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bsc_init.c was a big mess even only for two supported BTS models,
so before adding more BTS types, this needs a cleanup.
All the BTS specific code from bsc_init.c has now moved into
bts_{siemens_bs11,ipaccess_nanobts}.c
This has required that input_event() and nm_state_event() get both
converted to proper libosmocore signals instead of referencing external
symbols.
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The reason for this is quite simple: We want to make sure anyone
running a customized version of OpenBSC to operate a network will
have to release all custom modifiations to the source code.
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Reduce the dependencies on the header files.
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This adds a test coverage build. One can use gcov and lcov on the
resulting data afterwards to see which code paths were executed and
which were not.
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* use pkg-config from openbsc to find header and library
* move sms and timer tests to libosmocore itself
* ensure "make distcheck" works on both packages
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Everything is linking fine here.
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tmsi is four octets long, there is no need to make it a string
and then jump through hoops to convert it to a number. Keep the database
using it as a string to benefit from the NULL handling of the db.
Introduce the reserved tmsi which has all bits set to 1 according
to GSM 03.03 ยง2.4 and start checking for it and make sure the db
code will never allocate such a tmsi.
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Currently we have circular dependencies from libbsc to libmsc
and this requires to play some linker tricks. The problem will
be solved in two ways, first we will get rid of the circular
dependencies and second we can start using --start-group and
--end-group of the linker to play the tricks for us.
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For the BSC part we still assign a gsm_subscriber to lchan but it
might only contain the TMSI of this subscriber.
For the MSC part we will need the HLR/VLR feature of the gsm_subscriber,
specially the lookup's by number...
So if libbsc.a/libmsc.a are compiled in one app and used the
subscribers will be shared, and if only libbsc.a gets used we will
have more empty gsm_subscriber.c..
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Attempt to split up bsc/msc functionality according to the specs. The
libbsc.a will be responsible for communicating with the BTS, configuring
it, paging, channel allocation and passing layer3 messages in both
ways. libmsc.a will implement the policy and such.
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