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The TS 08.58 9.3.31 / 9.3.32 IEs are unfortunately encoded in a
manufacturer-dependent way. This is why we need to add an encoding
function to the bts model. Currently we only implement it for the
Abis/IP type BTSs like nanobts and OsmoBTS.
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The same radio link timeout value is used for BTS and MS side.
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In case a BTS is dropped, iterate over the list of BTS and check
if a dependency is now missing and then drop the BTS. This check
could lead to check of 256*256 checks (e.g. all BTS on each other
in the chain and the master is being dropped). The performance
aspect of it doesn't matter for our usecase. We expect to have
pairs of BTS right now.
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E.g. for the sysmoBTS2050 we have the requirement that the first
board connects before the second due clocking. The easiest point
to enforce this is the BSC. Add a simple bitmask based system to
allow to express dependencies for IP based systems.
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In case a BTS is being bootstrapped and one TS can not be
activated prevent the whole BTS from coming up.
When the OML activation is not being done the rest of the BSC
code still assumes these logical channel(s) to be available
and one will see channel activation issues that might be hard
to debug.
Instead of having a half-configured system up and running,
keep the BTS offline.
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... which happened during recent migration of IPA functionality from
libosmo-abis into libosmocore.
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We introduce a new feature indicating if the given BTS model
supports a TSC that is different from the BCC (lower 3 bits of BSIC).
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It was possible that the wrong NSEI information was sent to the
BTS. This is because patch_nm_tables is not called before sending
the data to the BTS. This will break when two BTS connect more or
less at the same time.
Stop using the arrays directly and instead introduce a method
that will patch the table and return the data and length. This
makes sure that all users patch the table before we send the
data to the BTS.
I bootstrapped a sysmoBTS and I can bring up rsl. The device is
running with a dummy load so I couldn't do more verification.
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In case the specified trx number is not configured, do not crash
but return NULL from the function. The libosmo-abis library should
close the connection for us then.
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Assume that there is a bsc_gsmnet and modify the ipaccess-config to
provide this symbol. If a bsc_gsmmnet is not available when linked
the linker will complain and fail.
E.g. give an error like this:
../../src/libbsc/libbsc.a(bts_ipaccess_nanobts.o): In function `ipaccess_sign_link_up':
src/libbsc/bts_ipaccess_nanobts.c:550: undefined reference to `bsc_gsmnet'
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Use the is_ipaccess_bts method to check if this is either is
nanoBTS or sysmoBTS. The sysmobts type can now be used to bootstrap
a bts.
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Make sure that the bts_ipa_nm_sig_cb is only installed once. In
a nanoBTS + sysmoBTS network the _start method will be called
for each mode leading to the handler being registered twice.
Make sure that there is only one handler registered by unregistering
a previously installed handler. The osmo_signal_unregister_handler
will remove 0 or 1 handlers per invocation and we only add one
handler in this file so it is always balanced.
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The nanoBTS code is trying to find a struct gsm_bts based on
the ipaccess_gsmnet and the ipaccess_unit data. The pointer is
not initialized in the case of a sysmoBTS leading to a classic
NULL pointer dereference.
Move the feature init into the _init method. This way we can
re-use the start code of the nanoBTS. This ensures that the
ipaccess_gsmnet pointer is properly initialized and that the
signal handlers are installed.
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This patch adds a new VTY command "ip.access rsl-ip A.B.C.D" at the
BTS level. If you set this IP address, the BTS will be instructed to
establish the RSL link to the indiciated IP address, rather than using
the same as for the OML link (default).
Use "ip.access rsl-ip 0" to disable the feature.
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In order to keep mobile at PACCH as long as possible the timer T3192 is
set to 1500ms. This reduces the probablity of long lasting assignment
process on CCCH for subsequent downlink TBFs.
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so far, osmo-bts/sysmobts used to be entered as "sysmobts" type in the
configuration file. However, there are some differences in the
protocol/behaviour and we should reflect that by a new BTS plugin (with
lots of code reuse from the nanobts driver).
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This must have been obsoleted by the move to libosmo-abis.
GCC warning:
bts_ipaccess_nanobts.c: In function ‘ipaccess_drop_oml’:
bts_ipaccess_nanobts.c:509:21: warning: variable ‘line’ set but not used [-Wunused-but-set-variable]
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The NVC never goes to OFF LINE but only to DEPENDENCY (because of
missing attributes).
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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This is a big patch that ports openBSC over libosmo-abis.
Sorry, the changes that are included here are all dependent
of libosmo-abis, splitting them into smaller pieces would
leave the repository in some intermediate state, which is
not desired.
The main changes are:
- The directory libabis/ has been removed as it now lives in
libosmo-abis.
- new configuration file format for nanoBTS and HSL femto, we
need to define the virtual e1_line and attach it to the OML
link.
- all the existing BTS drivers (nanoBTS, hsl femto, Nokia site,
BS11 and rbs2000) now use the new libosmo-abis framework.
- use r232 input driver available in libosmo-abis for bs11_config.
- use ipa_msg_recv instead of old ipaccess_read_msg function.
- delete definition of gsm_e1_subslot and input_signal_data.
These structures now lives in libosmo-abis.
Most of this patch are deletions of libabis/ which has been
moved to libosmo-abis.
This patch also modifies openBSC to use all the new definitions
available in libosmocore and libosmo-abis. In order to do that,
we have replaced the following:
- DINP, DMI, DMIB and DMUX by their respective DL* correspondences.
- SS_GLOBAL by SS_L_GLOBAL
- SS_INPUT by SS_L_INPUT
- S_GLOBAL_SHUTDOWN by S_L_GLOBAL_SHUTDOWN
- SS_INPUT by SS_L_INPUT
- S_INP_* by S_L_INP_* sub-signals
- E1INP_NODE by L_E1INP_NODE vty node
This patch has been tested with:
- one nanoBTS
- the HSL femto with the examples available under libosmo-abis
- BS11 with both dahdi and misdn drivers.
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This patch modifies openBSC code to use msg->dst which stores the
pointer to the signalling link structure instead of the pointer to
the transceiver structure.
This patch prepares the introduction of libosmo-abis.
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This reverts commit 8b65ab9d9133efe53a058733d492ac0595040fb4, which
should never have been committed to master. In fact, it is not even
needed anymore with recent osmo-bts code.
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Do not commit this to master. It disables a non-standard IE in the BTS
attributes.
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... as a common wrapper around nm_attr and nm_state
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The daemons set up nanoBTS and HSL femto sockets by default, ie. the
three sockets to support these two drivers are open even if we have
no BTS of that kind.
This patch enables on-demand socket creation, ie. we only enable them
if we have one BTS at least that requires it.
I added two new attributes to the gsm_bts object, they are:
* the start() function includes the code that we need to run to start
the BTS. This new function contains the socket creation in the
particular case of nanoBTS and HSL femto.
* the started boolean, which is used to know if we have already
started the BTS, ie. we have already invoked start().
Note that, I have splitted the bts_model_*_init() function into two
functions, the _init() functions that register the BTS driver
and the _start() functions that start BTS driver on-demand.
While I was at it, I added several changes/cleanups to this patch:
* Group all bts_model_*_init() calls into one function bts_init(),
which is called in the initialization path of osmo-nitb and
osmo-bsc.
* Add openbsc/bss.h that contains the declaration of
bsc_bootstrap_network, bsc_shutdown_net and bts_init.
* Add missing e1inp_init() in osmo-bsc.
* Fix missing declaration of hsl_setup in openbsc/e1_input.h
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Summary of changes:
s/signal_cbfn/osmo_signal_cbfn/g
s/register_signal_handler/osmo_signal_register_handler/g
s/unregister_signal_handler/osmo_signal_unregister_handler/g
s/dispatch_signal/osmo_signal_dispatch/g
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These are not needed any more. We used them for u_int
types but we now use uint which comes from stdint.h
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This was done with sed on the files.
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libosmogsm is a new library that is distributed in the libosmocore.
Now, openbsc depends on it. This patch gets openbsc with this
change.
This patch also rewrites all include path to the new
osmocom/[gsm|core]
Signed-off-by: Pablo Neira Ayuso <pablo@gnumonks.org>
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... this allows the BTS driver to decide if it should handle the event at all
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... and make sure tests work again after restructuring
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