.
For a very loaded cell we also require to use readv/writev to allow
writing multiple primitives in one syscall.
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This was found and debugged by Sylvain. The BTS will always support
A5/0 so we do not keep track of that, the first bit of the flags is
used for A5/1, second for A5/2... but for RSL there is an offset to
go from RSL to A5(x). Add a testcase and change the code.
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Use "-P -M" to enable PCU and direct access.
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A special command line option "-P" is used to enable socket interface
and signal available GPRS MO object to BSC.
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We previously used to send the bogus string "0815" which was a hack
from early development time, but is obviously not a generally useful
idea.
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