osmocom-net-gprs

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5 participants
507 discussions

Support for Fast Ack/Nack Report in osmoPCU
by Saurabh Sharan 23 Feb '16

23 Feb '16

Hello All, We are currently working on providing the support of FANR in osmoPCU. We are in design phase and will share the design details soon. Please provide your valuable feedback on the design. Regards Saurabh

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Support of Basic EGPRS in OsmoPCU
by Saurabh Sharan 23 Feb '16

23 Feb '16

Hello All, We would like to provide the information that since Dec-2015 we have been working on adding the EGPRS support in OsmoPCU. We have provided the support for Basic EGPRS feature, details of which explained below. We would like to make the code available in Public domain so that we receive the feedback from all and upon approval would contribute to the master branch. Following are the features added: 1) EGPRS MCS 1 to MCS 9 coding scheme support 2) Radio Link Control Block Structure Updates 3) MCS Selection 4) Transmission and reception data flows for MCS1 to MCS9 5) EGPRS incremental redundancy (IR) mode, RLC function 6) EGPRS Window selection 7) RLC Re-segmentation and split block support 8) RLC retransmission based on coding families A, A', B and C We have taken interim rebase from the master during Jan-2016. Regards, Saurabh

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EDGE over osmo-pcu
by Jacob Erlbeck 13 Feb '16

13 Feb '16

Hi everybody, we have just done the first download of an Internet page using the current bleeding EDGE development version of the OSMO-PCU. Supported are MCS-1 to MCS-9 in downlink and MCS-1 to MCS-4 in uplink direction. The download of 'www.osmocom.org' has been documented in a PCAP file and can be downloaded from https://openbsc.osmocom.org/trac/wiki/osmo-pcu To decode the data blocks, an experimental patch for the gsmtab dissector is also available from there. Cheers Jacob -- - Jacob Erlbeck <jerlbeck(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 Directors: Holger Freyther, Harald Welte

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[PATCH 0/3] Fix handling PDP update messages
by Daniel Willmann 04 Feb '16

04 Feb '16

From: Daniel Willmann <daniel(a)totalueberwachung.de> Hello, it seems PDP context updates was never really used/tested to an Update PDP context would not go through. The following patches fix that (at least for gtpv1). Regards Daniel Daniel Willmann (3): gtp: Pass pdp along when calling gtp_req() in gtp_update_context() gtp: Make gtp_update_pdp_conf() work for gtp0 and gtp1 connections gtp: Handle gtpv1 in gtp_update_pdp_conf() correctly gtp/gtp.c | 162 +++++++++++++++++++++++++++++++++++++++++++++----------------- 1 file changed, 118 insertions(+), 44 deletions(-) -- 2.1.4 -- - Daniel Willmann <dwillmann(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 Directors: Holger Freyther, Harald Welte

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STP in osmocom?
by Kasper Nielsen 17 Jul '15

17 Jul '15

Several mails in mailing lists talks about OSMO STP for connecting between two points with sctp and m3ua. I cannot find the OSMO STP code anywhere? Is it public source code?

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openggsn fails on debian 8
by Kasper Nielsen 05 Jun '15

05 Jun '15

when trying to install on clean debian 8 I get errors. This is my bash: ./configure bash: ./configure: No such file or directory running alcohol && automake && autoheader && autoconf also gives lots of errors. How can I install openggsn?

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[PATCH 1/3] write_queue: Check the result of osmo_wqueue_enqueue and free
by Holger Hans Peter Freyther 22 May '15

22 May '15

The write_queue is designed to have a maximum amount of pending messages and will refuse to take new messages when it has been reached. The caller can decide if it wants to flush the queue and add the message again, create a log. But in all cases the ownership of the msgb has not been transferred. Fix the potential memory leak in the failure situation. --- src/openbts_sock.cpp | 5 ++++- src/sysmo_l1_if.c | 10 ++++++++-- 2 files changed, 12 insertions(+), 3 deletions(-) diff --git a/src/openbts_sock.cpp b/src/openbts_sock.cpp index 2d9cae4..5e6f16c 100644 --- a/src/openbts_sock.cpp +++ b/src/openbts_sock.cpp @@ -79,7 +79,10 @@ struct l1fwd_hdl *l1fh = talloc_zero(NULL, struct l1fwd_hdl); int pcu_sock_send(struct msgb *msg) { - osmo_wqueue_enqueue(&l1fh->udp_wq, msg); + if (osmo_wqueue_enqueue(&l1fh->udp_wq, msg) != 0) { + LOGP(DPCU, LOGL_ERROR, "PCU write queue full. Dropping message.\n"); + msgb_free(msg); + } return 0; } diff --git a/src/sysmo_l1_if.c b/src/sysmo_l1_if.c index bef680e..c0721b8 100644 --- a/src/sysmo_l1_if.c +++ b/src/sysmo_l1_if.c @@ -36,7 +36,10 @@ static int l1if_req_pdch(struct femtol1_hdl *fl1h, struct msgb *msg) { struct osmo_wqueue *wqueue = &fl1h->write_q[MQ_PDTCH_WRITE]; - osmo_wqueue_enqueue(wqueue, msg); + if (osmo_wqueue_enqueue(wqueue, msg) != 0) { + LOGP(DL1IF, LOGL_ERROR, "PDTCH queue full. dropping message.\n"); + msgb_free(msg); + } return 0; } @@ -324,7 +327,10 @@ int l1if_pdch_req(void *obj, uint8_t ts, int is_ptcch, uint32_t fn, /* transmit */ - osmo_wqueue_enqueue(&fl1h->write_q[MQ_PDTCH_WRITE], msg); + if (osmo_wqueue_enqueue(&fl1h->write_q[MQ_PDTCH_WRITE], msg) != 0) { + LOGP(DL1IF, LOGL_ERROR, "PDTCH queue full. dropping message.\n"); + msgb_free(msg); + } return 0; } -- 2.3.5

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[PATCH 1/2] llist: Reduce the external dependencies of this test
by Holger Hans Peter Freyther 22 May '15

22 May '15

Debian is using the classic bfd linker and when passing libosmogb as link dependency it always wants/needs to resolve the bssgp_prim_cb symbol (which is to be provided by the application). Only keep the libosmocore dependency. Fixes: lib/libosmogb.so: undefined reference to `bssgp_prim_cb' collect2: error: ld returned 1 exit status Makefile:511: recipe for target 'llist/LListTest' failed --- tests/Makefile.am | 3 --- 1 file changed, 3 deletions(-) diff --git a/tests/Makefile.am b/tests/Makefile.am index b822e46..77760f3 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -56,9 +56,6 @@ ms_MsTest_LDFLAGS = \ llist_LListTest_SOURCES = llist/LListTest.cpp llist_LListTest_LDADD = \ - $(top_builddir)/src/libgprs.la \ - $(LIBOSMOGB_LIBS) \ - $(LIBOSMOGSM_LIBS) \ $(LIBOSMOCORE_LIBS) \ $(COMMON_LA) -- 2.3.5

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OsmoBTS - OsmocomBB emulation project
by Dominiq T 11 Apr '15

11 Apr '15

Dear Osmcom, I am working on a project, where I am connecting OsmoBTS with OsmocomBB without hardware. I am trying to remove l1 on both sides and connect OsmoBTS with BB application via simple unix sockets. Based on the further recommendations, I am using osmobts-trx branch. Currently I am able to handle messages between BTS and TRX driver on clock and control ports, and on BB side I am in state that phone wants to connect into a cell (so its waiting for BCCH) . I am now trying to find a possible way how to handle messages on data port , between BTS – TRX ( TRX is removed, there is my application instead), and forward these messages to my customized BB l1 interface . The thing is that I need to send to BB phone (layer23) messages in structures from gsm_04_08.h (i.e. gsm48_system_information_type_3). I am not sure if I will be able to get needed from the messages coming on the data port 5702. I found, that PCU creates unix socket on “/tmp/pcu_bts” , but only in case sysmoBTS is in use (please correct me if I am wrong), so this will be not possible due compilation errors without HW. Here I found the gsm48_system_information_type_3 messages. So basically I need somehow to get this message structures on my custom l1 BB interface. Do you have any idea how to do this ? Any advice will be highly appreciated. Many thanks you for your attention :) Best regards, Dominik Tamaskovic.

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Announcing OsmoDevCon 2015
by Harald Welte 13 Feb '15

13 Feb '15

Dear Osmocom.org project members, I'm happy to be able to announce the annual incarnation of OsmoDevCon. The Date is set for March 27 through 30. Venue: As usual, IN-Berlin e.V. in Berlin, Germany. Further details can be obtained from http://openbsc.osmocom.org/trac/wiki/OsmoDevCon2015 Attendance, as usual, is restricted to people with an active history in the Project by contributions in terms of code, patches, discussions, documentation or in other form. = Registration = If you have wiki access, please add yourself to the #Requested section. Alternatively, you can send me private e-mail about it. After review, your (nick)name will be listed in the #Confirmed section. Looking forward to meeting all of you again soon! -- - 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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