OpenBSC July 2011

openbsc@lists.osmocom.org

22 participants
33 discussions

Radios
by Barnaby Astles 24 Jul '11

24 Jul '11

Has any one looked at airspan radios ? Specifically this one: http://www.airspan.com/products/airharmony/ Barnaby J Astles

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Current OpenBSC + LCR using MNCC socket
by Lennart Müller 23 Jul '11

23 Jul '11

Hello, since some days I'm using an old version of OpenBSC and LCR (as suggested by University of Freiburg) to interconnect our GSM and PSTN. We are using Debian squeeze and a nanoBTS. However, I would like to upgrade to a newer version of OpenBSC. Unfortunately, no current LCR version compiles without errors such as missing declarations etc., for example: g++ -DHAVE_CONFIG_H -I. -DWITH_GSM_BS -I./openbsc/include -I./libosmocore/include -I./openbsc -Wall -DCONFIG_DATA="\"/usr/local/lcr\"" -DSHARE_DATA="\"/usr/local/lcr\"" -DLOG_DIR="\"/usr/local/lcr\"" -DEXTENSION_DATA="\"/usr/local/lcr/extensions\"" -g -O2 -MT gsm.o -MD -MP -MF .deps/gsm.Tpo -c -o gsm.o gsm.cpp In file included from ./openbsc/include/openbsc/rest_octets.h:4, from ./openbsc/include/openbsc/gsm_data.h:9, from gsm_bs.h:2, from main.h:157, from gsm.cpp:12: ./openbsc/include/openbsc/gsm_04_08.h:33: error: use of enum ‘gsm_chan_t’ without previous declaration ./openbsc/include/openbsc/gsm_04_08.h:33: error: invalid type in declaration before ‘;’ token ./openbsc/include/openbsc/gsm_04_08.h:34: error: use of enum ‘gsm_chreq_reason_t’ without previous declaration ./openbsc/include/openbsc/gsm_04_08.h:34: error: invalid type in declaration before ‘;’ token In file included from ./openbsc/include/openbsc/gsm_data_shared.h:11, from ./openbsc/include/openbsc/gsm_data.h:154, from gsm_bs.h:2, from main.h:157, from gsm.cpp:12: ./libosmocore/include/osmocom/gsm/gsm_utils.h:62: error: expected identifier before ‘)’ token ./libosmocore/include/osmocom/gsm/gsm_utils.h:62: error: two or more data types in declaration of ‘parameter’ gsm.cpp: In function ‘gsm_mncc* create_mncc(int, unsigned int)’: gsm.cpp:195: error: invalid application of ‘sizeof’ to incomplete type ‘gsm_mncc’ etc. etc. If I manually include some header files from libosmocore and OpenBSC to LCR and declare missing ENUMs (dirty hacks), LCR starts without a problem. Starting osmo-nitb with -P and -m parameters, LCR can connect to MNCC socket. But any try to start voice traffic either from or to a mobile station results into these continuous messages: <0006> gsm_04_08.c:2954 receive message GSM_TCH_FRAME <0006> gsm_04_08.c:2986 TCH frame to lchan without RTP connection <0006> gsm_04_08.c:2954 receive message GSM_TCH_FRAME <0006> gsm_04_08.c:2986 TCH frame to lchan without RTP connection <0006> gsm_04_08.c:2954 receive message GSM_TCH_FRAME <0006> gsm_04_08.c:2986 TCH frame to lchan without RTP connection ..... Furthermore, either OpenBSC ignores LCR messages or LCR does not send messages to OpenBSC, because calls from mobile stations are signalled through LCR to asterisk; calls from asterisk to a mobile station are indicated by LCR but not by OpenBSC. All configuration files of the running setup (openbsc.cfg, LCR files) are used. Commits... - LCR: 39a36cb99a6dba1441a7a4b51914e0dadf3a7ae8 - libosmocore: 95f7eb288c4b8b69d61fa8d68957fb21f09e11e5 - OpenBSC: fe2d9b2fab2ae36a12411435f910efc9697d7b18 (debian branch, but same problem with master) Is there really no possibility at the moment to run LCR with a current OpenBSC? Many thanks in advance, Lennart

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Bounce action notification
by mailman＠lists.osmocom.org 23 Jul '11

23 Jul '11

This is a Mailman mailing list bounce action notice: List: OpenBSC Member: christoph_schueler(a)web.de Action: Subscription disabled. Reason: Excessive or fatal bounces. The triggering bounce notice is attached below. Questions? Contact the Mailman site administrator at mailman(a)lists.osmocom.org.

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Telecommunication and Wireless Hacking at CCC CAMP 2011
by Fabio Pietrosanti (naif) 22 Jul '11

22 Jul '11

Hi all, i just wanted to send a summary of all most cool talk that will be at CCC CAMP 2011 related to Telecommunications and Wireless Technologies hacking: Open-source 4G radio - It's time to start WiMAX and LTE hacking http://events.ccc.de/camp/2011/Fahrplan/events/4446.en.html Applied Research on security of TETRA radio - Digital radio technology beyond GSM http://events.ccc.de/camp/2011/Fahrplan/events/4496.en.html GPRS Intercept - Wardriving phone networks http://events.ccc.de/camp/2011/Fahrplan/events/4504.en.html Introduction to Satellite Communications - Installation and Operation of Satellite Systems http://events.ccc.de/camp/2011/Fahrplan/events/4442.en.html Transition Telecom - Telecommunications and networking during energy descent http://events.ccc.de/camp/2011/Fahrplan/events/4459.en.html Anyone missing to the list? -naif

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[PATCH 0/4] logrotate related patches
by Daniel Willmann 19 Jul '11

19 Jul '11

Hi, this series of patches makes sure that the logs generated by osmo_pcap_server are cleaned up. I wasn't able to use logrotate since we wanted to keep the timestamped filenames and logrotate would treat every log as independent. The script now sorts the pcap logs per-client and deletes all but the newest N files. The oldest M remaining files will be compressed with gzip. Some small fixes for problems I encountered are included. I hope the requirement for libosmocore 0.3.2 is okay. Regards, Daniel Willmann (4): server: Fix memory leak and error handling in restart_pcap server: Register signal handler to reopen logfiles on SIGHUP Catch up with API change in osmo_sock_init contrib: Add a script to clean up in regular intervals Makefile.am | 2 +- configure.ac | 3 +- contrib/Makefile.am | 1 + contrib/clean_old | 46 ++++++++++++++++++++++++++++++++++ include/osmo-pcap/osmo_pcap_server.h | 2 + src/osmo_client_network.c | 2 +- src/osmo_server_main.c | 4 +++ src/osmo_server_network.c | 31 +++++++++++++++++++++- 8 files changed, 86 insertions(+), 5 deletions(-) create mode 100644 contrib/Makefile.am create mode 100755 contrib/clean_old -- 1.7.5.3

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[PATCH 0/1] Updated script to handle whitespace
by Daniel Willmann 19 Jul '11

19 Jul '11

Hello, here an updated version of the script that handles whitespace in filennames properly. Thanks Holger for pointing out that such things do exist. :-) Regards, Daniel Willmann (1): contrib: Add a script to clean up in regular intervals Makefile.am | 2 +- configure.ac | 1 + contrib/Makefile.am | 1 + contrib/osmo_pcap_clean_old | 47 +++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 50 insertions(+), 1 deletions(-) create mode 100644 contrib/Makefile.am create mode 100755 contrib/osmo_pcap_clean_old -- 1.7.5.3

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Making NITB Database code async
by Holger Hans Peter Freyther 19 Jul '11

19 Jul '11

Hi all, I wonder what is the easiest way to make our database code async. Looking at our tables and code we do not seem to have a very complicated use. Problem: libdbi makes queries to SQLite that kills performance (e.g. every SELECT sends out pragma queries for every column to be queried). We have a hacked up libdbi from the last congress. We have some issues inserting new data into the database (e.g. the db being locked). In one way or another we have some issues there (either nitb will block, or the external process will...) When moving to postgres and a database on a different system we will have to deal with latencies and round trip time, but our code is sync. Goal: Most of our setting is 'set and forget'. We don't have complicate transactions (e.g. we don't have two nitb's setting the LAC of a subscriber, or wouldn't really care). When updating the in-memory representation, we don't mind how long it will take until it hits the disk on the remote system. Proposal: Also setting/storing will can remain like they are, the return value does only mean that a request has been sent. Only loading the subscriber, SMS, need to be asynchronous. M1: Change the gsm_subscriber code to load a subscriber asynchronously, this will mostly touch the gsm48 code and the VTY area. On load one can specify a callback. M2: Change the SMS code to load a SMS asynchronously, this will mostly change the SMS queue, some parts of the SMS submit (e.g. to check if there are still SMS to be sent) and the submit in the VTY M3: Probably create our own DB abstraction and provide a SQLite3 and Postgres backend using the native API of both of them (and getting rid of the libdbi and gdb issue) biggest problem: What do we do with the DB queries done from VTY that are asynchronous, e.g to confirm a SMS has been stored? Do we care about it? Do we turn this to a 'notification'? comments holger

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Compile Error with latest Version
by Axel Walsleben 18 Jul '11

18 Jul '11

Hi List, i just tried to build openbsc latest checkout. libosmocore compiles fine (checkout is also from today) i got this error: make[3]: Betrete Verzeichnis '/home/demo/openbsc/openbsc/src/libcommon' CC common_vty.o In file included from common_vty.c:26: ../../include/openbsc/vty.h:32: error: redeclaration of enumerator ‘E1INP_NODE’ /usr/local/include/osmocom/vty/command.h:77: note: previous definition of ‘E1INP_NODE’ was here In file included from common_vty.c:28: ../../include/openbsc/debug.h:16: error: expected identifier before ‘-’ token In file included from ../../include/openbsc/bsc_nat.h:24, from common_vty.c:30: ../../include/openbsc/mgcp.h: In function ‘mgcp_timeslot_to_endpoint’: ../../include/openbsc/mgcp.h:180: error: ‘DMGCP’ undeclared (first use in this function) ../../include/openbsc/mgcp.h:180: error: (Each undeclared identifier is reported only once ../../include/openbsc/mgcp.h:180: error: for each function it appears in.) make[3]: *** [common_vty.o] Fehler 1 make[3]: Verlasse Verzeichnis '/home/demo/openbsc/openbsc/src/libcommon' make[2]: *** [all-recursive] Fehler 1 make[2]: Verlasse Verzeichnis '/home/demo/openbsc/openbsc/src' make[1]: *** [all-recursive] Fehler 1 make[1]: Verlasse Verzeichnis '/home/demo/openbsc/openbsc' so libcommon failes. is there a fix available or it is a unknown problem thanks. Regards axel

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OML issue?
by Holger Hans Peter Freyther 18 Jul '11

18 Jul '11

Hi all, I have seen a strange OML NACK loop in OpenBSC with the ipaccess BTS. When I restart the osmo-nitb it is working again, so I suspect somehow our state of the BTS is corrupted. any ideas holger

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[PATCH] bts-init: Initialize the BTS like it will look after a reset
by Holger Hans Peter Freyther 18 Jul '11

18 Jul '11

Reset the BTS MO State on BTS bootstrap. This way we will always test the BTS disconnect/reconnect case of the BTS. Do not reset the administrative state of objects. The BSC might have set these and wants to maintain them across disconnect/ reconnect. Right now this is true for the TRX state. --- openbsc/src/libbsc/bsc_init.c | 3 +++ openbsc/src/libcommon/gsm_data_shared.c | 1 - 2 files changed, 3 insertions(+), 1 deletions(-) diff --git a/openbsc/src/libbsc/bsc_init.c b/openbsc/src/libbsc/bsc_init.c index 1be8cb7..02a3adf 100644 --- a/openbsc/src/libbsc/bsc_init.c +++ b/openbsc/src/libbsc/bsc_init.c @@ -406,6 +406,9 @@ static int bootstrap_bts(struct gsm_bts *bts) bts->si_common.ncc_permitted = 0xff; + /* Initialize the BTS state */ + gsm_bts_mo_reset(bts); + return 0; } diff --git a/openbsc/src/libcommon/gsm_data_shared.c b/openbsc/src/libcommon/gsm_data_shared.c index 58e3bed..b52d58a 100644 --- a/openbsc/src/libcommon/gsm_data_shared.c +++ b/openbsc/src/libcommon/gsm_data_shared.c @@ -36,7 +36,6 @@ void gsm_abis_mo_reset(struct gsm_abis_mo *mo) { - mo->nm_state.administrative = NM_STATE_NULL; mo->nm_state.operational = NM_OPSTATE_NULL; mo->nm_state.availability = NM_AVSTATE_POWER_OFF; } -- 1.7.4.1 --------------050709080504010702000704--

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OpenBSC July 2011