osmocom-net-gprs January 2018

osmocom-net-gprs@lists.osmocom.org

5 participants
5 discussions

RFC: unit tests for kernel GTP module
by Harald Welte 31 Dec '25

31 Dec '25

Dear GTP-interested folks, I would love to somehow get towards some degree of unit testing (or even "continuous integration") for teh kernel GTP code. We currently have the original code in the kernel, we had some recent small fixes and now are getting more patches into place. With relatively few active users out there (and probably none of them in production yet), it's particularly easy to introduce regressions while working on the code. Also, having tested new code even against a test set with limited covrage could help to get more confidence in new patches and thus get them merged sooner. Using tools like sgsnemu of OpenGGSN and the command line tools included in libgtpnl, it should be possibel to cook up some scripts for testing. Even the most basic set of tests would be an improvement over what we have now. One could also think about pcap replay to test with hand-crafted or real-world packets from other GTP implementations. As much as I'd like to put something like this into place myself, I don't think I will be able to work much on this in the near future. The GTP module at this point is a pure hobby and contrary to some years ago while I started it, I don't have any contract work in the GTP area at this point, so other projects currently unfortunately get more attention. So in case somebody among the GTP-interested parties (Travelping, OAI, ...) would want to do something in terms of testing, I'd be more than happy if somebody would step ahead. Otherwise it's all just vapourware going to end up on my ever-growing TODO list :/ Also, if netdev folks have some ideas/pointers about possible frameworks/tools for this kind of testing [it must exist for at least some other kernel networking code?]: Please let me know. I'd be interested to have a look if there's something that can be used as a basis (starting network namespaces, sending/transmitting packets, test case startup/teardown, ...) My "old school" approach would have been to start one or multiple user-mode-linux kernels (those that are to be tested), and then have scripts that set up a gtp socket and gtp tunnels via the libgtp command line tools, and throw packets at that. But I'm sure there must be quite powerful frameworks for that kind of testing in the 21st century? How do other tunneling implementations handle this? Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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Problem when building OsmoSGSN
by XINKE ZHANG 15 Feb '18

15 Feb '18

Hi all, I built OsmoSGSN with the these following instructions. <build instructions> git clone git://git.osmocom.org/osmo-sgsn cd osmo-sgsn autoreconf -fi ./configure --enable-iu make -j5 make check make install sudo ldconfig <build instructions> And no error came out during building process, but no “osmo-sgsn” executable was found. Pls help me. Thank you in advance. Best Regards, Xinke

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sgsnemu ignoring Request accepted
by Viktor Tsymbalyuk 26 Jan '18

26 Jan '18

Hello, I continue to play with sgsnemu, and found that it stopped for some reason after "Request accepted". Does sgsnemu working? At my mind problem inside `create_pdp_conf` function . After small changes, I start to see icmp inside gtp tunnel in trace. Please check attachments with console output, patch and pcap. May be I has wrong understanding. -- Viktor

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sgsnemu: why --listen and --remote in one network?
by Viktor Tsymbalyuk 19 Jan '18

19 Jan '18

Hello, I'm querying why sgsnemu shoul work in a same network with ggsn? What the reason for such limitation? -- Viktor

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Osmocom Year 2017 Review
by Harald Welte 01 Jan '18

01 Jan '18

Dear all, I've written up a "short" review of what I perceive as the most important events in the Osmocom Cellular Infrastructure projects in 2017. See http://osmocom.org/news/84 for all details, or below for a raw copy+paste: h1. Osmocom Review 2017 This is a review of the most significant changes and events in the Osmocom Cellular Infrastructure projects in 2017 h2. January 2017 * announce of first ever public [[OsmoCon:]] conference in April * osmo-bts ** Add Abis OML failure event reporting ** fix memory leaks in osmo-bts-{sysmo,lc15} at every channel activation * openbsc/osmo-bsc ** support multiple UARFCNs in SI2quater * osmo-hlr ** add test suite for 2G and 3G authentication ** fix UMTS AKA re-sync h2. February 2017 * weekly manual testing with related weekly test reports to mailing list * "heads-up about the (lack of a )future of osmo-nitb":http://lists.osmocom.org/pipermail/openbsc/2017-February/010300.html * "heads-up about libosmo-sccp SIGTRAN work":http://lists.osmocom.org/pipermail/openbsc/2017-February/010274.html * "sysmo-usim-tool":http://lists.osmocom.org/pipermail/openbsc/2017-February/010317.html * libosmo-abis ** unix domain socket support (for Ericsson L2TP) * osmo-bts ** fix AMR HR DTX FSM logic ** fix SACCH sending fo system information with enum value > 7 ** osmo-bts-trx: fix RXGAIN and POWER parameters on second TRX ** fix TCH/H interleaving table bit position ** sysmoBTS 1020/1100: slow power ramp-up on TRX enable * osmo-sgsn ** fix PDP context activation memory allocation bug ** integrate support for UMTS AKA * openggsn ** fix kernel-gtp tunnel creation/removal for GTPv1 ** release 0.93 h3. March 2017 * "cgit improvements":http://lists.osmocom.org/pipermail/openbsc/2017-March/010448.html (about page, change-ID hyperlinks, issue hyperlinks) * Add README.md files to all our repositories * libosmocore ** migrate gsm 05.03 coding from OsmoBTS to libosmocore ** fix SQN / SEQ handling in UMTS AKA ** 3GPP AoIP message encoding/decoding * libosmo-abis ** fix ever-increasing jitter buffer * libosmo-netif ** handle SCTP in in stream server ** doxygen documentation on stream an datagram modules * osmo-bts ** octphy: CBCH support ** include MS timing offset in RSL measurements * osmo-sgsn ** handle IMSIs with leading zeroes * osmo-bsc ** fix T3186 encoding in SI13 ** Improved Ericsson OM2000/RBS2000 support ** new ctrl2soap proxy in python * osmo-hlr ** add CTRL interface ** fix SQN/SEQ handling in UMTS AKA h3. April 2017 * "update of coding style for longer line lengths":http://lists.osmocom.org/pipermail/openbsc/2017-April/010502.html * [[osmo-dev-con:OsmoCon2017]] and [[osmo-dev-con:OsmoDevCon2017]] * libosmocore ** "control interface for osmo_fsm":http://lists.osmocom.org/pipermail/openbsc/2017-April/010542.html * libosmo-netif ** fix file descriptor leak in error paths ** work around linux kenrel SCTP bug with sender_dry_events ** RTP marker bit support * libosmo-sccp ** Add new [[libosmo-sigtran:]] library with SS7 AS/ASP Link/Linkset handling, M3UA support, new FSM based SCCP implementation ** Add [[osmo-stp:]] program * osmo-bts ** inform BSC of PCU disconnect ** fix measurement reporting period ** exclude idle channels from uplink measurement processing ** octphy: measurement reports h3. May 2017 * libosmocore ** fix embedded builds ** import and generalise 'sercomm' from osmocom-bb into libosmocore ** SSE optimized convolutional coder ** fix wrong GSM FR codec SID frame generation ** doxygen docs for libosmocoding * osmo-bsc ** TS 04.14 mobile station side loop control * osmo-bts ** consistently check all RSL and OML TLVs for minimum length value ** fix bit-order in every HR codec parameter (spec compliance) ** OML get/set attribute handling ** SI2quater support ** bypass radio link timeout for lab testing * osmo-bsc ** PCU socket support for BSC-colocated PCU for Ericsson RBS2000 ** reelase 1.0.1 * "M3UA and SUA testing as part of jenkins":http://lists.osmocom.org/pipermail/openbsc/2017-May/010698.html * "osmo-gsm-tester produces successful runs with NITB as well as new AoIP":http://lists.osmocom.org/pipermail/openbsc/2017-May/010760.html h3. June 2017 * libosmocore ** doxygen autobrief ** doxygen documentation for libosmogb * osmo-bts ** use CLOCK_MONOTONIC timer for GSM frame timer ** PDTCH loopback support h3. July 2017 * "Plan for openbsc.git split and code review":http://lists.osmocom.org/pipermail/openbsc/2017-July/010914.html * libosmocore ** PDP charging characteristics in GSUP ** PRBS sequence generators ** multicast IP related helper functions ** 'make release' target * libosmo-sccp ** SCCP address book * osmo-bts ** new virtual BTS @osmo-bts-virtual@ for testing without radio hardware ** don't send dummy UI frames on unused BCCH slots on TC=5 ** GSMTAP: don't log/send fill frames consisting of only padding * osmo-hlr ** change to default GSUP port 4222 h3. August 2017 * "Support for SMPP Delivery Receipt / GSM03.40 Status Report":http://lists.osmocom.org/pipermail/openbsc/2017-August/011023.html * "Jenkins now executing M3UA, SUA and GGSN testsuite":http://lists.osmocom.org/pipermail/openbsc/2017-August/011043.html * libosmocore ** fix crash in lapd_est_req() * libosmo-abis ** release 0.4.0 * osmo-bts ** osmo-bts-trx: fix MS power control loop ** release 0.6.0 ** support sending/removing SI13 to/from PCU * osmo-bsc ** indicate R99+ MSC in SI3 to enable UMTS AKA over GERAN * osmo-sgsn ** properly report GERAN/UTRAN mode in PDP CTX ACT REQ to GGSN * osmo-msc ** implement IuCS support ** split openbsc.git into osmo-bsc.git, osmo-msc.git and osmo-sgsn.git * openggsn ** Add IPv6 address pool and IPV6 user (inner) plane support ** release 0.94 h3. September 2017 * libosmocore.git ** "'show talloc-context' VTY introspection":http://lists.osmocom.org/pipermail/openbsc/2017-June/010771.html ** CTRL parsing unit tests ** unification of vty exit/end commands * osmo-hlr ** CTRL interface tests -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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osmocom-net-gprs January 2018