3GPP TS 44.021 specifies the format for modified V.110 frames as used
on the GSM air (radio) interface. Implement encoders and decoders for
this modified V.110 format.
Related: OS#1572
Change-Id: I60a2f2690459359437df20cf4da9043fa7c3ad11
V.110 defines a B-channel protocol for transmission of synchronous and
asynchronous serial data of V-series interfaces via terminal adapters
over ISDN.
Let's add (unoptimized but easy to debug) functions for encoding and
decoding of V.110 frames for various bit-rates.
Related: OS#1572
Change-Id: I1b5fd3847d3bfb0a0f763e0574893962ec699680
As per gnu extension doc ->
https://gcc.gnu.org/onlinedocs/gcc-6.2.0/gcc/Thread-Local.html :
".. When used with extern or static, __thread must appear immediately
after the other storage class specifier."
Change-Id: Ied1d3cf3ad2ff424bd0a2682aff29a8939b419b8
Use the same 32k0, 29k0, 14k4, … notation for GSM0808_DATA_RATE, as
it is already used in RSL_CMOD_CSD. As GSM0808_DATA_RATE enumes were
just added to libosmocore and aren't used yet, don't add backwards
compatible defines.
Related: OS#4393
Change-Id: Ia965cdd9f53af756e5ffaff9b8f389b5ad629969
Use the 32k0, 29k0, 14k4, … notation instead of 32000, 29000, 14400 etc
to make transparent data enums with non-transparent data enums where
this notation is already used.
Related: OS#4393
Change-Id: I7b7c8f175f349811b17a3db68a57577bd3f1d2df
Provide the definitions from 3GPP TS 28.062, Table 7.11.3.1.3-2 as
generally usable API.
Likely users:
- upcoming patch to improve conversion between S0-S15 and MultiRate
config, I900fda192742fa8f6dd54e9131ef1704b14cc41a
- osmo-msc to figure out conversion between SDP AMR mode-set and 3GPP TS
48.008 Permitted Speech S0-S15.
- osmo-bsc to choose AMR modes for channel activation from cfg /
permitted speech from MSC.
Related: SYS#5066
Change-Id: Icef7dd626d3d4641c66b8dd87e2047fc0ab547d1
This patch is a preparation for the upcoming change making use of
the built-in static_assert(), which is available since C11.
When using built-in static_assert(), gcc v12.2.1 fails:
include/osmocom/core/msgb.h: In function 'msgb_alloc_headroom_c':
include/osmocom/core/msgb.h:532:33: error: expression in static assertion is not constant
532 | osmo_static_assert(size >= headroom, headroom_bigger);
include/osmocom/core/utils.h:86:24: note: in definition of macro 'osmo_static_assert'
86 | static_assert((exp), "(" #exp ") failed")
| ^~~
include/osmocom/core/msgb.h: In function 'msgb_alloc_headroom':
include/osmocom/core/msgb.h:554:33: error: expression in static assertion is not constant
554 | osmo_static_assert(size >= headroom, headroom_bigger);
include/osmocom/core/utils.h:86:24: note: in definition of macro 'osmo_static_assert'
86 | static_assert((exp), "(" #exp ") failed")
| ^~~
These are not really *static* assert()s, because they operate on the
user supplied arguments 'size' and 'headroom', which are not guaranteed
to be integer literals. Neither they trigger compilation failures
as expected, nor do they abort at run-time. They simply do nothing.
Change-Id: I17ef4f3283ce20a5b452b7874c826acfb02a0123
Lets get rid of the magic number in struct osmo_i460_timeslot and
replace it with a define constant.
Change-Id: Id3a3782927c7dcbc873223d56129f291c04fee26
Related: OS#5198
It already happened several times [1][2] that new features were added
to enum osmo_bts_features, but the osmo_bts_features_{descs,names}[]
were left unchanged. Let's add static_assert()s to prevent this.
Change-Id: I8e3b7d3996e9f3e16c6d4e0d1d406fa538d5e9be
Related: [1] f4f5d54ea2
Related: [2] 18c6a8183f
Let's disambiguate. Our existing OSMO_AUTH_ALG_XOR was always only
the XOR-3G algorithm. Now that we recently introduced XOR-2G,
let's rename (with backwards compatibility #define).
Change-Id: I446e54d0ddf4a18c46ee022b1249af73552e3ce1
We've so far only been supporting XOR-3G algorithm as specified
in TS 34.108 (in both 3G and 2G-derivation mode).
However, XOR-3G used for 2G auth is different from the XOR-2G algorithm
as defined in Annex A of TS 51.010-1. Let's add support for that one,
too.
Change-Id: I0ee0565382c1e4515d44ff9b1752685c0a66ae39
Currently there's a big mess where include dir osmocom/gprs/ is used by
both libosmogsm and libosmogb.
Most of the header files under osmocom/gprs/ are actually all the
headers of libosmogb (there's no osmocom/gb/ dir). But a couple files
are actually RLC/MAC (TS 44.060) related are are also stored in there.
Those files have no relation/use in Gb, and are actually interused with
GSM (eg System Information 13 Rest Octets).
Hence, it makes sense to have the RLC/MAC related parts inside
osmocom/gsm/ as they should be in libosmogsm (and they actually are,
see gprs_rlc.h function implemented in src/gsm/gsm48_rest_octets.c).
The fact that some libosmogsm headers were placed in osmocom/gprs
instead of osmocom/gsm already created some issues, like
libosmocore.spec.in putting "%_includedir/%name/osmocom/gprs/" under
libosmogb, which is wrong.
As a first step to fix the mess, we move the 2 RLC/MAC headers currently
under osmocom/gprs/{gprs_rlc,protocol/gsm_04_60}.h under a single header
gsm/protocol/gsm_44_060.h
The two old headers are left existing for backward compatibility and now
simply include the new libosmogsm header, plus a warning asking users to
switch to the new header so we can eventually get rid of them.
This means libosmogb depends on libosmogsm, which is fine and was
already the case beforehand (libosmogb using functions like
gsm48_encode_ra() and linking against it in src/gb/Makefile.am).
Change-Id: I70cc21bf25a7081070738abacb409ed19094c3b2
Those allow selecting source host:port for UDP socket sending GSMTAP data.
It's handy when you have several GSMTAP sources operating simultaneously.
Change-Id: I51b3604ba79e42c474aa17007e7e308a12afcea8
There may be situations where we must check if there are still I.460
subchannels active, so lets make the function osmo_i460_subchan_count
public
Change-Id: I0454ffe5809f21504c1e263a781c06596d452d4b
Related: OS#5198
Rename contrib/struct_endianess.py to contrib/struct_endianness.py, and
fix the typo everywhere. This is in preparation to call the script in
CI on all repositories.
Related: OS#5884
Change-Id: Idc4af9098ba1de26243464c772d6ea8be330646a
Add it, so a follow-up patch can use it in gsm0808_dec_channel_type
where 3GPP TS 48.008 § 3.2.2.11 refers to "if octet 3 indicates speech
or speech + CTM Text Telephony".
Related: OS#4393
Change-Id: Iaf12202c89b68290c2121bc016d08b9200a7278a
Previous SI10 patch added function without exposing it via public header.
Let's fix this.
Fixes: 600d4eeab7
Change-Id: Ia7530e9c8a21f6f99f3aac7baea5cbb38763c4f3
This module provides several operations on network devices
(interfaces), like monitoring changes, setting addresses, routes, link
state, etc.
It also supports managing network interfaces on several different netns
concurrently.
These functionalitites will be used by the tun module included in a
follow-up patch.
Change-Id: I7a00c0445a89e088676a4897061b65196d9197f1
Write a new API and implementation to manage network namespace related
operations.
This will be used by the upcoming tundev module.
Change-Id: I0f2fba2fa42250a07211a7b7f479498f27c529da
There are some parts of libosmogsm which are not really GSM specific,
but rather ISDN bits that were inherited by GSM. This includes the
I.460 multiplex as well as the core LAPD protocol.
Let's move those bits to its own libosmoisdn library, before we add
more ISDN specific bits to the wrong place.
Backwards-compatibility is created by making libosmogsm depend on
libosmoisdn, and by providing wrapper include files for source
compatibility.
Change-Id: Ib1a6c762322fd5047be3188b1df22408ef06aa50
When someone is modifying a given library there's no need to be looking
at a common file contains tons of lines from different libraries.
Furthermore, this removes the need of "nobase" autofoo prefix, hence
following the usual directive of having one Makefile per directory.
Change-Id: I785891c2f89114bf8303c799094b637d3d25ac71
Implementation is imported from osmo-ggsn.git
97f60e3dca581797007524e0006ca9fafad59713 in46a_netmasklen() and adapter
to work with an osmo_sockaddr.
This will be used by osmocom-bb's "modem" app.
Change-Id: I75e75e251c6776801fffdde745aebedf21c68799
C/C++ only implements a so called "truncated modulo" function. Lets also
add a floored and an euclidian modulo function to be more complete.
The functions will be used to generalize the following Change:
I5fb2b0ada8d409730ac22963741fb4ab0026abdd
Change-Id: If61cd54f43643325c45f64531c57fe4c5802a9cf
So far ctrl interface did not allow to specify port to bind to.
Let's fix this and make it consistent with the way vty bind works.
N. B: the functions which ignore port configured via vty are marked as deprecated,
the sw which uses them should be ported to either newly added ctrl_init_default()
or simplified ctrl_interface_setup()
The similar change for vty interface will be addressed via separate patch series.
Related: OS#5809
Change-Id: I0fd87fd41fd3ac975273968d24f477daa3cd3aa9
The problem with most of the existing gsm0808_* functions in this file
is that they assert() too much, assuming that their callers always pass
perfectly valid input parameters. But this is impossible on practice,
as there can be bugs in complex projects using them, liks osmo-bsc.
It was reported by a customer that a heavily loaded osmo-bsc crashed a
few times, dropping more than 100 sites without network coverage for
a few minutes. As was revealed during the investigaion, it crashed
due to a failing assert at the end of enc_speech_codec():
OSMO_ASSERT(sc->cfg == 0);
The problem is that somehow osmo-bsc is passing an unexpected sc->cfg
value to gsm0808_create_ass_compl2(), in particular 0x02, while the
given sc->type value (GSM0808_SCT_HR1) implies that there cannot be
any configuration bits on the wire.
The reason why and under which circumstances this can be happening
is not clear yet, but what we agreed on so far is that the library
API should be enforcing correctness of the input parameters in a
less agressive way, rather than aborting the process without
letting it any chance to recover.
Modify the original gsm0808_enc_speech_codec[_list]() functions, so
that a negative value is returned in case of an error. Rename them
and add backwards compatibility wrappers, because it's public API.
A separate patch making use of the new API follows next.
Change-Id: I199ffa0ba4a64813238519178155dfc767aa3975
Related: SYS#6229
We've started to encapsulate a varieth of ISDN related formats
as sub-types to GSMTAP_TYPE_E1T1 for quite some time. Let's add
some more formats, such as V5EF, V.110, V.120, X.75 and H.221
For the HDLC based V5EF, V.110, V.120 and X.75 the payload format is
clear. For V.110 and H.221 we will need to specify how the actual
payload looks like.
Change-Id: I8dee0f730cf91d6f9133d5c57f653e669ec8d598
The newly-introdiced pragma to disable strict-prototypes checking works
in C, but creates a -Werror=pragmas error in C++ code:
In file included from osmo-trx.cpp:45:
/build/deps/install/stow/libosmocore/include/osmocom/vty/logging.h:10:32: error: option
‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++ [-Werror=pragmas]
#pragma GCC diagnostic ignored "-Wstrict-prototypes"
So let's also suppress those errors for that one line of code...
Change-Id: I85596cf4538d7a8c522f4bce1620a2d19e2a910e
Since March 15th 2017, libosmocore API logging_vty_add_cmds() had its
parameter removed (c65c5b4ea0). However,
its declaration in C file didn't contain "(void)", which meant the
number of parameters is undefined and thus compiler doesn't complain.
However, in recent Change-Id I84fd99442d0cc400fa562fa33623c142649230e2
we changed the declaration to '(void)' to allow building with
-Wstrict-prototypes. This caused downstream build-failures of osmo-mgw (1.4.0)
and osmo-e1-recorder (master).
So let's make one very small-scoped exception here.
Change-Id: Iadb54848b67db937b640dc2102dddb6e708a6a9f
Unfortunately "-std=c99" is not sufficient to make gcc ignore code that
uses constructs of earlier C standards, which were abandoned in C99.
See https://lwn.net/ml/fedora-devel/Y1kvF35WozzGBpc8@redhat.com/ for
some related discussion.
Change-Id: I84fd99442d0cc400fa562fa33623c142649230e2
Those are similar to existing *msgb_alloc*() functions but allows
to change the size of destination msgb provided it fits the
data from source msgb.
Change-Id: I36d4c16241d19f0f73c325be4d0e0bdef6813615
Signed-off-by: Max <msuraev@sysmocom.de>
Harald Welte
Eric Wild
Vadim Yanitskiy
Pau Espin
Oliver Smith
Daniel Willmann
Neels Hofmeyr
Philipp Maier
Max