Common library for all Osmocom projects (libosmocore, libosmogsm, libosmovty, libosmogb, libosmosim, libosmousb, ...) https://osmocom.org/projects/libosmocore
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Harald Welte 9fe1f9fb0b Introduce CRC and FSM for IuUP (user plane) as used in 3G RTP data
Only support for SMpSDU mode is introduced in this commit.

Not supported explicit list:
- Transparent mode
- ATM/AAL2 based Transport layer
- GTP-U based Transport Layer
- Iu Rate Control procedure
- Time Alignment procedure

APIs are provided to allocate the primitives properly inside the related
msgb. This way primitives can be placed in the headroom, leaving the
data part of the msgb for the IuUP payload, hence allowing re-use of the
msgb and 0 copy of IuUP payload when forwarding data over RNL<->TNL.
Since RNL and TNL primitives relu struct osmo_prim_header, which is not
packed, they cannot be set to packed, and hence proper memory alignment
in the msgb must be done to avoid misaligned accesses (Asan errors about
it otherwise).

Related: SYS#5516
Change-Id: Ibe356fa7b1abaca0091e368db8478e79c09c6cb0
2021-12-22 14:58:31 +01:00
contrib Bump version: 1.5.1.282-ab5e-dirty → 1.6.0 2021-11-16 13:08:23 +01:00
debian debian/control: minimum version of libtalloc-dev must be >= 2.1.0 2021-11-17 20:13:36 +00:00
doc merge_doc.xsl: move to osmo-gsm-manuals.git 2018-11-12 14:07:05 +01:00
include Introduce CRC and FSM for IuUP (user plane) as used in 3G RTP data 2021-12-22 14:58:31 +01:00
m4 Add code coverage support 2019-11-30 02:17:23 +00:00
src Introduce CRC and FSM for IuUP (user plane) as used in 3G RTP data 2021-12-22 14:58:31 +01:00
tapset support for stats static userspace probes via systemtap 2021-02-22 09:58:00 +01:00
tests Introduce CRC and FSM for IuUP (user plane) as used in 3G RTP data 2021-12-22 14:58:31 +01:00
utils treewide: remove FSF address 2021-12-14 12:44:03 +01:00
.gitignore .gitignore: add utils/osmo-aka-verify binary 2021-11-17 01:54:16 +03:00
.gitreview add .gitreview 2016-05-19 06:39:13 +00:00
.mailmap Add .mailmap file for mapping mail addresses in shortlog 2016-08-08 13:12:17 +02:00
COPYING add GPL to project source 2010-02-21 09:21:30 +01:00
Doxyfile.codec.in Set HTML_TIMESTAMP to NO to make build reproducible 2019-07-17 11:03:44 +00:00
Doxyfile.coding.in doxygen: enable cross referencing everywhere 2019-02-04 16:43:57 +00:00
Doxyfile.core.in Set HTML_TIMESTAMP to NO to make build reproducible 2019-07-17 11:03:44 +00:00
Doxyfile.ctrl.in doxygen: enable cross referencing everywhere 2019-02-04 16:43:57 +00:00
Doxyfile.gb.in doxygen: enable cross referencing everywhere 2019-02-04 16:43:57 +00:00
Doxyfile.gsm.in Set HTML_TIMESTAMP to NO to make build reproducible 2019-07-17 11:03:44 +00:00
Doxyfile.vty.in Set HTML_TIMESTAMP to NO to make build reproducible 2019-07-17 11:03:44 +00:00
Makefile.am initial support for static userspace probes via systemtap 2021-02-03 13:55:40 +00:00
README.md README.md: Use https everywhere 2021-02-11 11:57:13 +01:00
TODO-RELEASE Bump version: 1.5.1.282-ab5e-dirty → 1.6.0 2021-11-16 13:08:23 +01:00
configure.ac logging: make LIBOSMOCORE_NO_LOGGING work as expected 2021-12-09 15:25:53 +00:00
git-version-gen add git-version-gen magic to automatically generate package version 2010-03-23 00:30:19 +08:00
libosmocodec.pc.in pkgconfig/osmocodec/osmocoding: link to talloc 2020-07-20 23:52:31 +02:00
libosmocoding.pc.in pkgconfig/osmocodec/osmocoding: link to talloc 2020-07-20 23:52:31 +02:00
libosmocore.pc.in libosmocore.pc.in: Append -lsctp to Libs.private 2019-10-22 16:09:05 +02:00
libosmoctrl.pc.in remove our internal copy of talloc, use system libtalloc 2015-12-05 23:38:18 +01:00
libosmogb.pc.in Revert "pkgconfig: link to mnl if available" 2021-01-08 10:14:02 +00:00
libosmogsm.pc.in remove our internal copy of talloc, use system libtalloc 2015-12-05 23:38:18 +01:00
libosmosim.pc.in remove our internal copy of talloc, use system libtalloc 2015-12-05 23:38:18 +01:00
libosmousb.pc.in libosmocore libusb integration 2019-12-16 00:17:27 +01:00
libosmovty.pc.in remove our internal copy of talloc, use system libtalloc 2015-12-05 23:38:18 +01:00
osmo-release.mk Fixup severe build performance issues 2017-10-04 16:26:37 +02:00
osmo-release.sh osmo-release.sh: Blacklist script file from LIBVERS matches 2021-11-16 13:03:08 +01:00

README.md

libosmocore - set of Osmocom core libraries

This repository contains a set of C-language libraries that form the core infrastructure of many Osmocom Open Source Mobile Communications projects.

Historically, a lot of this code was developed as part of the OpenBSC project, but which are of a more generic nature and thus useful to (at least) other programs that we develop in the sphere of Free Software / Open Source mobile communications.

There is no clear scope of it. We simply move all shared code between the various Osmocom projects in this library to avoid code duplication.

The libosmocore.git repository build multiple libraries:

  • libosmocore contains some general-purpose functions like select-loop abstraction, message buffers, timers, linked lists
  • libosmovty contains routines related to the interactive command-line interface called VTY
  • libosmogsm contains definitions and helper code related to GSM protocols
  • libosmoctrl contains a shared implementation of the Osmocom control interface
  • libosmogb contains an implementation of the Gb interface with its NS/BSSGP protocols
  • libosmocodec contains an implementation of GSM voice codecs
  • libosmocoding contains an implementation of GSM channel coding
  • libosmosim contains infrastructure to interface SIM/UICC/USIM cards

Homepage

The official homepage of the project is https://osmocom.org/projects/libosmocore/wiki/Libosmocore

GIT Repository

You can clone from the official libosmocore.git repository using

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

There is a cgit interface at https://git.osmocom.org/libosmocore/

Documentation

Doxygen-generated API documentation is generated during the build process, but also available online for each of the sub-libraries at https://ftp.osmocom.org/api/latest/libosmocore/

Mailing List

Discussions related to libosmocore are happening on the openbsc@lists.osmocom.org mailing list, please see https://lists.osmocom.org/mailman/listinfo/openbsc for subscription options and the list archive.

Please observe the Osmocom Mailing List Rules when posting.

Contributing

Our coding standards are described at https://osmocom.org/projects/cellular-infrastructure/wiki/Coding_standards

We us a gerrit based patch submission/review process for managing contributions. Please see https://osmocom.org/projects/cellular-infrastructure/wiki/Gerrit for more details

The current patch queue for libosmocore can be seen at https://gerrit.osmocom.org/#/q/project:libosmocore+status:open