Integration `2026.w15`

* !4014 Microamp FR2 configuration file and documentation
* !4029 nr rlc: tolerate bogus data
* !4032 build_oai fixes: harmonize duplicate options, remove wrong --build-lib handling
* !3977 Further unused arguments cleanup
* !4009 Fix for NULL pucch-ResourceCommon at MSG4
* !4037 Increase reliability of ltebox start
* !4034 Prevent infinite loop on Single Entry PHR handling
* !4038 doc(record_db): explain how to use record_db
* fix compilation of T tracers with 'make'
* !3489 Thread-pool support for TX symbol processing.

See merge request oai/openairinterface5g!4033

Thread-pool support for TX symbol processing.

This MR adds thread-pool support for TX symbol processing. It allows modulation
/mapping/layer-precoding to run in parallel and offers a speedup of around 3
compared to single-thread execution. This is particularly important for large
bandwidths and 4 or more TX antenna ports where the precoding operation is quite
computationally-intensive.

Please see the description of !3489 for the performance comparison results and
the nr_dlsim timing measurements.

Extend the performance tuning section of documentation
to include explanation on the `--L1s.L1_num_tx_sym_per_thread` option
and on the AMD EPYC core complex behavior

Modification required after !3977 is merged.

doc(record_db): explain how to use record_db

Documentation for how to use record_db

Prevent infinite loop on Single Entry PHR handling

Avoid an infinite loop, and always pass HARQ PID. Also make more
functions static.

Signed-off-by: Sagar Arora <sagar.arora@openairinterface.org>
Reviewed-by: Nick Hedberg <nhedberg@nvidia.com>
Reviewed-by: Robert Schmidt <robert.schmidt@openairinterface.org>
Assisted-by: gpt-5.4

Increase reliability of ltebox start

The existing ltebox startup sequence on nepes occasionally fails. Running

sudo su -c 'screen -dm -S simulated_hss /opt/hss_sim0609/starthss' \
    && sleep 1 && sudo /opt/ltebox/tools/start_mme && sudo /opt/ltebox/tools/start_xGw \
    & sleep 1 && ip a show dev tun1

Reliably shows that no tun1 interface is created, because that takes around
1s itself. Increasing the second sleep to 2 reliably deploys it correctly.
Do the same for sabox and ltebox on nano for consistency.

Fix for NULL pucch-ResourceCommon at MSG4

Field pucch-ResourceCommon, used for ACK of MSG4, in some scenarios was
overwritten by RRCSetup before being used. Storing it in advance prevents
the segfault. In addition there is a clenaup of similar procedures at gNB.

* Add option `--L1s.L1_num_tx_sym_per_thread` for the softmodems and `-Y` for `nr_dlsim`
  to provide the number of symbols processed per thread.
  It defaults to 0 which makes that every symbols are processed in one thread.
* The last symbol processing task is processed in the L1 TX thread.

There is no real reason not to from what I can see.
Signed-off-by: Robert Schmidt <robert.schmidt@openairinterface.org>

When receiving single-entry PHR with HARQ PID -1
(nr_mac_process_mac_pdu() is called with such parameter in at least two
places), the error handling path calls continue skipping the accounting
of the current sub-pdu (pduP and pdu_len). This results in an infinite
loop. Fix by moving functionality into a separate function.

Fixes: 2e049363 ("RLC data ind: single call for complete TB at gNB")
Signed-off-by: Robert Schmidt <robert.schmidt@openairinterface.org>

Merge remote-tracking branch 'origin/further_unused_arguments_cleanup' into integration_2026_w15 (!3977)

Further unused arguments cleanup

More fixes for unused function arguments (see #1057),
add_compile_options(-Wunused-parameter) added in folders:
- nfapi
- openair2
- openair3
- USRP
- rfsimulator

build_oai fixes: harmonize duplicate options, remove wrong --build-lib handling

Correctly handle --build-lib such that missing arguments are still handled
properly. Harmonize, and remove useless code.

(the field in some scenarios was erased by RRCSetup before being used for ACK of MSG4, storing it in advance prevents the segfault)

The existing ltebox startup sequence on nepes occasionally fails.
Running

    sudo su -c 'screen -dm -S simulated_hss /opt/hss_sim0609/starthss' \
        && sleep 1 && sudo /opt/ltebox/tools/start_mme && sudo /opt/ltebox/tools/start_xGw \
        & sleep 1 && ip a show dev tun1

Reliably shows that no tun1 interface is created, because that takes
around 1s itself. Increasing the second sleep to 2 reliably deploys it
correctly.

Do the same for sabox and ltebox on nano for consistency.
Signed-off-by: Robert Schmidt <robert.schmidt@openairinterface.org>

This option is potentially dangerous as it might override custom user
options.
Signed-off-by: Robert Schmidt <robert.schmidt@openairinterface.org>

Functionality existed to print all output of asn1c on error, but the
form

    asn1c || cat X

makes the command exit with a 0 exit code (success). Fix by explicitly
returning non-zero exit code in this case:

    asn1c || ( cat X && false )
Signed-off-by: Robert Schmidt <robert.schmidt@openairinterface.org>

Both do practically the same. Harmonize them into one while guaranteeing
backwards compatibility.
Signed-off-by: Robert Schmidt <robert.schmidt@openairinterface.org>

Signed-off-by: Robert Schmidt <robert.schmidt@openairinterface.org>

This fixes two problem:

1. an omitted --build-lib library could yield strange grep errors. For
   instance, calling build_oai --build-lib --cmake-opt OPTION passed
   "--cmake-opt" to grep, that does not know this option. Handle by
   explicitly separating options and search pattern through --.
2. Even with this fixed, set -e triggered an exit because grep exits
   with non-zero error code. Remove set -e to have the error handling
   code pass.

With set -e removed, properly check that the build passes.

Update a log line to make it clearer.

Assisted-by: Claude:claude-sonnet-4-6
Signed-off-by: Robert Schmidt <robert.schmidt@openairinterface.org>

nr rlc: tolerate bogus data

Some unfriendly entity may play with the RLC module and send bogus data to
trigger funky behaviors here and there.

A report sent by Dhanish indentifies one such issue.

From analyzing this report, a possible scenario is the following. Unfriendly
entity sends an RLC PDU with: is_first=0 is_last=0 so=15 lenght of data,
whatever, let's say 1.

This PDU is put in the RX list.

Then later it sends another PDU (for the same SN, obviously), with: is_first=1
is_last=1 so=0 (well, since is_first=1, necessarily so=0; it is not transmitted,
see 38.322 6.2.2.3 for UM and 38.322 6.2.2.4 for AM) length=10, let's say.

This PDU is also put in the RX list, before the previous one.

Then the function sdu_full() returns 1, so reassemble_and_deliver() is called
and the 'while (pdu)' loop is executed for both PDUs. When the second (bogus
one) is processed, so==10 (after processing the first PDU) and the line: int
len = pdu->size - (so - pdu->so) is: int len = 1 - (10 - 15) which is not good.

So we detect the case 'pdu->so > so' and reject the SDU. We could label the
other entity as bogus, since no standard RLC implementation will produce such a
case, but let's remain friendly, even with unfriendly entities. (To be changed
later if needed.)

The problem was reported for RLC AM but is also present in RLC UM. (Not in RLC
TM, where there is no segmentation.) Note: according to the report, this bug was
found using a fuzzer described as 'AI-assisted custom 5G NR protocol fuzzer'. It
had to be said.

* Global timers were started and stopped
  in the TX symbol processing tasks
  which is not thread safe
* gNBs nrL1_stats.log now shows
  PDSCH generation time rather than
  layer mapping and precoding times

There was an indexing error in the calculation of the symbol offset `re_beginning_of_symbol`.
The symbol was tested to hold PTRS or DMRS based on the index of the
first symbol processed in the task and not based on the index of the
symbol as it should be.
Then PDSCH generation was not working properly for more than one symbol
per task.

removed warnings in nr_dlsch.c and changed return of do_onelayer
Co-authored-by: Robert Schmidt <robert.schmidt@openairinterface.org>

Microamp FR2 configuration file and documentation

Adding Microamp FR2 RU configuration file and updating documentation

Integration `2026.w14`

* !4021 hotfix for 4 layer mapping on aarch64
* !4022 UE: Fix CSI RS Measurement
* !4010 UE: Implement SUCI Profile Scheme A
* !4012 More compilation improvements
* !4027 CI: fix Aerial conf for test with 30 MHz BW
* !3948 Update doc: split RUNMODEM.md, clarify USRP-specific workarounds
* !4026 RRC/E1 bugfixes: handle missing UE context, don't send E1 msg if no PDU session
* !3996 Switch xran lib repo to https://github.com/openairinterface/o-du-phy.git
* !4020 Remove a lot of unused code and defines
* !3969 Acceleration of channel convolution
* !4023 Cleanup common_lib.h
* Clarifications on license
* !4017 CI: Add stage to push to local git repository

See merge request oai/openairinterface5g!4025

CI: Add stage to push to local git repository

This MR includes minor code cleanup and fixes for warnings reported by Jenkins.
It also introduces a new stage in ci-scripts/Jenkinsfile-GitLab-Container that
pushes the branch to a local repository after the merge. In a follow-up MR,
this local repository will be used as the source for cloning the branch,
replacing direct access to GitLab/GitHub.