OpenBSC October 2017

openbsc@lists.osmocom.org

21 participants
55 discussions

RFC: gerrit verifcations as Jenkins Job Builder YAML file
by André Boddenberg 30 Oct '17

30 Oct '17

Hi all, I've created a prototyp'ish JJB YAML file [1] that holds all current gerrit verification jobs on jenkins.osomocom.org. Holger and Lynxis suggested to explore this way of managing Jenkins jobs in the "jenkins build slaves: Rationale for some builds in docker vs. some not?" thread. Following differences occurred, while clicking through all gerrit jobs configurations: - some jobs using gcc c compiler warnings v3, some v4 - some jobs are verifying drafts, some not - only two gerrit jobs are allowing concurrent builds Are these differences wanted? All job differences are commented in the YAML file. The jobs are deployed on jenkins.blobb.me [2]. What do you think about this approach [1] in general? Regards, André [1] https://gerrit.osmocom.org/#/c/3911/1 [2] https://jenkins.blobb.me/view/gerrit-JJB/

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RFC: Getting rid of FreeBSD build testing
by Harald Welte 29 Oct '17

29 Oct '17

Dear all, Holger and I (plus later the sysmocom team) had a discussion about whether we should continue to keep the FreeBSD build testing. Right now, jenkins is set up in a way to test build of a patch on Linux (currently Debian 8) and FreeBSD (currently 10.3). Only if it builds and passes "make check", the patch gets the magical "+V" so it can be merged. While in general it's of course good practise to write portable code and to test building on multiple operating systems, this adds quite a bit of extra effort: * patches every so often don't build on FreeBSD due to include header differences or the like, requiring extra iterations of a patch * the build takes longer time as the build matrix is multiplied by two operating systems * we cannot easily/safely migrate the way we buld to docker, as docker on FreeBSD is experimental Particularly during my recent OpenGGSN developments (IPv6) support, this was a big PITA and I'm sure I spent more time in debugging FreeBSD build issues than actually writing the code in the first place. Given that we arr not aware of anyone using the Osmocom stack on FreeBSD, the suggestion is thus to focus our available time on actual GSM related features rather than fixing up portability issues. So unless we receive significant complains as a response to this e-mail, we will disable the automatic build testing for patches on FreeBSD. This doesn't mean we will drop related code from our projects. We still appreciate build and other fixes for other platforms, but those would have to come as contributions from users on those platforms, rather than something that's actively maintained and tested by Osmocom upstream. If we want to extend build testing, I think it's more useful to have e.g. ARM/Linux builds, or clang builds on Linux than the FreeBSD builds. Let me know what you think. 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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Support in using slotmask
by Mayuri Tendulkar 26 Oct '17

26 Oct '17

Hi team I want to test the data on timeslot basis, where I can activate alternate timeslot oN B200. How this is possible? I tried to add parameters in bts-conf file with slotmask as 10101010. But I don't see any change. I also tried to change this value from 0xff to 0xaa in osmo-bts-trx code, but I get error. Can u please help? Regards Mayuri

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osmo-msc needs a fix of fsm names
by Neels Hofmeyr 25 Oct '17

25 Oct '17

Talking about libosmocore changes that break builds ;) By chance I noticed that since now osmo-gsm-tester tests fail for AoIP, osmo-msc bailing with fsm.c:150 Attempting to register FSM with illegal identifier 'FSM RESET' fsm.c:216 Attempting to allocate FSM instance of type 'FSM RESET' with illegal identifier 'FSM RESET INST' @pmaier, please fix osmo-msc's FSM name in a_reset.c ASAP. We can't test OsmoMSC until you do. Thanks! ~N

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libosmocore / rate_ctr / osmo_fsm / invalid identifiers
by Harald Welte 25 Oct '17

25 Oct '17

Dear Osmocom comunity, after my patches being in gerrit since October 3 without getting any significant review comments, I decided to rebase+merge the code to enforce correct "identifiers" for entnties like rate_ctr or osmo_fsm which get registered to libosmocore and which are subsequently automatically exported via CTRL. A valid identifier is from now on known as any 7-bit ASCII string excluding characters from the following set: :., {}[]()<>|~\\^`'\"?=;/+*&%$#! This has caused some (not entirely unexpected) breakage in osmo-bts.git and osmo-bsc.git and is the cause of a couple of "red" Jenkins builds for those projects. I've quickly followed-up with patches for those two repositories to make sure other people/patches don't suffer from fall-out. What's important to note from now on and in the future: * don't use any string identifiers that violate osmo_identifier_valid() * check the return value of calls like osmo_fsm_register() as they may fail if your identifiers are incorrect * use ':' as separator in rate_ctr_group or rate_ctr names. Any existing '.' will be transparently converted to ':' for compatibility reasons. * if you find other sub-systems in the libosmo* universe that use string identifiers for certain objects, let's try to introduce calls to osmo_identifier_valid() in all of their registration paths to ensure that we could later on add automatic export of such objects to CTRL or other interfaces without having to change the name at that point. Things that come to my mind are e.g. * SCCP global titles and AS/ASP names in libosmo-sigtran * SMPP ESME names in osmo-{msc,nitb} Patches welcome! Regards, Harald -- - Harald Welte <hwelte(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte

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Problem running osmoBTS with BladeRF
by Anindya Sankar Roy 24 Oct '17

24 Oct '17

Hello all, I am getting the following error and osmocom-bts-virtual just closes giving following error. bts.c:208 Shutting down BTS 0, Reason Abis close <0006> bts_model.c:161 Unimplemented bts_model_trx_deact_rf <0006> bts_model.c:55 Unimplemented bts_model_trx_close Please help Thanks Anindya

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Re: layer23/mobile: VTY is broken
by Harald Welte 23 Oct '17

23 Oct '17

Hi Neels, On Mon, Oct 23, 2017 at 03:54:40AM +0200, Neels Hofmeyr wrote: > Ah, damn. I checked all of the repositories I know to use the VTY, I didn't > imagine that OsmocomBB also has a VTY. That's really my fault then. I think in general we should not fall into that trap. We have *no clue* at all who might be using libosmo* for whatever purpose. If we provide a libary with a given API/ABI, then it's our responsibility to keep that ABI/API as stable as possible. I understand that it was hardly possible without fall-out in that particular case, and for sure there are exceptions. However, completely unrelated to this particular topic (and hence the Cc to openbsc@) I'm not happy in general with the way how "carlessly" we sometimes introduce breakage. We have to be more disciplined in general on this. All of us. BTW: The fact that this change has gone into master without being noticed also means that possibly we're not modelling osmocom-bb as a downstream user of libosmocore that needs to be rebuilt (and at least checked if it starts up correctly?) whenever testing a libosmocore change. That's also something to investigate. Maybe there's some way we can test this without too much effort. 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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Re: [MERGED] libosmocore[master]: Cleanup jenkins build scripts
by Neels Hofmeyr 23 Oct '17

23 Oct '17

This patch was merged, but I frankly don't like what it does. Building in a separate dir is fine, but it does so with a bunch of changes along that introduce indenting errors and potentially destroy the scripts' certainty of building cleanly every time. Please still reply to my comments at https://gerrit.osmocom.org/#/c/3132/ ...maybe actually here on the ML instead of on gerrit? Thanks! ~N

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Re: Build failure of network:osmocom:nightly/libosmocore in xUbuntu_16.04/i586
by Neels Hofmeyr 23 Oct '17

23 Oct '17

On Sat, Oct 21, 2017 at 07:55:00PM +0000, OBS Notification wrote: > Visit https://build.opensuse.org/package/live_build_log/network:osmocom:nightly/l… > > Package network:osmocom:nightly/libosmocore failed to build in xUbuntu_16.04/i586 The failure is [ 235s] +/usr/src/packages/BUILD/tests/testsuite.dir/at-groups/9/test-source: line 25: 32555 Illegal instruction $abs_top_builddir/tests/conv/conv_gsm0503_test Seems our cpu feature selection isn't working on that particular build host. Should we investigate or just hope to hit another build host next time? ~N

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some current patches blocking others
by Neels Hofmeyr 22 Oct '17

22 Oct '17

Would like to mention, since it's hard to see the sequence of patches in gerrit. I have a series of osmo-hlr patches ready for commit, but others preceding them still need review: https://gerrit.osmocom.org/#/c/4305/ https://gerrit.osmocom.org/#/c/4273/ https://gerrit.osmocom.org/#/c/4275/ ...whenever you get a chance is fine, thx! ~N

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OpenBSC October 2017