This will be needed for the modem application, and is also used
in a follow-up commit adding support for parsing SI13 Rest Octets.
Change-Id: I8e0f826c9b2a886f94624176e34e7d197e93d25f
Related: OS#5500
Sometimes I am seeing error messages like this:
DCS ERROR Failed to write BA list
The problem is that there can be several BA entries which need to
be written, and for each of them we're calling fwrite() twice.
This function returns number of items written, so the final sum
of returned values would be: len(BA list) * 2. Thus expecting
it to be 2 regardless of len(BA list) is wrong.
Fix this by checking the sum in each iteration, not at the end.
Take a chance to refactor the code and move to a function.
Change-Id: Id8bc216c146127d9c9995379c9e56450d328f46d
This is a partial revert of 8f04fa9758.
The GAPK based audio I/O implementation of the mobile app is now capable
of handling TI's specific TCH frame format, which can be configured via
the VTY interface ('io-tch-format ti'). TCH frames in this format are
different from the ones in RTP format and may have different length and
different bit ordering. Remove voice_frame_verify().
Change-Id: I6113ba443e65ddaae091b643af54c873b7da4de8
Related: OS#3400
Do not assert() in gsm_recv_voice(), because channel release does
not happen immediately and the PHY may be still sending TCH frames.
Change-Id: I8943ee9bd46afc96e6d7cfd52c95c34fd311ce11
Related: OS#3400
This change introduces a new feature to the mobile application -
audio I/O support, which allows the user to speak right from the
host side running mobile through its ordinary mic and speakers.
The audio I/O is based on libosmogapk [1][2], which in its turn
uses the ALSA sound system for the playback and capture. This
is a new optional dependency of mobile, which is automatically
picked up if available during the build configuration. Whether
to depend on it or not can be controlled using '--with-gapk-io'.
The API offered by libosmogapk implies to use the processing chains,
which generally consist of a source block, several processing blocks,
and a sink block. The mobile app implements the following chains:
- 'pq_audio_source' (voice capture -> frame encoding),
- 'pq_audio_sink' (frame decoding -> voice playback).
both taking/storing TCH frames from/to the following two buffers:
- 'tch_fb_ul' - a buffer for to be played DL TCH frames,
- 'tch_fb_dl' - a buffer for encoded UL TCH frames.
The buffers are served by a new function gapk_io_dequeue().
[1] https://gitea.osmocom.org/osmocom/gapk/
[1] https://osmocom.org/projects/gapk
Change-Id: Ib86b0746606c191573cc773f01172afbb52f33a9
Related: OS#5599
This way we can avoid allocating another msgb and enqueue the given
msgb directly to the write queue of the MNCC socket.
Change-Id: I29305866e61a0bc3bd082108af6a9ba8ff86bcf2
Related: OS#5599
Do not send voice frames to the external MNCC unconditionally.
Add a new I/O handler type for the external MNCC application.
Change-Id: I406b169963e6654110329d741728fa12c8c8eeec
Related: OS#5599
This is needed to avoid sending voice frames to the L1PHY without
having to use MNCC specific struct gsm_data_frame.
Change-Id: I37241555cd648a8e2b57fa072c708f93cd1ba5a9
Related: OS#5599
The idea behind checking the ch_type in gsm48_rr_tx_voice() was likely
to prevent sending of the (LCR originated) Uplink TCH frames before
the actual traffic channel is established/modified.
The problem is that this check allows TCH/F frames, but not TCH/H.
Most likely, TCH/H was forgotten or never tested. Fix this.
Change-Id: I06e84ad47bafd4676af0e136b825e77471587b23
Related: OS#5599
According to 3GPP TS 04.08, section 3.4.6.1.3 "Abnormal cases"
of "channel mode modify procedure", if the MS doesn't support
the indicated channel mode, it shall retain the old mode and
return the associated channel mode information in the
ACKNOWLEDGE message.
Previously, if an indicated mode is not supported, we used to
indicate the 'CHAN_MODE_UNACCT' RR case without sending the
ACKNOWLEDGE message. Also, the result of gsm48_rr_set_mode()
was ignored. Let's fix this!
Change-Id: I952436ec796273e56341f9d3492b4a3b3a5dc410
Related: OS#5599
Some L1PHY targets (e.g. Calypso based Mot C1xx phones) have built in
microphone and speaker. Some targets do not have them. Currently we
unconditionally instruct the L1PHY to handle TCH frames internally.
Make this behavior configurable via the VTY interface.
Change-Id: I131f213ef7c2736f7310f0183b83f3bc3064cd98
Related: OS#5599
Since the mobile application is potentially able to maintain
multiple MS instances, it's better to have a possibility to
choose an MNCC (Call Control) handler per each MS separately.
This change removes the command-line option '-m', which was used
for enabling the external MNCC. Now it's possible configure the
MNCC handler for each MS via the VTY interface and settings.
The following MNCC-handlers are available:
- internal - built-in MNCC-handler (default);
- external - external MNCC-handler via UNIX-socket (e.g. LCR);
- dummy - dummy handler without CC support.
Change-Id: I2df91c7a79ba5c39bc6ceae900ef649129dd0346
Related: OS#3400
Similar to rsl_dec_chan_nr(), this function may also fail, leaving
the given struct tlv_parsed uninitialized.
Change-Id: I13f2a97eeff78ca8ed7d0a2844e4fca430ec7768
Related: OS#5599
The rsl_dec_chan_nr() may fail to decode RSL channel number, so
variables ch_type/chan_ss/chan_ts would remain uninitialized.
Change-Id: I9ab18bdaf41a29fcd32a7060668ef9db07b8cf7e
Related: OS#5599
Previously the MNCC socket path was generated automatically,
using concatenation of the '/tmp/ms_mncc_' prefix and MS name.
Let's allow the user to specify this manually, keeping the same
naming generation method for default value.
Change-Id: I643356ac579bc5e765f668265ec803b22a73739c
Related: OS#3400
This reverts commit 1a8a80aeae.
We currently get ALL SI messages wrong - the protocol disseminator is
accidentally being used as SI msg type, and
6=radio resources management - but 6 is also type=si5ter.. so all SI we
receive end up being parsed as SI5, what a coincidence!
Change-Id: I3822f74295920680a935f3031c642ba00162d09d
Do not send a dummy authentication response with the test sim.
Fixes: 39dc9c46 ("mobile/subscriber.c: consider GSM_SIM_TYPE_SAP too")
Change-Id: I0ee910c171d383fb2cdcaf5eb54eafe18da3430b
Remove the paragraph about writing to the Free Software Foundation's
mailing address. The FSF has changed addresses in the past, and may do
so again. In 2021 this is not useful, let's rather have a bit less
boilerplate at the start of source files.
Change-Id: I73be012c01c0108fb6951dbff91d50eb19b40c51
Previous code relied on abort() switching sigaction to SIG_FDL +
retriggering SIGABRT in case the signal handler returns, which would
then generate the coredump + terminate the process.
However, if a SIGABRT is received from somewhere else (kill -SIGABRT),
then the process would print the talloc report and continue running,
which is not desired.
Change-Id: Ied0f47378a5d348b857424adb5c874c1c093b485
Fixes: OS#4865
I was quite confused why I constantly see a bit error rate reported
by gsm48_rr, while at the same time the actual L1CTL_DATA_IND did
all state num_biterr == 0.
So the log statement was broken ...
Change-Id: I09bb6c606a8437b213bb444949c78a7c8a10542c
For more information, see 3GPP TS 44.014, sections:
- 5.1 "Single-slot TCH loops", and
- 8 "Message definitions and contents".
This feature has nothing to do with the Mobility Management, so
let's handle GSM48_PDISC_TEST messages in the Radio Resources
layer implementation (gsm48_mm.c -> gsm48_rr.c).
Change-Id: If8efc57c7017aa8ea47b37c472d1bbb1914389ca
L1CTL handling code should not be involved in such high level checks, so
while at it, move the check into a separate function in gsm48_rr.c and
add a length check. gsm48_rr_tx_voice() is the only caller of
l1ctl_tx_traffic_req().
Related: SYS#4924
Change-Id: Iba84f5d60ff5b1a2db8fb6af5131e185965df7c9
Vadim Yanitskiy
Vadim Yanitskiy
Pau Espin
Eric Wild
Oliver Smith
Harald Welte