There seem to be randomly occurring deadlocks when running the UE in the
CI. MR !3091 should fix this. While waiting for this, apply a workaround
by increasing the number of worker pools in the UE to 12.

Test for init_RA

A testcase for init_RA function.
The testcase redefines the following functions as stubs:

- nr_mac_rrc_ra_ind
- nr_write_ce_ulsch_pdu
- mac_rlc_data_req
- lockGet_ul_config
- release_ul_config
- remove_ul_config_last_item
- nr_ue_configure_pucch

These stubs can be used to check init_RA behavior

Prevent segfaults in gNB stack

Three fixes for segfaults, discovered while running with many UEs.
See commit messages for more details.

Merge remote-tracking branch 'origin/NR_UE_trigger_reestablishment' into integration_2024_w46 (!2777)

NR UE trigger for re-establishment

The implementation in this MR triggers RRC re-establishment at the UE in case
of radio link failure either for out of sync messages from lower layers or in
case maximum number of RLC retransmissions is reached.

/opt/oai-gnb/bin/nr-softmodem -O /opt/oai-gnb/etc/gnb.conf --sa --log_config.global_log_options level,nocolor,time --rfsimulator.options chanmod --telnetsrv --telnetsrv.listenaddr 192.168.71.150 --telnetsrv.shrmod ci
=================================================================
==7==ERROR: AddressSanitizer: odr-violation (0x7fce78b85be0):
  [1] size=4 'log_mem_write_side' /oai-ran/common/utils/LOG/log.c:78:14
  [2] size=4 'log_mem_write_side' /oai-ran/common/utils/LOG/log.c:78:14
These globals were registered at these points:
  [1]:
    \#0 0x7fce7b691658 in __asan_register_globals ../../../../src/libsanitizer/asan/asan_globals.cpp:341
    \#1 0x7fce7bd0c47d in call_init elf/dl-init.c:70

  [2]:
    \#0 0x7fce7b691658 in __asan_register_globals ../../../../src/libsanitizer/asan/asan_globals.cpp:341
    \#1 0x7fce7a5e2eba in call_init ../csu/libc-start.c:145
    \#2 0x7fce7a5e2eba in __libc_start_main_impl ../csu/libc-start.c:379

==7==HINT: if you don't care about these errors you may set ASAN_OPTIONS=detect_odr_violation=0
SUMMARY: AddressSanitizer: odr-violation: global 'log_mem_write_side' at /oai-ran/common/utils/LOG/log.c:78:14
==7==ABORTING
[INFO  tini (1)] Spawned child process '/opt/oai-gnb/bin/entrypoint.sh' with pid '7'
[INFO  tini (1)] Main child exited normally (with status '1')

* trigger re-establshemnt on DU: reset RLC counters on DRB 1
  for OAI UE, since SRB 1 does not work for lack of periodic
  measurements reports
* how is the re-establishment triggered?
  * a transmission on DRB 1 occurs
  * detection of a mismatch of RLC counters at the UE side
  * max number of RLC retransmissions reached
  * RLF detection
* verify re-establishment on CU: we ping the core from the UE; this
  sends packets on DRB, and because the sequence number mismatches, will
  trigger a reestablishment. We accept in the ping that a couple of
  packets might be lost; after ping is over, reestablishment must be
  done as well (else the ping will already fail).

Clip the input for -32768 because this will make different result in...

Clip the input for -32768 because this will make different result in
mult_complex_vectors() compared to C version

T tracer: support float types in traces

Trigger deregistration only in SA mode

Upon press of ^C, the UE triggers a NAS deregistration. This does not work
in do-ra or phy-test modes, because there is no NAS. Therefore, in non-SA
modes, just stop the UE directly.

This can potentially improve the 5G RFsim CI test case, because together with
a high RFsim timeout, the chances of the last HARQ status line being without
retransmissions is much higher. If that does not help, we can further increase
the retx threshold.

fix BSR report malformed, add SHORT BSR when it can (instead of LONG BSR)...

fix BSR report malformed, add SHORT BSR when it can (instead of LONG BSR)
simplify the code and make the code more explicit, but the may structure
remain (nr_write_ce_ulsch_pdu interface is complex, merging it into the
called would make simpler and more interstandable code), fix some asserts
related to this part of code

Similar to the previous commit, prevent the same segfault in RRC.

In some runs of a multi-UE deployment, we see segfaults because
cell_group->spCellConfig is NULL. We should not segfault in that case,
so check for spCellConfig.

When the UE list is full, the iterator will run through all
MAX_MOBILES_PER_GNB UEs. It expects that eventually the pointer is NULL,
which is not the case if we have MAX_MOBILES_PER_GNB (or it simply
depends on the following memory). So give one array entry more, to
ensure that the last one is NULL.

Clip the input for -32768 because this will make different result in mult_complex_vectors() compared to C version

UE: Set default SSB config

After initial sync the UE sets the ssb index bitmap in nrUE_config with
index obtained in initial sync. This allows UE to continue decoding PBCH
and stay synched with the gNB till SIB1 is received.

Upon press of ^C, the UE triggers a NAS deregistration. This does not
work in do-ra or phy-test modes, because there is no NAS. Therefore, in
non-SA modes, just stop the UE directly.

If the RLC cannot retransmit a package, 3GPP specs say that we should
declare radio link failure (RLF). Up to this commit, the code did
nothing though. In this commit, add a per-UE RLF callback; the RLC will
call into this function to signal that RLF has been detected through
maximum retransmissions on a particular RLC bearer.

select LCG that contains the highest priorit LC with data to transmit instead of the LC with maximum waiting data size

fix BSR report malformed, add SHORT BSR when it can (instead of LONG BSR) simplify the code and make the code more explicit, but the may structure remain (nr_write_ce_ulsch_pdu interface is complex, merging it into the called would make simpler and more interstandable code), fix some asserts related to this part of code

Integration: `2024.w45`

See merge request oai/openairinterface5g!3097

* !3048 Cleanup and refactoring at gNB initialization
* !3077 Address most thread safety issues in NR UE
* !3089 Improve cross-compile documentation
* !3092 Remove Interop-F1/Accelleran-CU testing pipeline
* !3096 Remove x86-specific instructions from telnet server
* !2949 Better polar decode
* !3070 CI: Add test with 4 DL layers, 60 MHz BW to SA-2x2 pipeline
* !3098 nr rlc: hotfix: test allocation valid before use
* !3090 Add UL PRBs Blacklist section to NR_SA_Tutorial_COTS_UE.md
* !3082 fix blocking bugs in command nr_dlsim -n100 -e27 -s35 -b 273 -R273 -x4 -y4 -z4
* !3100 CI: Remove 5g_l2sim files
* !3024 Set SA mode as default
* !3087 Remove some usage of the old CI sshConnection class
* !3074 CI: cleanup of cls_physim.py

Extract nr_ra_procedures.c into a separate library and add a testcase for init_RA function.

The testcase redefines the following functions as stubs:
 - nr_mac_rrc_ra_ind
 - nr_write_ce_ulsch_pdu
 - mac_rlc_data_req
 - *lockGet_ul_config
 - release_ul_config
 - remove_ul_config_last_item
 - nr_ue_configure_pucch

These stubs can be used to check init_RA behavior

CI: Cleanup of cls_physim.py

- Remove unused code and file
- Rework functions for CUDA and T2 log analysis
- Check if test was successful for nr_ulsim and nr_dlsim in
  RAN-gNB-N300-Timing-Phytest-LDPC pipeline