Merge remote-tracking branch 'origin/remove-globale-ul_ch_estimates' into integration_2025_w12 (!3310)

remove globale llr_layers to save memory, improve CPU, simplify code

Merge remote-tracking branch 'origin/remove-global-ul_ch_estimates_time' into integration_2025_w12 (!3308)

remove ul_ch_estimates_time to save memory

remove ul_ch_estimates_time that saves 50MB memory to access in RAM, and
make better quality scope data passing (no race)

Add support for ARM build pipeline

Modify the existing python code to be able to build images where the
image tag can be prepended with a prefix, here arm_. This is preparatory
work to create the ARM build image pipeline, and reuse the existing
internal registry on porcepix to have x86 and ARM images coexist.

Fix various bugs in the build system to allow to build on a system with
as many cores as gracehopper.

Also, fix two programs (usim, nvram) to work correctly under ARM.

Merge remote-tracking branch 'origin/add_sigint_handler_nr_physimulators' into integration_2025_w12 (!3320)

Miscelaneous improvements in PHY simulators

1: Add a SIGINT handler to NR PHY simulators

When using T2 virtual functions, it is important to properly stop DPDK
and free the device.  Otherwise the virtual functions may be blocked and
a restart of the admin application is necessary.

If not carefully done, such kind of operation can lead to losing cores
to DPDK processes that cannot be stopped.  This can lead to situations
where the machine is locked and can only be unlocked by a power cycle.
Always properly stopping DPDK and freeing the device reduces the risk of
such situation to happen.

Up to now, SIGINT was shutting down the PHY simulators without freeing
the device.  This commit adds a signal handler to handle SIGINT in a way
that allow to properly free the device.

This feature is added to all the NR PHY simulators whether they use T2
or not in case it is now or later of any use.

2: Make nr_ulschsim functional

There were two issues that were making nr_ulschsim non functional:

1. The channel output was not copied to decoder input (llr array)
2. The test on decoding successful outcome was wrong

The result was that nr_ulschsim was succesfull whatever were its
arguments.  This changeset fixes the two issues so that nr_ulschsim is
now functional.

Harmonize and update Frequency Range computation to the current values
specified by the standard

3GPP TS 38.101-1 Version 19.0.0 Table 5.1-1: Definition of frequency
ranges

- FR1 from 410 MHz to 7125 MHz
- FR2 from 24.25 GHz to 71 GHz

Fix long RACH regression

Add some missing functionality that was not merged in !3088.

feat(nr_unitary_common): Add banner and apply clang-format to openair1/SIMULATION/NR_PHY/nr_unitary_common.c

1. Change the name of `openair1/SIMULATION/NR_PHY/nr_dummy_functions.c` into `openair1/SIMULATION/NR_PHY/nr_unitary_common.c` for naming coherence after adding the SIGINT handler which is not a dummy function.
2. Instead of being built once for every NR PHY simulators, the common functions source file is built once as an object and linked to each simulator.

After the parent commit, the registry might contain prefixed images.
This commit adds the functionality to pull such prefixed image. Since we
rename the pulled image (to have a consistent name, from whichever
registry we might pull), remove the prefix as well so that it can be
used with other CI functionality (remove image, use in test, ...)

Examples for renaming:
- pull from internal_registry for x86
  internal_registry/oai-gnb:branchA => oai-ci/oai-gnb:branchA
- pull from internal registry for ARM with "arm_" prefix
  internal_registry/oai-gnb:arm_branchA => oai-ci/oai-gnb:branchA
- pull from x86 other registry (e.g., openshift)
  openshift/namespace/oai-gnb:branchA => oai-ci/oai-gnb:branchA

The only currently viable way to push ARM images to our registry is to
use a custom tag prefix. Modify the python test code to specify such a
tag, and default to "" (no prefix).

After the preceding commits, it's now possible to build images on ARM.
Add a specific "native_arm" build kind to only build what we need as of
now (do not only call it "arm", as that would match the kind
"build_cross_arm64").

Add the corresponding XML. Pushing of images is disabled, as this does
not work as of now.

The (existing) Aerial pipeline on devkit uses an older version of nvipc,
which is upgraded on gracehopper. Use a glob to match them equally,
which also aligns this code with the corresponding Dockerfile, which
already uses that glob.

Use the right type for variable, as getopt_long() returns an int. Using
char is not a problem on x86, but prevents the return of -1 in case of
parameter reading end. This led to infinite loops on ARM, which is fixed
through the variable type change. An additional counter measure (showing
the problem) would be to print and error out when reading an undefined
parameter, which is added here as well.

This has been forgotten when making the same change for getopt() in
cf985460 ("getopt() returns int").

Dockerfiles hardcoded one copy operation to x86; generalize to capture
ARM as well. Since the target directory cannot have any globs, we need
to manually check the right directory, then move the file.

Note that this is only necessary since we are forced to switch the
compiler, as Ubuntu's default gcc-11 does not work with FlexRIC. When
upgrading to Ubuntu 24, these lines should disappear and asan be
installed as normal. See commit 94497435 ("Upgrade CI images to
Ubuntu 22").

SCTP: avoid assert on partial SCTP message

The receive buffer for SCTP, before this branch, is 8192. If a message
is larger, we receive only a partial message, which makes the gNB abort.
Remove the abort to not be susceptible to a message intended to crash
the gNB.

also, increase the receive buffer to be more forgiving for large messages

Closes: #920

Disable EPS NAS security algorithms in 5GMM UE capabilities

OAI nrUE is not supporting multiple RATs, therefore the EPS NAS security
algorithms bit in 5GMM UE capabilities is not relevant.

This bit is only relevant if N26 interface is supported by the AMF and
the UE is supporting S1 mode, meaning that the UE is connected to a 4G
LTE network,  via the S1 interface (eNB - MME/SGW). When the UE performs
an inter-system change from N1 mode to S1 mode, it transitions from 5GC
to the EPC: at network level this happens over the N26 interface (which
connects the 5G AMF to the 4G MME).

In this transition is where the EPS security context becomes relevant:
the UE does not know about the N26 interface, however is the AMF that
can tell the UE, e.g. during the registration procedure, if the UE sets
the S1 mode bit to "S1 mode supported" in the 5GMM capability IE, and
the AMF supports the N26 interface, the AMF will include the Selected
EPS NAS security algorithms IE in the SECURITY MODE COMMAND message,
which is what happened in #915.

Closes: #915

Even though the remaining NR PHY simulators do not use the T2, we may still feature them with a SIGINT handler for proper termination on SIGINT and for a matter of completeness.
The remaining NR PHY simulators are:
* nr_pbchsim
* nr_prachsim
* nr_psbchsim
* nr_pucchsim

There was two issues that were making nr_ulschsim non functional:
1. The channel output was not copied to decoder input (llr array)
2. The test on decoding successful outcome was wrong

The result was that nr_ulschsim was succesfull whatever were its arguments.
This commit fixes the two issues so that nr_ulschsim is now functional.

When using T2 virtual functions, it is important to properly stop DPDK and free the device.
Otherwise the virtual functions may be blocked and a restart of the admin application is necessary.

Up to now, SIGINT was shutting down the PHY simulators without freeing the device.
This commit adds a signal handler to handle SIGINT in a way that allow to properly free the device.
This feature is first added to the PHY simulators that use the T2 which are `nr_ulsim`, `nr_dlsim`, `nr_ulschsim` and `nr_dlschsim`.

3GPP TS 38.101-1 Version 19.0.0 Table 5.1-1: Definition of frequency ranges
- FR1 from 410 MHz to 7125 MHz
- FR2 from 24.25 GHz to 71 GHz

Remove unused NR UE PHY unit tests

Old dead code that won't even compile and that is not testing anything
relevant to current state of code

* this is only relevant if N26 interface is supported by the AMF
  and the UE is supporting S1

closes #915

The receive buffer for SCTP, as of this commit, is 8192. If a message is
larger, we receive only a partial message, which makes the gNB abort.
Remove the abort to not be susceptible to a message intended to crash
the gNB.

Closes: #920

Integration: `2025.w11`

Closes #848

See merge request oai/openairinterface5g!3309

* !3306 Add a new CI label: nrUE
* !3303 remove wrong assertion for B4 PRACH format
* !3296 fix(nrLDPC_decoder): fix numIter increment
* !3150 Rework of NR UE RA procedures
* !3305 CI: Fix timeout for OC Deployments
* !3307 Add CI UE test for RA with C-RNTI
* !3271 Handle changing N_TA_offset correctly
* !3313 Small fix for jenkins message formatting

Merge remote-tracking branch 'origin/fix-jenkins-message-formatting' into integration_2025_w11 (!3313)

Small fix for jenkins message formatting

Add a new CI label: nrUE

Added handling of the nrUE label which limits the amount of CI tests to run. Only tests that use nr-uesoftmodem or phy simulators are triggered.

See merge request oai/openairinterface5g!3306

Local_Cmd forces use to use absolute paths for copy operations (because
that makes more clear where files are being copied). Use the absolute
path to avoid the corresponding exception.

Various libraries in this commit use the log headers (that is the
direct dependency). The log headers in turn include the T headers
(transitive dependency). Building on gracehopper with its many cores
triggers the build of these libraries before T headers have been
generated.

To resolve this and force the generation of T headers before building
the libraries, correctly express their dependency on the log headers,
which in turn ensures that T headers have been generated.

Depending on log_headers is preferrable because it is really the headers
that we depend on. Using instead e.g., utils, would trigger build of
source files, that we don't need for these libraries.  This commit is
part of a larger cleanup that I have that is not merged yet. Follow-up
work will generalize this in the repo, and ensure that every(!) library
builds.

We have to add CONFIG_LIB, as the log module has a direct dependency
onto the configuration module (it uses it). I am not sure why this was
not relevant before.

T_headers needs to ensure that T headers have actually been created.
This can be forced by depending on generate_T.

Depending on the passed IP addr/host name, getConnection() will select
the right LocalCmd/RemoteCmd, which is better than hardcoded.

Added handling of the nrUE label which limits the amount of CI tests to run.
Only tests that use nr-uesoftmodem or phy simulators are triggered.