Replace python 2 code using pychart to draw a graph in
osmux-reference.adoc with the generated svg file. The upstream of
pychart is dead, there is no python 3 version, and python 2 is EOL at
the end of 2019.
This is the only time we ever made use of pychart in osmo-gsm-manuals,
so with this change, we can just drop the dependency.
I've generated the chart by saving the python code in chart.py, then:
$ ./chart.py --format=svg --font-size=3 > chart.svg
Related: OS#2819, OS#4193
Depends: osmo-ci I754b133d77743582bd84c33c74ecc9eb9ca4c0ef
Change-Id: I36b721f895caee9766528e14d854b6aa2a2fac85
After sending of NM_MT_IPACC_RSL_CONNECT message, we start a timer,
and stop it on receipt of NM_MT_IPACC_RSL_CONNECT_{ACK,NACK}. When
running a multi-trx setup, one can see the following warnings:
DRSL NOTICE abis_nm.c:2852 (bts=0,trx=1) RSL connection request timed out
DRSL NOTICE abis_nm.c:2852 (bts=0,trx=2) RSL connection request timed out
even despite NM_MT_IPACC_RSL_CONNECT is actually being acknowledged.
The problem is in abis_nm_rx_ipacc(): we cannot just use sign_link->trx,
because the message itself was received over the OML link, so this
pointer always gives us C0/TRX0. Instead, we must find a TRX by its
number from the FOH header using gsm_bts_trx_by_nr().
Change-Id: Ib4b9a198da11c88a51cfa78ffb7e7235a6365ef4
This way we can avoid the runtime overhead of checking whether or not
it is initialized over and over again. It also brings this code more
in line with other users of osmo_fsm_register().
Change-Id: I3c7220491cf6ffb1361e7259c0344df64a013a0a
Since osmo-bsc uses the MGCP client FSMs, it is required to enable this new
feature to guarantee safe operation. The issue is described in detail in commit
logs linked below.
Depends: Ief4dba9ea587c9b4aea69993e965fbb20fb80e78 (libosmocore),
I0adc13a1a998e953b6c850efa2761350dd07e03a (libosmocore)
Related: I7df2e9202b04e7ca7366bb0a8ec53cf3bb14faf3 (osmo-mgw)
Change-Id: Ib7fce7b7d54dfb87af97544796680919e5929a50
Lots of times, the MS power class is unknown until after the first
channel has been activated, at which point the MS power class is
received in messages such as LU update or CM Service Requet.
Since the MS Power level is sent upon CHAN ACT, the only way to
communicate the change of maximum MS Power (based on MS power class)
after CHAN ACT is to send a MS Power Control msg. Let's do that.
Related: OS#4244
Change-Id: I3d6b75578e5cb9b2ad474a0ad01362d846ebe135
As can be seen from include/osmocom/bsc/gsm_data.h:
- pchan_from_config - channel configuration from the VTY/config
(can be changed from the VTY at runtime, should not affect
the existing RSL/OML connections);
- pchan_on_init - channel configuration after the OML link is
established (pchan_from_config is copied here);
- pchan_is - the *actual* channel configuration currently active.
Since we call bootstrap_bts() during the initialization, even before
establishing any OML/RSL connections, neither pchan_on_init nor
pchan_is can be used. Let's use pchan_from_config instead.
This change fixes the problem discovered by @mqng2 and reported
together with https://gerrit.osmocom.org/c/osmo-bsc/+/15909:
CCCH_CONF in System Information Type 3 does not reflect the
actual channel configuration, and always indicates a single
CCCH combined with SDCCH. This also misleads the lchan
allocation algorithm during the MO connection establishment.
Change-Id: I8f9d7aa27f24b55732a4de933bc834ed930806fd
Do not count the number of additional CCCHs if TS0 is using combined
channel configuration (CCCH+SDCCH4), because they are only allowed
if TS0 is not combined with SDCCH.
Get rid of the 'switch' statement using the following formula:
CCCH_CONFIG = (N << 1)
where N is the number of additional CCCHs.
Change-Id: I1430500999389e9b30e55ea89a8a5ea5071f7957
As per 3GPP TS 45.002, section 3.3.2.3, and table 3 of clause 7,
the following limitations apply mapping of CCCH/BCCH channels:
- TS0/C0 shall be configured as CCCH/BCCH (optionally combined);
- combined CCCH (CCCH+SDCCH4) can only be used on TS0;
- additional CCCHs can be on TS2, TS4, and TS6;
- additional CCCHs are not allowed if TS0 is combined.
Let's make sure that OsmoBSC is properly configured before starring.
Change-Id: I758ef80f7884ba35cdf59d671ee30222ffb9d68b
Since MS Power Param IE content is operator dependant, it's currently
not known which kind of content non-osmocom BTS support/allow, so let's
avod possibily breaking those BTS until each BTS has been checked
separately.
Related: OS#1622
Change-Id: If44121222042bdac06c2a5e70f7b35a88b00b27c
Further accesses will be addter in forthcoming commit, so let's first
store the pointers in variables to clean up the code.
Change-Id: Ie5ea0f44dfb5731cab7e8e5a3dd3d791ee703df7
TS 48.058 sec 8.4.1 CHANNEL ACTIVATION and state:
"""
The BS and MS Power Parameters elements are included to indicate that BS
and/or MS power control is to be performed by BTS. The maximum power to
be used is indicated in the BS and MS Power elements respectively.
"""
Since we always want the BTS to do autonomous MS power control, let's
add it.
Related: OS#1622
Change-Id: Icaaa61b363b093f00b6653c3df64d3e66583b9f8
NULL or 0.0.0.0 should actually not be used upon connect() calls.
Whoever, it worked so far because osmo_sock_init2() calls getaddrinfo()
on it which does the 0.0.0.0->127.0.0.1 translation.
osmo-msc already passed 127.0.0.1 as default address, so let's do the
same here.
Change-Id: Ib0d33c66faab78e609742638425cb8a0c382406f
TTCN3 BSC_Tests.TC_ms_rel_ind_does_not_cause_bssmap_reset seems to
sometimes run into a race condition on the order of messages received by
osmo-bsc comming from MSC and BTS.
Usual (expected) scenario):
BTS->BSC EST IND
BSC->MSC CL3 Info
BSC<-MSC CC
BTS->BSC REL IND
BTS<-BSC DEACT SACCH
BSC->MSC ClearRequest
BSC<-MSC ClearCommand
BSC->MSC ClearComplete
BTS<-BSC RF Chan Release
BTS->BSC RF Chan Release ACK
Sometimes CC message and REL IND message are received swapped (because they
are sent by different components asynchronously in TTCN3).
As a result, osmo-bsc was failing to go into CLEARING state and was
unable to send the ClearRequest because CC was still not received.
So the idea is to stay in WAIT_CC until CC is received, then check if
the lchan was dropped and in that case go into clearing state.
Change-Id: Id1abf5ee44c60925b478123409f26bd29006202b
In addition to transmission of the ETWS Primary Notification via all
dedicated channels, we also need to send it to the BTS for transmission
via PCH (P1 Rest Octets) and for forwarding to PCU for PACCH
transmission.
Change-Id: I7e45b0373458a4348b12b92dd92861062532548b
Function fsm_reset_ack_timeout_cb() could be called directly from within
a_reset_alloc(), but it's still desirable to deferr the BSSMAP RESET to
be sent asynchronously by the timer upon next main loop step as soon as
possible, so whole process is already configured properly.
1ms needs to be set instead of 0 (immediate asynchronous) because value
0 actually disables the timer.
As a result, moving the state_chg() after the msc->a.reset_fsm
assignment is not really needed, but still makes it more clear that the
pointer will be set upon call of the timer callback.
Related: OS#4188
Change-Id: I68d76a4050d4dec7d53b0031d67e0dd35ddd8764
As soon as we have received an ETWS primary notification message from
the CBC, we should transmit it as "RR Application Information" to all
dedicated channels.
Change-Id: I913d0237cffdcb95037da8489acef5f32a7fc02e
SCCPlite is long supported (again) by osmo-bsc, let's remove the
outdated pointers to osmo-bsc-sccplite.
Change-Id: Ia3d831aca7c3c7ef9f257e974faf6e8e360c59f5
This adds code to handle CBSP (Cell Broadcast Service Protocol)
from the CBC (Cell Broadcast Centre), as well as BSC-internal data
structures for scheduling the various SMSCB on the CBCH of each BTS.
There are currently one known shortcoming in the code: We don't yet
verify if keepalives are received within repetition period.
Change-Id: Ia0a0de862a104d0f447a5d6e56c7c83981b825c7
When osmo-bsc receives a paging response via the A-bis interface it
tries to find the MSC which is in charge for the paging. This is due to
the fact that osmo-bsc supports multiple msc connections, which is not
specified by 3gpp specs.
In an MT-CSFB call the MSC pages the UE via the SGs interface. Then the
UE falls back to 2G. It then reports back as MS on the A-Bis interface
with the paging response directly. In those cases osmo-bsc will not be
able to determine an MSC in charge, so we will forward the paging
response to the first configured MSC.
Change-Id: I7f091ed1bbc2afe12656e42031e122144eeb6826
Related: SYS#4624
If lchan_select_by_type() fails to find a suitable logical channel,
it would print a message using LOGL_ERROR. This can happen if all
logical channels of the requested type are busy, thus it is not a
error. Let's use LOGL_NOTICE for that.
Change-Id: I9b45852116253e5237b779a91bed8b800758360e
The LOGPC() is usually used for continuation when printing complex
logging messages (e.g. where using format string is not enough).
In this case, nothing is being printed before calling LOGPC(), so
the logging messages appear without the meta info (time-stamp,
level, category, etc.), for example:
BTS 0 reported connected PCU version 0.7.0.1-2585-dirty
Change-Id: I868633ad3e50f2cb3ebfb2c566d16c4710f17563
Fix neighbor config to match OsmoBSC manual: implement the plan for neighbor
configuration that was so far only described in the manual without actually
being in operation.
This first allows re-using ARFCN+BSIC pairs in and across BSS.
So far the handover_start() code always looked for handover target cells across
*all* local cells, even if they were not listed as neighbors to a source cell.
Imply all cells as neighbors only as long as there are no explicit neighbors
configured. As soon as the first 'neighbor' line appears in a 'bts' config,
only the listed neighbors are regarded as handover target cells. (The
'neighbor-list' commands are not related to this, only the relatively new
'neighbor (bts|lac|cgi|...)' commands affect actual handover procedures.)
TTCN3 tests TC_ho_neighbor_config_1 thru _7 play through the various aspects of
neighbor configuration: both the legacy implicit all-cells-are-neighbors as
well as allowing only explicit neighbors by config.
Related: OS#4056
Related: osmo-ttcn3-hacks Ia4ba0e75abd3d45a3422b2525e5f938cdc5a04cc
Change-Id: I29bca59ab232eddc74e0d4698efb9c9992443983
This is required for an upcoming TTCN3 test that plays through various neighbor
configurations.
Related: OS#4056
Ia4ba0e75abd3d45a3422b2525e5f938cdc5a04cc (osmo-ttcn3-hacks)
Change-Id: I8623ab581639e9f8af6a9ff1eca990518d1b1211
The struct member struct bsc_msc_data->is_authenticated is set to true
permanently. This is a leftover from the sccplite implementation and can
be removed now.
Change-Id: I966a48b383c85345c92c9a1fec791150e96cd7b9
Related: OS#3112
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.
Change-Id: Ic3c578347864fa225feb6d2dbe14798b9c19ace0
Related: OS#4138
When we add an EARFCN to to the SI2quater struct we do not add Serving
Cell Priority Parameters. This essentially causes to MS to ignore the
EARFCN because it is still undefined under which conditions the MS
should change to LTE.
Related: SYS#4510
Change-Id: I7eaf7de4386fe8aea404e8a187d8a1f5ed596ead
There is unfortunately no way to suppres this witha pragma,
and gcc 9 uncovers quite a few new instaces with enabled LTO that can't/won't be fixed
Related: OS#4123
Change-Id: I571a85b6ea53af7661248afd84e61cf34b7b5641
It's quite ugly to have manual "bts=%d" printf-statements all over
the BSC code. Let's change this to use shared logging helper functions
all over the place, whenever we need to log something related to one
BTS or one TRX.
This can also help us as the first step to later add alternative logging
of BTS identities, e.g. by printing the Cell Global Identifier or
LAC+CI, or even a human-readable/vty-defined 'name' of the BTS, rather
than its numeric bts number. With this change in place, we can
introduce such changes at a single location in the code.
Change-Id: I4a7814d164384eecfb6913c31802cf2faead6e6c
Oliver Smith
Harald Welte
Vadim Yanitskiy
Pau Espin
Martin Hauke
Philipp Maier
Eric Wild