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Change-Id: Ic21d1617ec4d8251ae87ad9abaacde67f3738748
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Change-Id: Ief8ca40c0e85efe340eaecb866a10f76ac2bfc98
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Change-Id: I214a16b60e0149a8b1cdcfd3c788cc56a1a40476
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Related: OS#5751
Change-Id: I82db9a15bc483a5447d86352512afaafa2bcfbb6
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Change-Id: I6ba88cd7bbd5b5ef42eb460679696f105c9158cb
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iofd_handle_send_completion()
msghdr must be detached, because subsequent callback at
iofd_handle_send_completion() may destroy the iofd (which in turn
frees this msghdr, if still attached) and frees the msghdr, causing a
double free.
Related: OS#5751
Change-Id: Ia349f73de2145fa360b20dd40deb73a8ffc71f07
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There is always a completion after cancelling a uring request.
Because uring requests use msghdr pointer as user data, we cannot just
free the msghdr after cancelling. Upon completion (received after
cancelling), the user data still points to the msghdr. To prevent a
use-after-free bug, msghdr is not freed, but detached from iofd
instance. Then upon completion, the msghdr (if it was detached from
iofd) is freed.
Additionally it is not required to keep IOFD_FLAG_IN_CALLBACK set
anymore, if there is a msghdr attached to iofd. As described above,
all msghdr get detached, if iofd is freed (uring request get cancelled)
during callback.
Related: OS#5751
Change-Id: Ic253f085dd6362db85f029f46350951472210a02
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Related: OS#5751
Change-Id: Ida63b74feecddf96bab7b2ade4e9ad216fe56e06
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io_uring will reject to transmit messages with length of 0.
Change-Id: I94be5ec7344d92157f7853c6c0ddf7007513ba8e
Related: OS#5751
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In order to receive a connect notification from SCTP socket,
poll/select event must be used instead of a write notification via
io_uring completion event.
Once the connect notification has been received, subsequent write
notifications via io_uring are used.
Change-Id: I4eca9ea72beb0d6ea4d44cce81ed620033f07270
Related: OS#5751
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Add support osmo_io operations resembling sctp_send() and sctp_recvmsg()
that is provided by libsctp of lk-sctp.
Change-Id: I89eb519b22d21011d61a7855b2364bc3c295df82
Related: OS#5751
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This relocation is necessary as the backend (osmo_io_fd or
osmo_io_uring) requires a different approach in handling connect
notifications. As a result, a function call has been introduced to
struct iofd_backend_ops.
In a subsequent patch, the process for the osmo_io_uring backend will
be modified to handle SCTP connect notifications using poll/select.
If connect notification is requested using poll/select, the file
descriptior must be registered to osmo_fd, using osmo_fd_register. If
read / write notification is requested by application, the file
descriptior must be registered also. A flag is used prevent calling
osmo_fd_register / osmo_fd_unregister multiple times, which would cause
a crash.
Change-Id: I905ec85210570aff8addadfc9603335d04eb057a
Related: OS#5751
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All the different procedures are placed in order, except this one.
Change-Id: If0877deca2bcbf40229c9c61f471112f1e8cdb0e
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Change-Id: I2a606047db88ea47317397a790611048dead6403
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In gsm0503_pdtch_decode(), we decode CS2 and CS3 as if no puncturing
was employed, reordering the coded bits and setting punctured ones
to 0 manually. Because of that, osmo_conv_decode_ber_punctured()
reports n_bits_total higher than we actually receive over the air.
Change-Id: I6b20cc450f25c48175a61da02644d66c08e22ece
Related: OS#6342, OS#6200
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GPRS coding schemes CS2 and CS3 (defined in 3GPP TS 45.003 sections
5.1.2 and 5.1.3, respectively) employ so-called puncturing, which
can be described as intentional removal of coded bits. The goal
of puncturing is to reduce the number of coded bits, so that they
fit into 4 bursts. The receiving side recovers punctured bits,
as if they were received corrupted.
The puncturing is also used for other channel types like TCH/F9.6,
TCH/F14.4, TCH/AFS and TCH/AHS, but only for CS2 and CS3 we're
doing puncturing/depuncturing *manually*. This explains why
we're seeing artificial bit errors only for CS2 and CS3.
gsm0503_pdtch_decode() should not be reporting punctured bits as
bit errors, fix this by using osmo_conv_decode_ber_punctured().
Change-Id: I024276d167e769396187998d881f8e7626461249
Related: OS#6342, OS#6200
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Change-Id: Iaece6d0fe42f173187baa5c87fcbe3cfc60c21fc
Related: OS#6342, OS#6200
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Change-Id: I72e7dab116229d908add3896ecb47b59e3001f1b
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Change-Id: Ida99f0fe149b234c738875527dd64b610d33e050
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Change-Id: Ibf2786f668ee7e4f5b6a9ef43f2141cd2d79b4e2
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Adjust osmo_timers_nearest_ms() to round up the remaining time.
Note that poll() has a granularity of 1 millisecond.
Previously, when rounding down the remaining time, osmo_select_main()
would return too early, before the nearest timer timed out.
Consequently, the main loop repeatedly called osmo_select_main() until
the timer actually timed out, resulting in excessive CPU usage.
By modifying osmo_timers_nearest_ms() to round up the remaining time,
we ensure accurate timeout calculations, preventing unnecessary CPU
consumption during the main loop.
The patch only applies to non-embedded version of libosmocore, because
the impact on embedded systems is not verified tested.
Related: OS#6339
Change-Id: I79de77c79af4d50d1eb9ca0c5417123ff760dca3
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These files must be present in the release tarballs regardless
of the configure options (ENABLE_LIBSCTP, ENABLE_SCTP_TESTS).
Change-Id: I8f530d6157b00907dd1b438100bb0fb300dfcd22
Related: OS#6349
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Change-Id: I8574cb00de820ab477eb5c4abd05d8e546ca89cc
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Change-Id: I489378705e19c6b09f2fa894ddea4b8a0dc0c7e4
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This fixes a -Wunused-function warning thrown by clang.
Change-Id: I45e9044f80e1f634c811e729f4314ec9bcf6a9ad
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This fixes a -Wbitwise-instead-of-logical warning thrown by clang.
Change-Id: I6ae0d13882ab7a6b1ca35ccd7f9a5e1d9cac911d
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This fixes a -Winitializer-overrides warning thrown by clang.
Change-Id: Id29237d212a05dec1c57bbfd53d9cb7e71ca0991
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Change-Id: I25e40853ace09fa98b614f3893eeba600be8fcdc
Related: OS#4396
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Let's be smarter and call the status update callback iff the V.24
flagmask was actually changed.
Change-Id: I9626d3e737d4e072fa163115c4cdf9ee6ee0968e
Related: OS#4396
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The mismatch for bcap_csd_2400_v22bis is expected, because octet 4
is not represented in 'struct gsm_mncc_bearer_cap' and the encoder
unconditionally hard-codes it to 0x88.
Change-Id: I4fc519c02b4fad8b0f40fa649d9de14b1183d10d
Related: OS#4396, OS#4394
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Change-Id: I203033e2b3c27cb8b258faf1ff3c5ec4c0083458
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The previous PDP-Type IE should have been a PDP-Address from the
start, since having only PDP-Type with no address is only a specific
case (dynamic addressing).
This becomes clear by looking at other similar protocols like:
* MAP: APN-Configuration IE has servedPartyIP-IP{v4,v6}-Address IEs
* Diameter S6b, 3GPP TS 29.272 7.3.35 APN-Configuration contains
Served-Party-IP-Address AVPs
* Diameter SWx, 3GPP TS 29.273 APN-Configuration.
* GTPv1C Ts 29.060 7.7.29 PDP Context containing PDP Address.
Since PDP-Type on its own really makes no sense, being it a special case
of PDP-Address, let's keep the IE by renaming it (keeping old name too
for API backward compat) and extend it to support lengths > 2 bytes.
Old implementation of libosmogsm gsup actually ignored lengths > 2
bytes, so we are safe acting against older implementations here, both
on the sending and receiving side on the wire.
The big drawback of this commit is that it breaks ABI compatibility due
to adding "struct osmo_sockaddr pdp_address[2];" to struct
osmo_gsup_pdp_info, which in turn affects shift of fields in struct
osmo_gsup_message. Unfortunately, there's not much that can be done to
improve the situation when adding the missing field, due to existing API
having the same struct for all messages. Ideally we'd have 1 union with
structs per message type inside, this way the ABI break would be far
less pronounced.
The GSUP test output change is becaue we now accept some of the len>2
cases for PDP-Type/Address IE which were being rejected since a couple
commits ago.
libosmogsm gsup code is now disabled in EMBEDDED mode, since it nows
depends on core/socket.h (struct osmo_sockaddr) which is not available
in EMBEDDED, and hence fails during build:
"""
In file included from /build/include/osmocom/gsm/gsup.h:45,
from /build/src/gsm/gsup_sms.c:28:
/build/include/osmocom/core/socket.h:15:10: fatal error: arpa/inet.h: No such file or directory
15 | #include <arpa/inet.h>
| ^~~~~~~~~~~~~
"""
Related: OS#6091
Change-Id: I775ff9c3be165d9f30d6ab55d03f99b6104eadd6
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Having both fields in an uin16_t integer makes it difficult and
confusing for users for no good reason. Let's have separate fields for
each of them.
The new fields are defined so that they are ABI compatible with previous
uin16 field.
Change-Id: Ie31c6080c90e468c01186259f2c42621e39b5cc6
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As documented in gsup.adoc, this field is expected to be 2 bytes.
This is only a intermediate step to showcase the related test scenarios
submitting IE with len > 2. The logic will be changed in a follow-up
patch when changing the IE to also encode/decode the missing Address
part.
Change-Id: I0d024a9a4fb10beeff39ac33a9d2ed02f88f4580
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This can be used in several protocols, such as GTP, GSUP, etc.
Related: OS#6091
Change-Id: I453ced42dd36df3a6ddb5db67093df5a22cad18c
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Change-Id: Icd5e38db1b99889ad15a2a4cbb83393292a54180
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Let's make those E1/E2/E3 bit combinations publicly available in
form of a lookup table (key is enum osmo_v100_sync_ra1_rate).
Add convenience macros for setting and comparing these bits.
This lookup table will be used by osmocom-bb.git.
Change-Id: I6d2f8e250df31c233a2741163113dc07515409ae
Related: OS#4396
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This reverts commit 7dc6d4a629a37bb081d62f6ce61f4e5ee0237247.
Reason for revert: other tests are failing
Change-Id: Ife4c49d1bb933e983ac68c57970c9c49b40e08be
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This ensures multithreaded logging attempts, in particular ones that do
nothing, do not hold the lock just for checking the level, which
interferes with other logging attempts.
Closes: OS#5818
Change-Id: I35f8dd9127dd6e7feae392094fd6b3ce2d32558d
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ITU-T recommendation V.110 defines Terminal Adaptor (TA) functions
for the connection of Terminal Equipment (TE) having standard V-series
interfaces to the ISDN. This patch brings "software" implementation
of the TA to libosmoisdn.
The primary user for this soft-TA is the mobile-side implementation
of CSD (Circuit Switched Data) in osmocom-bb. CSD is heavily based
on V.110, which is not surprising given that GSM is a "wireless ISDN".
Nevertheless, this code will likely also be useful in the context
of retro-networking.
Similarly to the existing V.110 code in libosmoisdn, the present
implementation aims to be functional and correct, rather than
efficient in any way. It also has several limitations, which are
not critical for the CSD use case, but eventually may be a problem
for other use cases in the context of retro-networking.
Therefore, the V.110 TA API should be considered _unstable_,
and may be subject to change in the future.
+-------+ +------+ B-channel +------+ +-------+
| TE1 |------| TA |~~~~~~~~~~~~~~~| TA |------| TE2 |
+-------+ +------+ +------+ +-------+
TE (also known as DTE) is basically a computer, having a V-series
(usually RS-232) connection to TA (also known as DCE). The TA acts
like a regular analog modem, except that it is not performing any
kind of modulation or demodulation itself.
The TE-TA interface is implemented by the user supplied callback
functions, configured during the allocation of a TA instance:
* .rx_cb() - receive call-back of the application,
* .tx_cb() - transmit call-back of the application,
* .status_update_cb() - status line update call-back.
In addition to that, the application (TE) can interact with the
V.24 status lines (circuits) using the following API:
* osmo_v110_ta_{get,set}_status(),
* osmo_v110_ta_{get,set}_circuit().
The Rx and Tx between TE and TA is always driven by the TA itself,
as a result of an interaction with the lower layer implementing
the B-channel interface. There is currently no buffering and thus
no way for TE to initiate transmission or pull data on its own.
The TA-TA (B-channel) interface is implemented by the following
functions, which are meant to be called by the lower layer
transmitting and receiving V.110 frames over certain medium:
* osmo_v110_ta_frame_in() - indicate a received V.110 frame,
* osmo_v110_ta_frame_out() - pull a V.110 frame for transmission,
* osmo_v110_ta_[de]sync_ind() - indicate a synchronization event.
The lower layer is responsible for finding the synchronization
pattern (if needed), aligning to the frame boundaries, and doing
the V.110 frame coding.
The D-channel signalling is behind the scope of this module.
Initial (Work-in-Progress) implementation by Harald Welte,
completed and co-authored by Vadim Yanitskiy.
Change-Id: I5716bd6fd0201ee7a7a29e72f775972cd374082f
Related: OS#4396
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Change-Id: I3ea7cbc8a51d310d9929ca5a805eb1d3d3880793
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Change-Id: Ie216bcf93b96610c46c6e616835a6793772e2baa
Related: e30d22a0 "tests/tdef: also test OSMO_TDEF_US and negative T values"
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This API predates commit 7b74551b9, which added support for millisecond
granularity to osmo_fsm. Let's do the same for the tdef FSM wrapper
API, allowing the millisecond precision without rounding-up to seconds.
Of course, this patch changes behavior of the existing API, but having
more precise state timeouts is not going to make the API user
experience worse.
The old behavior of using seconds is for kept for:
* OSMO_TDEF_CUSTOM -- still treated as if it was OSMO_TDEF_S.
* \param[in] default_timeout -- still expected to be in seconds.
Change-Id: I4c4ee89e7e32e86f74cd215f5cbfa44ace5426c1
Related: 7b74551b9 "fsm: Allow millisecond granularity in osmo_fsm built-in timer"
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Change-Id: I1c1503120c6c0e5479d8350fe762470bdb6266b8
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Change-Id: Id168c5115588b2dbc48605ee0bba13ccc9913bbe
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This commit fixes the following warning seen with CC=clang:
utils.c:376:6: warning: variable 'len' set but not used [-Wunused-but-set-variable]
int len = 0, offset = 0, ret, rem;
... and finally allows to build libosmocore with --enable-werror.
Change-Id: I0040ef20ba3fc53ee7ccefc4885170f333f80566
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This code predates 2cbe25f4, adding osmo_strbuf API and so using its
own append-to-strbuf implementation. Let's use the new generic API.
Change-Id: Ifdfd18eeef6a0932995063259f9f179b22e781de
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The member data[0] in struct osmo_ecu_state is used as an anchor to
attach private structs for a concrete ECU implementation. This works by
allocating more memory then struct osmo_ecu_state actually needs and
then using the excess memory to store the private struct of the concrete
ECU implementation.
However, this poses a problem since data[0] is at the end of the struct
it may land in an unaligned position. This also means that the struct we
store there is also unaligned.
We should fix this enclosing the public struct osmo_ecu_state into our
private struct fr_ecu_state. Then we can use container_of to cast from
osmo_ecu_state to fr_ecu_state and correct alignment is ensured as well.
Related: OS#6286
Change-Id: I28672856e8e8f47e04ffe09ee3e07b577108cdc7
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Change-Id: Ifcf377c3496a9e75404932a1aaba7d74888cf4cf
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Change-Id: I7f346dfbec9e724e905d26990a978495d3a9b030
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