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

Cleanup common_lib.h

This change reduces the number of dependecies of common_lib.h and simplifies
the task of implementing an external OAI radio library.

Merge remote-tracking branch 'origin/vrtsim-convolution-acceleration' into integration_2026_w14 (!3696)

Acceleration of channel convolution

Added two versions of channel convolution:
- accelerated via threadpool
- accelerated using CUDA

Remove a lot of unused code, defines, and config options

Remove unused header files and defines.

Slightly clean up gnb_config.c by removing all _IDX variables. Remove
these unused parameters:

- MACRLCs.[0].num_cc
- MACRLCs.[0].local_n_portc
- MACRLCs.[0].remove_n_portc
- MACRLCs.[0].remote_s_portc
- MACRLCs.[0].remote_s_portd
- L1s.[0].num_cc
- L1s.[0].local_n_portc

Switch xran lib repo to https://github.com/openairinterface/o-du-phy.git

Also remove intermediate variable eth_params_n that is not used
anywhere.

Remove the gNB_MAC_INST.eth_params_s, since it's only purpose is to
store what can be on the stack.

For the Aerial log message, don't print an empty prefix but what is
actually used for Aerial.

- remove test_multipath and test_noise from ChanelSim tests of
  RAN-Channel-Simulation pipeline - will be executed together with the
  other CUDA-enabled unit tests

- enable configurable dockerfile, runtime-opt, and ctest-opt parameters in
  the XML file for the Build_Run_Tests step
- pass runtime options to `docker run` to support ctest execution with CUDA
- allow additional ctest options for selective test execution and labeling

These parameters are not used.

- add benchmark_channel_pipeline to CTest
- add test_channel_pipeline to CTest
- add `cuda` label to CUDA-dependent tests for easier execution and
  filtering

This change removes the cudaDevAttrIntegrated check and only requires
pageable memory access. This change allows to run GPU accelerated
channel convolution on GH machines.

Similar like parent commit, but for L1.

The indices are brittle and might be wrong. Instead, use the option name
(via gpd()) to look up config options. This will also simplify the
removal of unused parameters, as we don't have to update all indices.

Remove leading CONFIG_STRING_, as it is just repetitive and adds noise.
The constants are both short(er) and sufficiently self-explanatory
without it.

RRC/E1 bugfixes: handle missing UE context, don't send E1 msg if no PDU session

See individual commits

Update doc: split RUNMODEM.md, clarify USRP-specific workarounds

This reworks the documentation:
- split up RUNMODEM.md into separate documents for gNB, UE, NTN
- explains USRP workaround and patches
- makes a standalone UE doc file that explains UE-specific configuration
  & modes
- better explains physical simulators
- adds a document on tracy
- cleanup

It can happen that a message is delayed, but then no UE is found for
such message, e.g., something is delayed but the UE context is deleted
in the meantime:

    [02:23:16.320730] [NR_RRC] I [--] (UE ID 3 RNTI d2b1) Remove UE context

    Assertion (ue_context_p) failed!
    In rrc_delay_transaction() /oai-ran/openair2/RRC/NR/rrc_gNB.c:191

In that case, don't delay the message further -- all handlers gated by
this function will check for the UE context and abort the transaction if
not present.

Abort message processing if no UE can be found, which is what is done in
most other messages.

It can happen that no PDU session can be setup (e.g., PDU session
already setup). Check that there is at least one before triggering the
message.

Also initialize bearer_req.gNB_cu_cp_ue_id early to avoid uninitialized
IDs (e.g., when no PDU session to be setup).

CI: fix Aerial conf for test with 30 MHz BW

More compilation improvements

Mostly to decouple NR files from LTE headers.

At least in one instance, ulsch_input_buffer_array, using an LTE constant in
NR code was quite dangerous because the buffer in NR could easily be larger
than what the LTE constant foresee.

UE: Fix CSI RS Measurement

1. Fix regression introduced in !3834.
2. ZMQ has no interference or artificial noise so the interference plus noise
   measured is always 0. nr_csi_rs_pmi_estimation() returns SINR as 0 if noise
   is 0 which reports CQI as 0. This fix computes SINR if noise is 0 instead of
   returning.

UE: Implement SUCI Profile Scheme A

This MR modifies the nrUE to support Profile Scheme A based SUCI generation as
outlined in TS 33.501 §C.3 Elliptic Curve Integrated Encryption Scheme (ECIES),
this further extends SUCI generation, which currently only supports the NULL
Scheme.

Changes:
- Extend UICC structure for SUCI parameters.
- Add cryptographic primitives (Curve25519, X9.63 KDF).
- Add an abstracted function to transfer digit strings into their corresponding
  BCD value.
- Updates SUCI generation to support Profile Scheme A.
- Updates NAS SUCI encoding to support hexadecimal cryptographic output in
  addition to BCD encoded MSINs.

Notes:
When a configuration file specifies an unsupported Profile Scheme, the NAS layer
triggers a fatal error. This occurs either because Profile Scheme B is
unimplemented or the build uses OpenSSL < 3.0, which lacks Curve25519 and X9.63
KDF support, ensuring users are informed of the incompatibility. Support for
Profile Scheme B (TS 33.501 §C.3.4.2 Profile B) can be implemented at a later
stage using P-256-based encryption.

The implementation of SUCI Profile Scheme A was tested against Open5GS’s core
implementation. OpenAirInterface’s cn5G does not yet support Scheme A and should
be extended to include it in a future update.

Assisted-by: Claude:claude-sonnet-4-6

This allows to compile physical simulators by compiling only tests with
"ninja tests". It fixes a regression.

Fixes: ec8efe1b ("Unify physim test definition")

rename and take out gold generic function from lte files to specific file to avoid cross-compilation

This change reduces the number of dependecies of common_lib.h and simplifies
the task of implementing an external OAI radio library.

Merge remote-tracking branch 'origin/hotfix_layer_mapping_aarch64' into integration_2026_w14 (!4021)

hotfix for 4 layer mapping on aarch64

This hotfix fixes a small bug appearing on aarch64 in the 4-layer PDSCH mapping
function. It was an error in the original implemntation.

Extend UICC configuration parsing to provide: routing_indicator,
protection_scheme, home_network_public_key, and home_network_public_key_id.
Use the protection_scheme value to decide what SUCI Profile Scheme to
apply during SUCI generation. Add support for Profile Scheme A which
provides ECIES-based encryption using Curve25519 and X9.63 KDF as outlined
in TS 33.501 Section C.3.4.1 Profile A.

When a configuration file specifies an unsupported Profile Scheme,
the NAS layer triggers a fatal error. This occurs either because
Profile Scheme B is unimplemented or the build uses OpenSSL < 3.0,
which lacks Curve25519 and X9.63 KDF support, ensuring users are
informed of the incompatibility.