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Holger Hans Peter Freyther 012a7eec29 gprs_llc: Lookup lle based on the real TLLI 
During the GPRS Attach procedure we might have a foreign tlli and
in the RX create a LLME on the fly for this tlli. The GMM GPRS
Attach handling code will then assign a new TLLI and keep the
foreign tlli as the llme->old_tlli.

When the GMM is sending the identity request the msgb_tlli will
point to the foreign tlli. The GPRS LLC code will then try to find
that foreign tlli but due the conversion this will not be found.
Instead a new ad-hoc LLE/LLME will be created on the fly for
each message (this means there are duplicate LLE/LLMEs in the
list).

Make the code more strict and remove the tlli_foreign2local change
from the look-up routine. This will make the GPRS LLC code find
the right LLE/LLME and the N(U) will be handled correctly.

This partially reverts:
  f0901f0067

Addresses:
  <0012> gprs_llc.c:773 LLC RX: unknown TLLI 0xadf11820, creating LLME on the fly
  ...
  <0012> gprs_llc.c:357 LLC TX: unknown TLLI 0xedf11820, creating LLME on the fly

Reproducable:
  Use pcu_emu (gprs attach) and observe with wireshark.
 		2013-07-31 14:57:21 +02:00
..
contrib Introduced support for external python tests 2013-06-24 13:22:34 +02:00
doc remove 'bind early' from osmo-bsc_mgcp example config 2013-07-21 15:52:40 +08:00
include expiration: Allow to disable the periodic location updating procedure 2013-07-27 22:02:24 +02:00
src gprs_llc: Lookup lle based on the real TLLI 2013-07-31 14:57:21 +02:00
tests tests: TestCase.assertGreater is not available on Python 2.5 2013-07-27 22:23:25 +02:00
tools hlrstat: Print numeric MCC/MNC in case no name is available 2010-01-01 15:08:38 +01:00
.gitignore smpp: Move the coding/mode detection into a utils file 2013-07-27 20:03:10 +02:00
AUTHORS add sylvain and andreas as authors 2010-01-10 18:21:33 +01:00
COPYING License change: We are now AGPLv3+ instead of GPLv2+ 2011-01-01 15:39:34 +01:00
Makefile.am Introduced support for external python tests 2013-06-24 13:22:34 +02:00
README update README with URL of the homepage 2010-05-04 08:10:18 +02:00
configure.ac smpp: Move the coding/mode detection into a utils file 2013-07-27 20:03:10 +02:00
git-version-gen automatically include program version and print it from vty and --version 2010-03-23 00:09:32 +08:00
openbsc.pc.in Install gsm_04_08.h and required headers into a openbsc/ 2010-02-16 17:51:42 +01:00
osmoappdesc.py hsl: Remove the support for the HSL bts from OpenBSC 2013-07-03 16:19:41 +02:00

README 

About OpenBSC
=============

OpenBSC is a minimalistic implementation of the GSM Network, with
particular emphasis on the functionality typically provided by the BSC,
MSC, HLR, VLR and SMSC.

Its currently supported interfaces towards the BTS are:

 * Classic A-bis over E1 using a mISDN based E1 interface. In other
   words, you can connect existing GSM Base Transceiver Station (BTS)
   through E1 to OpenBSC.  So far, we have only tested the Siemens BS-11
   Test reports with other BTS are much appreciated!

 * A-bis over IP as used by the ip.access nanoBTS product family

You can find the project documentation at http://openbsc.gnumonks.org/

This project is still in its early days, and there are lots of areas where it
doesn't behave as per GSM spec.

	Harald Welte <laforge@gnumonks.org>


libosmocore
===========

Please note that as of March 2010, OpenBSC has a dependency to a library
called "libosmocore".  You can obtain that library from

	git://git.osmocom.org/libosmocore.git