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The new structure divides the code into a number of libraries
for the BSC core functionality, MSC core functionality, Abis transport,
TRAU and other bits.
This doesn't introduce any functional code change but simply moves
around files and alters Makefile.am accordingly.
Next step would be to disentangle a lot of the inter-library
dependencies and make the individual bits of code more independent.
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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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Introduce a method that will remove all subscribers that have a
zero use count. This is useful if someone wants to purge subscribers
from memory or wants to disable the everything in RAM feature.
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This is implemented by not freeing the subscriber when the
reference count becomes smaller than zero. We hope that this
will save many database accesses during the congres.
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Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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This is used by the paging code of the osmo_bsc. When we get
a paging response there should be an active subscriber with
the TMSI or IMSI and we can stop paging. There is no need to
allocate a new subscriber.
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Create a subscriber based on a known IMSI, search the list of
active subscribers if there is already someone like this.
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Try to get the company name of our sponsor right...
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We are implementing the intra BSC handover so we should have the
code in the BSC as well.
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On expired paging we might access a GSM Subscriber that has already
been deleted. To avoid this we will add a subscr_get/subscr_put for
the subscriber to the allocation and release path of the request.
Reported-by: Richard Zahoransky
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A channel will be released in case of
* Errors via the clear_request callback...
* no more transactions and operations are going on.
This means that if we do something without a transaction
the channel might be closed down right away. The bug fix
will be to create a transaction/operation.
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The function we call will take the item from the list and do
the right thing.
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Prepare to split the BSC and the MSC part by putting the
MSC data for a connection into a "gsm_subscriber_connection"
struct and renaming the macros.
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This library is intended to collect all generic/common funcitionality
of all Osmocom.org projects, including OpenBSC but also OsmocomBB
The library currently includes the following modules:
bitvec, comp128, gsm_utils, msgb, select, signal, statistics, talloc, timer,
tlv_parse, linuxlist
msgb allocation error debugging had to be temporarily disabled as it depends on
'debug.c' functionality which at the moment remains in OpenBSC
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Gracefully handle a case where success and expire could fire... I'm
only hitting this when doing something evil to simulate network code
but it seems appropriate to handle this gracefully.
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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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Remove the extra parameter from the method, the network can be
taken from the subscriber.
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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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