If a base station has multiple cells, it should be possible for UE to be handed
over from one cell into another, for example when UE crosses border of sectors.

So far we had only Inter-ENB Ho and now we are also adding configuration for
HO in between all own cells.

Tests will be added later as full tests for generic MultiRU.

We already had CA for LTE+LTE case. Let's also setup it for NR+NR and LTE+NR
cases as well.

Tests will be added later as full tests for generic MultiRU.

Similarly with cell_list, organize a loop in under nr_cell_list and emit
configuration for each NR cell we have.

Tests will be added later as full tests for generic MultiRU.

Only trivial space and comments changes in rendered gnb.cfg

So far CA was setup only for lte case and it is possible to simplify generation
of all pair of cells to be done without extra loop and state.

For uniformity with LTE where it already is.

We do not expose it in gnb schema because it will be exposed in both generic
LTE and NR schemas, but for ORS schemas I prefer to keep them intact myself.

Tests will be added later as full tests for generic MultiRU.

Diff for rendered configs:

$ ./pythonwitheggs slapos-render-config.py && git diff -w --no-index config/{old,out}
diff --git a/config/old/gnb.cfg b/config/out/gnb.cfg
index 5849bb924..b8a385a71 100644
--- a/config/old/gnb.cfg
+++ b/config/out/gnb.cfg
@@ -56,6 +56,7 @@
     subcarrier_spacing: 30,
     ssb_pos_bitmap: "10000000",

+    root_sequence_index: 1,
     inactivity_timer: 10000,

       // Handover
@@ -176,7 +176,6 @@
     intra_freq_reselection: true,
     q_rx_lev_min: -70,
     q_qual_min: -20,
-    root_sequence_index: 1,
     sr_period: 40,
     dmrs_type_a_pos: 2,
     prach: {

As with Radio Units organize a registry of cells and start to handle that
registry generally everywhere.

Cell registry is still populated from cell_list and slapparameter_dict.

Tests will be added later as full tests for generic MultiRU.

Rendered enb.cfg and gnb.cfg stay the same modulo one whitespace change.

Add code to organize a registry of Radio Units and handle that registry generally everywhere.

RU registry is still populated from cell_list and in practice there still can
be radio units only of the same type, but besides slaplte.load_ru_and_cell
which is aware of that, the rest of the code tries to do everything as if
RUs of different type could be present simultaneously.

Now it is not only lopcomm who can do multiCELL, but also sunwave and SDR as well.

Later we will change the loading to load RU descriptions from shared instances
and they won't be constrained to be Radio Units of the same type. But we need
to prepare a lot to be able to do that.

One more step forward towards MultiRU.

Tests will be added later as full tests for generic MultiRU.

--------

Appendix. Diff for rendered enb.cfg and gnb.cfg before and after this patch:

```
$ ./pythonwitheggs slapos-render-config.py && git diff -w --no-index config/{old,out}
```

```diff
diff --git a/config/old/enb.cfg b/config/out/enb.cfg
index 884483b0a..cafdf42be 100644
--- a/config/old/enb.cfg
+++ b/config/out/enb.cfg
@@ -1,24 +1,22 @@

-
 {
   log_options: "all.level=error,all.max_size=0,nas.level=debug,nas.max_size=1,s1ap.level=debug,s1ap.max_size=1,x2ap.level=debug,x2ap.max_size=1,rrc.level=debug,rrc.max_size=1,ngap.level=debug,ngap.max_size=1,xnap.level=debug,xnap.max_size=1,phy.level=info,file.rotate=1G,file.path=/dev/null",
   log_filename: "log/enb.log",

-
+  // Radio Units
   rf_driver: {
+      // default-RU 2T2R  (ors)
       name: "sdr",
       args: "dev0=/dev/sdr0",
-
       rx_antenna:"tx_rx",
       tdd_tx_mod: 1,
   },
-  tx_gain: 62,
-  rx_gain: 43,
-
+  tx_gain: [62, 62],
+  rx_gain: [43, 43],
   com_addr: "127.0.1.2:9001",
   // LTE core network
   mme_list: [
@@ -36,6 +34,8 @@

   // LTE cells
   cell_list: [
+
+    // default  (default-RU)
     {
       rf_port:      0,
       n_antenna_dl: 2,
diff --git a/config/old/gnb.cfg b/config/out/gnb.cfg
index fd57ca3dc..7818b4ea8 100644
--- a/config/old/gnb.cfg
+++ b/config/out/gnb.cfg
@@ -1,24 +1,22 @@

-
 {
   log_options: "all.level=error,all.max_size=0,nas.level=debug,nas.max_size=1,s1ap.level=debug,s1ap.max_size=1,x2ap.level=debug,x2ap.max_size=1,rrc.level=debug,rrc.max_size=1,ngap.level=debug,ngap.max_size=1,xnap.level=debug,xnap.max_size=1,phy.level=info,file.rotate=1G,file.path=/dev/null",
   log_filename: "log/enb.log",

-
+  // Radio Units
   rf_driver: {
+      // default-RU 2T2R  (ors)
       name: "sdr",
       args: "dev0=/dev/sdr0",
-
       rx_antenna:"tx_rx",
       tdd_tx_mod: 1,
   },
-  tx_gain: 62,
-  rx_gain: 43,
-
+  tx_gain: [62, 62],
+  rx_gain: [43, 43],
   com_addr: "127.0.1.2:9001",
   // NR core network
   amf_list: [
```

That data structure is really a dict, not list. It is more clear to name it appropriately.

-> Do the renaming but keep cell_list intact as described in JSON schemas so
   that external interface remains unchanged.

Rendered enb.cfg and gnb.cfg remain the same.

Not only inside rendered enb.jinja2.cfg and ue.jinja2.cfg because we will need
that information in slaplte and slaplte is imported by instance-enb and
instance-ue.

instance-enb and instance-ue currently setup that slap_configuration with
LTE/NR defaults to be accessible from enb.jinja2.cfg and ue.jinja2.cfg. But we
will soon need to have access to those defaults from slaplte.jinja2 as well,
and it will break if left as is because when slaplte is imported from e.g.
enb.jinja2 - it will work, but when slaplte is imported from instance-enb it
will break because parent of instance-enb (instance.cfg) does not setup
defaults in slap_configuration at that level.

The fix is to either duplicate slap_configuration at instance.cfg level, or to
switch access to the defaults to go via original default_* parameters.

We go the second way for simplicity.

software/ors-amarisoft: enb.jinja2.cfg: Switch internal ru.ru_type to be 'sunwave' for Sunwave M2RU Radio Unit

ru/libinstance and everything inside there already refer to that unit as 'sunwave'.
Do the same for uniformity in enb.cfg and because we already refer to Lopcomm
ORAN Radio Unit as just 'lopcomm'.

In the future, if we will need to distinguish different models of one
manufacturer, we could extend ru type to be e.g. manufacturer/model or do
something similar.

Template rendering is still done with ru='m2ru' coming from outside but
internally it is now ru.ru_type='sunwave' instead of ru.ru_type='m2ru'.

Even though I introduced cell object in 79370ebf (software/ors-amarisoft:
enb.jinja2.cfg: Stop using C Preprocessor and switch to Jinja2 completely) it
is currently only cell.bandwidth that is living there, while all other cell
parameters are still fetched from slapparameter_dict directly.

We will soon introduce cell variable - that will iterate over cell_dict, and
also keeping global cell won't work due to name shadowing. On the other hand we
are not yet ready to start migrating all cell parameters to be accessible via
cell object.

-> So inline code for lte bandwidth parameter until the time comes to rework
all cell parameters to be accessible via cell object.

Rendered enb.cfg and gnb.cfg stay the same.

To handle multiple radio units we will need to rework this code significantly.
Move this to a dedicated routine as a preparatory step. The code moves out of
enb.cfg because later it will be also used in UEsim to configure simulator
radio units as well.

No non-whitespace changes in rendered enb.cfg and gnb.cfg .

/cc @jhuge, @lu.xu, @tomo, @xavier_thompson, @Daetalus

To run tapsplit we use plone.recipe.command with both command and
update-command set to `tapsplit ...`. But tapsplit, when run, fully
recreates and reinitializes subtap interfaces, which leads to
interfering with running enb because subtap interfaces, that enb
started to use, are removed. This is not desirable behaviour.

What we need:

1) create subtap interfaces only once and keep them stable
2) until configuration changes which should lead to
   * subtaps recreated, and
   * enb restarted

Carefully reading plone.recipe.command documentation shows:

  command
    Command to run when the buildout part is installed.

  update-command
    Command to run when the buildout part is updated. This happens when
    buildout is run BUT THE CONFIGURATION FOR THIS BUILDOUT PART HAS NOT
    CHANGED.

  (emphasis mine)

So the fix looks to be to make update-command noop - this fulfills
requirement "1". For "2" - I've verified that when configuration
changes, e.g. number of RU changes, buildout reinstalls [vtap] section
from scratch, and it also should restart enb, because generated enb.cfg
changes.

So the fix is fully correct because it satifies all needed requirements.

Amends 49ce8ef5 (software/ors-amarisoft: Provide dedicated TAP interface for each Radio Unit)
/cc @jhuge, @lu.xu, @tomo, @xavier_thompson, @Daetalus

Test only ors-amarisoft and from kirr/slapos@knext + kirr/slapos.toolbox@next .

Don't repeat slapparameter_dict['ncell_list'][k] - we can introduce a name for
current neighbour cell, and use that name in the loop. And align entries to
that they read more clearly.

No non-whitespace changes in rendered enb.cfg and gnb.cfg .

/cc @jhuge, @lu.xu, @tomo, @xavier_thompson, @Daetalus
/proposed-for-review-on nexedi/slapos!1526
/reviewed-by TrustMe

We currently have LTE-specific handover configuration in under cell_list and
NR-specific handover configuration in under nr_cell_list. Those configuration
are different.

However in upcoming MultiRU we will need to handle LTE->NR handover, NR->LTE
handover, and also Intra-ENB handover in addition to Inter-ENB handover we
currently do.

-> Move handover code into common function as a preparatory step for that.

In the future the handover code for LTE and NR cells will be the same, so it
makes sense to move that code to common place to avoid duplication.

For rendered enb.cfg this unification introduces only space and trivial
changes as shown in the appendix.

/cc @jhuge, @lu.xu, @tomo, @xavier_thompson, @Daetalus
/proposed-for-review-on nexedi/slapos!1528
/reviewed-by TrustMe

Appendix. Diff for rendered enb.cfg and gnb.cfg before and after this patch

```
$ git diff -w --no-index config/{old,out}
```

```diff
diff --git a/config/old/enb.cfg b/config/out/enb.cfg
index 43301ee13..9dcca16c7 100644
--- a/config/old/enb.cfg
+++ b/config/out/enb.cfg
@@ -45,16 +45,18 @@
       root_sequence_index: 204,
       dl_earfcn: 36100,
       inactivity_timer: 10000,
+
       // Handover
       ncell_list: [
         // Inter-ENB HO
         {
+          rat: "eutra",
           n_id_cell: 35,
           dl_earfcn: 700,
           cell_id: 0x12345,
           tac: 123,
-        }],
-
+        },
+      ],

       // Carrier Aggregation
       scell_list: [
diff --git a/config/old/gnb.cfg b/config/out/gnb.cfg
index 2127a2f6b..23b07d6e1 100644
--- a/config/old/gnb.cfg
+++ b/config/out/gnb.cfg
@@ -57,6 +57,7 @@
     ssb_pos_bitmap: "10000000",

     inactivity_timer: 10000,
+
       // Handover
       ncell_list: [
         // Inter-ENB HO
@@ -74,8 +75,8 @@
           ssb_period: 20,
           ssb_offset: 0,
           ssb_duration: 1,
-      }],
-
+        },
+      ],

     // tune NR parameters for the cell
     manual_ref_signal_power: true,
```

Useful to have while doing handover-related changes.

/cc @jhuge, @lu.xu, @tomo, @xavier_thompson, @Daetalus
/proposed-for-review-on nexedi/slapos!1528
/reviewed-by TrustMe

Appendix. Diff for rendered enb.cfg and gnb.cfg before and after this patch

```
$ git diff --no-index config/{old,out}
```

```diff
diff --git a/config/old/enb.cfg b/config/out/enb.cfg
index 1843e0f24..43301ee13 100644
--- a/config/old/enb.cfg
+++ b/config/out/enb.cfg
@@ -45,6 +45,16 @@
       root_sequence_index: 204,
       dl_earfcn: 36100,
       inactivity_timer: 10000,
+      // Handover
+      ncell_list: [
+        // Inter-ENB HO
+        {
+          n_id_cell: 35,
+          dl_earfcn: 700,
+          cell_id: 0x12345,
+          tac: 123,
+        }],
+

       // Carrier Aggregation
       scell_list: [
diff --git a/config/old/gnb.cfg b/config/out/gnb.cfg
index d76b45d3c..2127a2f6b 100644
--- a/config/old/gnb.cfg
+++ b/config/out/gnb.cfg
@@ -57,6 +57,25 @@
     ssb_pos_bitmap: "10000000",

     inactivity_timer: 10000,
+    // Handover
+    ncell_list: [
+      // Inter-ENB HO
+      {
+        rat: "nr",
+        dl_nr_arfcn: 520000,
+        ssb_nr_arfcn: ,
+        ul_nr_arfcn: 520000,
+        n_id_cell: 75,
+        gnb_id_bits: 22,
+        nr_cell_id: 0x77712,
+        tac: 321,
+        band: 38,
+        ssb_subcarrier_spacing: 30,
+        ssb_period: 20,
+        ssb_offset: 0,
+        ssb_duration: 1,
+      }],
+
```

1. Currently we have separate log_options for LTE and NR cases with listing
different subsystems in each. But in MultiRU one enb will be driving both LTE
and NR cells at the same time, so we will need to define both LTE- and
NR-related levels.

-> Merge all log settings into one log_options as a preparatory step

For current state it does not hurt for an LTE if we set e.g. ngap.level, and it
does not hurt for NR if we set e.g. s1ap.level - since those layers will be
unused. This way merging log settings for both LTE and NR subsystems is ok.

--------

2. Factorize log_phy_debug handling: instead of duplicating whole
log_options line and changing only phy.level settings there, construct the
log_options line programmatically and handle phy.level on its own.

--------

3. Use log/enb.log log_filename for both LTE and NR cases. In the upcoming
MultiRU there might be several cells activated at the same time and in general
it will be not possible to say are we doing "enb" or "gnb" now - for example if
there will be two cells - one LTE and one NR.

-> Use enb.log for log filename uniformly similarly to how the software is
named (lteenb) even though it can work as both enb and gnb.

For the reference we do the same with enb.xlog in nexedi/slapos!1522 .

/cc @jhuge, @lu.xu, @tomo, @xavier_thompson, @Daetalus
/proposed-for-review-on nexedi/slapos!1527
/reviewed-by TrustMe

Appendix. Diff for rendered enb.cfg and gnb.cfg before and after this patch

```
$ git diff --no-index config/{old,out}
```

```diff
diff --git a/config/old/enb.cfg b/config/out/enb.cfg
index 467bb6364..1843e0f24 100644
--- a/config/old/enb.cfg
+++ b/config/out/enb.cfg
@@ -3,9 +3,7 @@

 {
-
-  log_options: "all.level=error,all.max_size=0,nas.level=debug,nas.max_size=1,s1ap.level=debug,s1ap.max_size=1,x2ap.level=debug,x2ap.max_size=1,rrc.level=debug,rrc.max_size=1,phy.level=info,file.rotate=1G,file.path=/dev/null",
-
+  log_options: "all.level=error,all.max_size=0,nas.level=debug,nas.max_size=1,s1ap.level=debug,s1ap.max_size=1,x2ap.level=debug,x2ap.max_size=1,rrc.level=debug,rrc.max_size=1,ngap.level=debug,ngap.max_size=1,xnap.level=debug,xnap.max_size=1,phy.level=info,file.rotate=1G,file.path=/dev/null",
   log_filename: "log/enb.log",

diff --git a/config/old/gnb.cfg b/config/out/gnb.cfg
index 18523818a..d76b45d3c 100644
--- a/config/old/gnb.cfg
+++ b/config/out/gnb.cfg
@@ -3,10 +3,8 @@

 {
-
-  log_options: "all.level=error,all.max_size=0,nas.level=debug,nas.max_size=1,ngap.level=debug,ngap.max_size=1,xnap.level=debug,xnap.max_size=1,rrc.level=debug,rrc.max_size=1,phy.level=info,file.rotate=1G,file.path=/dev/null",
-
-  log_filename: "log/gnb.log",
+  log_options: "all.level=error,all.max_size=0,nas.level=debug,nas.max_size=1,s1ap.level=debug,s1ap.max_size=1,x2ap.level=debug,x2ap.max_size=1,rrc.level=debug,rrc.max_size=1,ngap.level=debug,ngap.max_size=1,xnap.level=debug,xnap.max_size=1,phy.level=info,file.rotate=1G,file.path=/dev/null",
+  log_filename: "log/enb.log",

   rf_driver: {
```

Current enb config is already quite complex and with MultiRU it will be growing
more - both with added features and with more sections emitted because there
will be multiple radio units, multiple cells and cross cell interactions. So
for clarity we will want to annotate with a comment to which cell or ru object
a section belongs, or to which cell-cell pair a particular interaction belongs.

Amarisoft supports C-style comments and preprocessor directives out of the box,
but if we use them in the configuration files, yaml.load, that we use in the
test to load generated configs, will break, because // and /* ... */ is not
valid YAML. It looks like Amarisoft does preprocessing as a separate step
before further loading given configuration via yaml.

So to be able to use the comments and still have tests working we need to do
the same - in the tests preprocess the files before feeding them to yaml loader.

-> Do that with the help of https://pypi.org/project/pcpp/

In my view that library has good quality and in my experience it worked
flawlessly. Anyway we need it to only handle comments, not sophisticated CPP
features, and for that it works just ok.

Add some comments to existing enb.cfg and ue.cfg to make sure it really works.
Those are simple comments, and in current state it they might seem as not 100%
necessary, but with more upcoming config changes it would be good to have those
descriptionary anchors present in the generated configs, so I suggest we add them.
Anyway they should not do any harm at all.

/cc @jhuge, @lu.xu, @tomo, @xavier_thompson, @Daetalus
/proposed-for-review-on nexedi/slapos!1526
/reviewed-by TrustMe

Currently on every test yaml.load issues a warning that using it without
explicitly specifying loader is deprecated, for example:

    test_enb_conf (testTDD.TestENBParameters) .../slapos/software/ors-amarisoft/test/test.py:29: YAMLLoadWarning: calling yaml.load() without Loader=... is deprecated, as the default Loader is unsafe. Please read https://msg.pyyaml.org/load for full details.

-> Fix the warning by using appropriate loader explicitly.

Use FullLoader since msg.pyyaml.org/load describes it as

   Loads the full YAML language. Avoids arbitrary code execution.
   This is currently (PyYAML 5.1+) the default loader called by yaml.load(input) (after issuing the warning).

i.e. we get support for full YAML feature set, do not get code execution and
make sure that the behaviour stays exactly the same as before, but without the
warning.

/cc @jhuge, @lu.xu, @tomo, @xavier_thompson, @Daetalus
/proposed-for-review-on nexedi/slapos!1526
/reviewed-by TrustMe

We are going to do fixes and enhancements to YAML loading processes. Move
corresponding code to one place before that as the preparatory step.

Place new utility in new test/test.py file - with MultiRU that will be the
place for tests of generic mode and test.jinja2.py, which will be renamed to
test_ors.py, will be using utilities from there. So place the utility into new
place from the start.

/cc @jhuge, @lu.xu, @tomo, @xavier_thompson, @Daetalus
/proposed-for-review-on nexedi/slapos!1526
/reviewed-by TrustMe

In MultiRU one enb will be driving multiple, possible of different kind,
TDD/FDD and LTE/NR cells all at the same time, because that standard
functionality of a base station and because original Amarisoft software
supports that out of the box.

However we currently have enb and gnb services separate and duplicating most of
each other code.

-> Merge instance-enb.jinja2.cfg and instance-gnb.jinja2.cfg as a preparatory step for MultiRU.

- instance-enb.jinja2.cfg pulls gnb specific bits from instance-gnb.jinja2.cfg
- instance-gnb.jinja2.cfg goes away effectively switching gnb to use
  ru/libinstance.jinja2.cfg like enb already does
- For parameters that were duplicated as enb_<X> and gnb_<X>  generic software
  now accepts only enb_<X> with ORS mode wrapper providing backward
  compatibility for gnb_* parameters. For example if gnb_config_link is given
  for a gnb instance, it will be translated to enb_config_link to underlying
  generic enb so that gnb_config_link works correctly.

  For ORS we care to provide 100% backward compatibility because there are many ORS'es deployed.
  For generic software we are free to clean things up as needed, because there
  is not much generic deployments at this time.

/cc @jhuge, @lu.xu, @tomo, @xavier_thompson, @Daetalus
/proposed-for-review-on nexedi/slapos!1522
/reviewed-by TrustMe

--------

Appendix. Diff between instance-enb.jinja2.cfg and instance-gnb.jinja2.cfg before this patch

```
$ git diff --no-index instance-enb.jinja2.cfg instance-gnb.jinja2.cfg
```

```diff
diff --git a/instance-enb.jinja2.cfg b/instance-gnb.jinja2.cfg
index 6d4ce7e94..6ee62b3ff 100644
--- a/instance-enb.jinja2.cfg
+++ b/instance-gnb.jinja2.cfg
@@ -1,19 +1,25 @@
 {#- defaults for eNB radio parameters.
     NOTE they are installed temporary and will go away after switch to generic multiRU. #}
 {%- do RF.setdefault('tx_gain',     slapparameter_dict.get('tx_gain',     0)) %}
 {%- do RF.setdefault('rx_gain',     slapparameter_dict.get('rx_gain',     0)) %}
-{%- do RF.setdefault('dl_earfcn',   slapparameter_dict.get('dl_earfcn',   0)) %}
+{%- do RF.setdefault('dl_nr_arfcn', slapparameter_dict.get('dl_nr_arfcn', 0)) %}
+{%- do RF.setdefault('nr_band',     slapparameter_dict.get('nr_band',     0)) %}

 [buildout]
 parts =
   directory
-  enb-config
+  gnb-config
   enb-service
   xamari-xlog-service
 {% if slapparameter_dict.get('xlog_fluentbit_forward_host') %}
   xlog-fluentbit-service
 {% endif %}
+  amarisoft-stats-service
+  amarisoft-rf-info-service
+  check-sdr-busy.py
   check-baseband-latency.py
+  check-amarisoft-stats-log.py
+  check-rx-saturated.py
   monitor-base
   publish-connection-information

@@ -23,11 +29,6 @@ eggs-directory = {{ eggs_directory }}
 develop-eggs-directory = {{ develop_eggs_directory }}
 offline = true

-{%- import 'slaplte.jinja2'            as slaplte with context  %}
-{%- import 'ru_libinstance.jinja2.cfg' as rulib   with context  %}
-{{ rulib.buildout() }}
-
-
 [monitor-httpd-conf-parameter]
 httpd-include-file = {{ buildout_directory }}/etc/httpd-include-file.conf
 port = ${monitor-instance-parameter:monitor-httpd-port}
@@ -52,10 +53,11 @@ cert = {{ slap_connection['cert-file'] }}

 configuration.com_ws_port = 9001
 configuration.com_addr = 127.0.1.2
-configuration.mme_addr = 127.0.1.100
+configuration.amf_addr = 127.0.1.100
 configuration.gtp_addr = 127.0.1.1
-configuration.default_lte_bandwidth = {{ default_lte_bandwidth }}
-configuration.default_lte_inactivity_timer = {{ default_lte_inactivity_timer }}
+configuration.default_nr_bandwidth = {{ default_nr_bandwidth }}
+configuration.default_nr_inactivity_timer = {{ default_nr_inactivity_timer }}
+configuration.default_nr_ssb_pos_bitmap = {{ default_nr_ssb_pos_bitmap }}
 configuration.default_n_antenna_dl = {{ default_n_antenna_dl }}
 configuration.default_n_antenna_ul = {{ default_n_antenna_ul }}

@@ -63,6 +65,7 @@ configuration.default_n_antenna_ul = {{ default_n_antenna_ul }}
 recipe = slapos.cookbook:mkdirectory
 software = {{ buildout_directory }}
 home = ${buildout:directory}
+etc = ${:home}/etc
 var = ${:home}/var
 etc = ${:home}/etc
 bin = ${:home}/bin
@@ -73,30 +76,32 @@ service = ${:etc}/service
 promise = ${:etc}/promise
 log = ${:var}/log

-{% if slapparameter_dict.get("enb_config_link", None) %}
-[enb-config-dl]
+{% if slapparameter_dict.get("gnb_config_link", None) %}
+[gnb-config-dl]
 recipe = slapos.recipe.build:download
-url = {{ slapparameter_dict.get("enb_config_link") }}
-version = {{ slapparameter_dict.get("enb_config_version") }}
+url = {{ slapparameter_dict.get("gnb_config_link") }}
+version = {{ slapparameter_dict.get("gnb_config_version") }}
 offline = false
 {% endif %}

 [enb-sh-wrapper]
 recipe = slapos.recipe.template
 output = ${directory:bin}/${:_buildout_section_name_}
-enb-log = ${directory:log}/enb-output.log
+gnb-log = ${directory:log}/gnb-output.log
 inline =
   #!/bin/sh
 {% if not slapparameter_dict.get("testing", False) %}
   sudo -n /opt/amarisoft/rm-tmp-lte;
   sudo -n /opt/amarisoft/init-sdr;
   sudo -n /opt/amarisoft/init-enb;
-  (echo && echo && date "+[%Y/%m/%d %T.%N %Z] Starting eNB software..." && echo) >> ${:enb-log};
-  tail -c 1M ${:enb-log} > ${:enb-log}.tmp;
-  mv ${:enb-log}.tmp ${:enb-log};
-  {{ enb }}/lteenb ${directory:etc}/enb.cfg >> ${:enb-log} 2>> ${:enb-log};
+  (echo && echo && date "+[%Y/%m/%d %T.%N %Z] Starting gNB software..." && echo) >> ${:gnb-log};
+  tail -c 1M ${:gnb-log} > ${:gnb-log}.tmp;
+  mv ${:gnb-log}.tmp ${:gnb-log};
+  {{ enb }}/lteenb ${directory:etc}/gnb.cfg >> ${:gnb-log} 2>> ${:gnb-log};
+
 {% endif %}

+### eNodeB (enb)
 [enb-service]
 recipe = slapos.cookbook:wrapper
 command-line = ${enb-sh-wrapper:output}
@@ -105,7 +110,7 @@ mode = 0775
 reserve-cpu = True
 pidfile = ${directory:run}/enb.pid
 hash-files =
-  ${enb-config:output}
+  ${gnb-config:output}
   ${enb-sh-wrapper:output}
 environment =
   LD_LIBRARY_PATH={{ openssl_location }}/lib
@@ -114,22 +119,23 @@ environment =
 [xamari-xlog-script]
 recipe = slapos.recipe.template
 output = ${directory:bin}/${:_buildout_section_name_}
-period = {{ slapparameter_dict.get("enb_stats_fetch_period", 60) }}
+period = {{ slapparameter_dict.get("gnb_stats_fetch_period", 60) }}
 stats_logspec = stats[samples,rf]/${:period}s
-{%- if slapparameter_dict.get("enb_drb_stats_enabled", True) %}
+{%- if slapparameter_dict.get("gnb_drb_stats_enabled", True) %}
 drb_stats_logspec = x.drb_stats/${:period}s
 {%- else %}
 drb_stats_logspec =
 {%- endif %}
 rotatespec = 100MB.9
 logspec = ${:stats_logspec} ${:drb_stats_logspec}
-{%- if slapparameter_dict.get("websocket_password", "") %}
+logspec = ${:stats_logspec} ${:drb_stats_logspec}
+{% if slapparameter_dict.get("websocket_password", "") %}
 websock = ws://[${slap-configuration:ipv6-random}]:9001
-{%- else %}
+{% else %}
 websock = ws://127.0.1.2:9001
-{%- endif %}
+{% endif %}
 xamari = {{ buildout_directory }}/bin/xamari
-logfile = ${monitor-directory:public}/enb.xlog
+logfile = ${monitor-directory:public}/gnb.xlog
 inline =
   #!/bin/sh
   exec ${:xamari} xlog --rotate ${:rotatespec} ${:websock} ${:logfile} ${:logspec}
@@ -177,6 +183,52 @@ wrapper-path = ${directory:service}/${:_buildout_section_name_}
 hash-files = ${:fluentbit-config}
 {% endif %}

+[amarisoft-stats-template]
+recipe = slapos.recipe.template:jinja2
+extensions = jinja2.ext.do
+log-output = ${directory:var}/log/amarisoft-stats.json.log
+context =
+  section directory directory
+  key slapparameter_dict slap-configuration:configuration
+  key log_file :log-output
+  raw stats_period {{ slapparameter_dict.get("gnb_stats_fetch_period", 60) }}
+  raw testing {{ slapparameter_dict.get("testing", False) }}
+  raw python_path {{ buildout_directory}}/bin/pythonwitheggs
+mode = 0775
+url = {{ ru_amarisoft_stats_template }}
+output = ${directory:bin}/amarisoft-stats.py
+
+[amarisoft-rf-info-template]
+recipe = slapos.recipe.template:jinja2
+extensions = jinja2.ext.do
+log-output = ${directory:var}/log/amarisoft-rf-info.json.log
+context =
+  section directory directory
+  key slapparameter_dict slap-configuration:configuration
+  key log_file :log-output
+  raw stats_period {{ slapparameter_dict.get("gnb_stats_fetch_period", 60) }}
+  raw testing {{ slapparameter_dict.get("testing", False) }}
+  raw python_path {{ buildout_directory}}/bin/pythonwitheggs
+mode = 0775
+url = {{ ru_amarisoft_rf_info_template }}
+output = ${directory:bin}/amarisoft-rf-info.py
+
+[amarisoft-stats-service]
+recipe = slapos.cookbook:wrapper
+command-line = ${amarisoft-stats-template:output}
+wrapper-path = ${directory:service}/amarisoft-stats
+mode = 0775
+hash-files =
+  ${amarisoft-stats-template:output}
+
+[amarisoft-rf-info-service]
+recipe = slapos.cookbook:wrapper
+command-line = ${amarisoft-rf-info-template:output}
+wrapper-path = ${directory:service}/amarisoft-rf-info
+mode = 0775
+hash-files =
+  ${amarisoft-rf-info-template:output}
+
 [config-base]
 recipe = slapos.recipe.template:jinja2
 extensions = jinja2.ext.do
@@ -190,53 +242,47 @@ context =
   raw gtp_addr_v4 {{ lan_ipv4 }}
   raw tx_gain {{ RF.tx_gain }}
   raw rx_gain {{ RF.rx_gain }}
-  raw earfcn  {{ RF.dl_earfcn }}
+  raw nr_arfcn {{ RF.dl_nr_arfcn }}
+  raw nr_band {{ RF.nr_band }}
   raw software_name {{ software_name }}
   raw rf_mode {{ rf_mode }}
   raw trx {{ trx }}
   raw bbu {{ bbu }}
   raw ru_type {{ ru }}
-  json do_lte true
-  json do_nr  false
+  json do_lte false
+  json do_nr  true
   import  netaddr netaddr
   ${:extra-context}

-[sib-config]
-<= config-base
-url = {{ sib23_template }}
-output = ${directory:etc}/sib23.cfg
-
 [drb-config]
 <= config-base
-url = {{ drb_lte_template }}
+url = {{ drb_nr_template }}
 output = ${directory:etc}/drb.cfg

-[enb-config]
+[gnb-config]
 <= config-base
-{% if slapparameter_dict.get("enb_config_link", None) %}
-url = ${enb-config-dl:target}
+{% if slapparameter_dict.get("gnb_config_link", None) %}
+url = ${gnb-config-dl:target}
 {% else %}
 url = {{ enb_template }}
 {% endif %}
-output = ${directory:etc}/enb.cfg
+output = ${directory:etc}/gnb.cfg
 extra-context =
     import json_module json
-    json cell_list {{ rulib.cell_list | tojson }}
-    key sib23_file sib-config:output
     key drb_file   drb-config:output
 import-list =
     rawfile slaplte.jinja2 {{ slaplte_template }}

-
 [publish-connection-information]
 <= monitor-publish
 recipe = slapos.cookbook:publish.serialised
 {%- if slapparameter_dict.get("websocket_password", "") %}
 websocket_url = ws://[${slap-configuration:ipv6-random}]:9001
 {%- endif %}
-enb-ipv6 = ${slap-configuration:ipv6-random}
-enb-ipv4 = {{ lan_ipv4 }}
-current-earfcn  = {{ RF.dl_earfcn }}
+gnb-ipv6 = ${slap-configuration:ipv6-random}
+gnb-ipv4 = {{ lan_ipv4 }}
+current-nr-arfcn = {{ RF.dl_nr_arfcn }}
+current-nr-band = {{ RF.nr_band }}
 amarisoft-version = {{ lte_version }}
 license-expiration = {{ lte_expiration }}
 monitor-gadget-url = ${:monitor-base-url}/gadget/software.cfg.html
@@ -253,10 +299,35 @@ password = {{ slapparameter_dict['monitor-password'] | string }}
 <= monitor-promise-base
 name = ${:_buildout_section_name_}

+[check-sdr-busy.py]
+<= macro.promise
+promise = check_sdr_busy
+config-testing = {{ slapparameter_dict.get("testing", False) }}
+config-sdr = {{ sdr }}
+config-sdr_dev  = 0
+config-dma_chan = 0
+
 [check-baseband-latency.py]
 <= macro.promise
 promise = check_baseband_latency
 config-testing = {{ slapparameter_dict.get("testing", False) }}
-config-amarisoft-stats-log = ${ru_amarisoft-stats-template:log-output}
-config-stats-period = {{ slapparameter_dict.get("enb_stats_fetch_period", 60) }}
+config-amarisoft-stats-log = ${amarisoft-stats-template:log-output}
+config-stats-period = {{ slapparameter_dict.get("gnb_stats_fetch_period", 60) }}
 config-min-rxtx-delay = {{ slapparameter_dict.get("min_rxtx_delay", 0) }}
+
+[check-amarisoft-stats-log.py]
+<= macro.promise
+promise = check_amarisoft_stats_log
+output = ${directory:plugins}/check-amarisoft-stats-log.py
+config-testing = {{ slapparameter_dict.get("testing", False) }}
+config-amarisoft-stats-log = ${amarisoft-stats-template:log-output}
+config-stats-period = {{ slapparameter_dict.get("gnb_stats_fetch_period", 60) }}
+
+[check-rx-saturated.py]
+<= macro.promise
+promise = check_rx_saturated
+config-testing = {{ slapparameter_dict.get("testing", False) }}
+config-rf-rx-chan-list = {{ list(range(0, int(slapparameter_dict.get('n_antenna_ul', default_n_antenna_ul)))) }}
+config-amarisoft-stats-log = ${amarisoft-stats-template:log-output}
+config-stats-period = {{ slapparameter_dict.get("gnb_stats_fetch_period", 60) }}
+config-max-rx-sample-db = {{ slapparameter_dict.get("max_rx_sample_db", 0) }}
```

In MultiRU we are going to have generic software with flexible configuration
and many features + ORS software, which wraps the generic part, adds ORS
specific features, and translates simple ORS schema to generic ones.

Let's first move ORS-specific bits to dedicated place as a preparatory step for that:

- add software-ors.cfg . In the future software-ors.cfg will be the entry point
  for ORS mode, but for now it is only a place from where software-ors-* extend from.

- add instance-ors.cfg . We move ORS-specific code from instance.cfg here and
  set it to use instance-ors-enb.jinja2.cfg when instantiating enb/gnb.

- add instance-ors-enb.jinja2.cfg . This pulls ORS-specific code from
  instance-enb.jinja2.cfg + instance-gnb.jinja2.cfg and wraps them with ORS
  context built by instance-ors.cfg

- in the templates the way to see whether it is ORS or not, and if yes, to access
  ORS parameters is changed: now it is always via checking `ors` object, which
  can be either False for non-ORS mode, or dict for ORS mode, and if it is dict
  the keys inside that dict are ORS specific properties, e.g. ors['one-watt'].

  This adjustment is handy to organize ORS mode extension from generic with
  generic setting `json ors false` in the context, and ORS mode undoing that and
  setting ORS context properly. I think the code also reads more clear this way, i.e. with

 	{%- if one_watt == "True" %}

  changed to

	{%- if ors['one-watt'] %}

  because in the second variant it is clear that one-watt is a property of ORS.

The rendered configs for enb.cfg and gnb.cfg stay unchanged.

/cc @jhuge, @lu.xu, @tomo, @xavier_thompson, @Daetalus
/proposed-for-review-on nexedi/slapos!1522
/reviewed-by TrustMe

We use computer identifier in fluentd forwarding. This identifier was named as
ors-id, but it applies not only to ORS, but also to generic deployment with
BBU.

In the next patch we are going to introduce ORS mode and move ORS-specific
bits to software-ors.cfg and instance-ors.cfg + co. The computer identifier
will stay in generic part, because it is generic.

-> To avoid ambiguity rename it to be clearly unrelated to ORS specifics.

/cc @jhuge, @lu.xu, @tomo, @xavier_thompson, @Daetalus
/proposed-for-review-on nexedi/slapos!1522
/reviewed-by TrustMe

When there are multiple cells and CA configured, without those parameters enb fails to start with e.g.

    n1_pucch_an_cs_count must be > 0 for the CA Primary cell

Set them on all cell like illustrated in enb-2cc.cfg and enb-3cc.cfg Amarisoft examples.

Not sure selected values are best - I took them from above mentioned examples as is.

Reference to documentation about those parameters:

https://tech-academy.amarisoft.com/lteenb.doc#prop.pucch_dedicated.n1_pucch_an_cs_count
https://tech-academy.amarisoft.com/lteenb.doc#prop.pucch_dedicated.n3_pucch_an_n_rb
https://tech-academy.amarisoft.com/lteenb.doc#prop.pucch_dedicated.ack_nack_feedback_mode_ca

/cc @lu.xu, @tomo, @xavier_thompson, @Daetalus
/helped-by @jhuge
/reviewed-on nexedi/slapos!1519

See merge request nexedi/slapos!1524

See merge request nexedi/slapos!1525

Fix double trailing "/".
Add sane defaults.

software/ors-amarisoft: Merge instance-ue-lte.jinja2.cfg + instance-ue-nr.jinja2.cfg  -> into instance-ue.jinja2.cfg

This is preparatory step for MultiRU and removes code duplication.

Mostly straightforward, but there is one backward incompatible change: instead
of ue_lte_config_link and ue_nr_config_link there is now only one
ue_config_link parameter.

We talked with Lu some time ago and my understanding is that UEsim is not widely
used. This way I think it is better to clarify things instead of putting
backward compatibility effort for nothing.

/cc @lu.xu, @tomo, @xavier_thompson, @Daetalus
/reviewed-by @jhuge
/reviewed-on nexedi/slapos!1523

--------

Appendix. Diff between instance-ue-lte.jinja2.cfg and instance-ue-nr.jinja2.cfg before this patch

```
$ git diff --no-index instance-ue-lte.jinja2.cfg instance-ue-nr.jinja2.cfg
```

```diff
diff --git a/instance-ue-lte.jinja2.cfg b/instance-ue-nr.jinja2.cfg
index 4d4a2e329..8fd238bfb 100644
--- a/instance-ue-lte.jinja2.cfg
+++ b/instance-ue-nr.jinja2.cfg
@@ -1,7 +1,7 @@
 [buildout]
 parts =
   directory
-  lte-ue-lte-config
+  lte-ue-nr-config
   lte-ue-service
   check-sdr-busy.py
   monitor-base
@@ -35,11 +35,11 @@ url = {{ slap_connection['server-url'] }}
 key = {{ slap_connection['key-file'] }}
 cert = {{ slap_connection['cert-file'] }}

-configuration.default_lte_bandwidth = {{ default_lte_bandwidth }}
+configuration.default_nr_bandwidth = {{ default_nr_bandwidth }}
 configuration.default_n_antenna_dl = {{ default_n_antenna_dl }}
 configuration.default_n_antenna_ul = {{ default_n_antenna_ul }}
-configuration.default_lte_imsi = {{ default_lte_imsi }}
-configuration.default_lte_k = {{default_lte_k}}
+configuration.default_nr_imsi = {{ default_nr_imsi }}
+configuration.default_nr_k = {{ default_nr_k }}

 [directory]
 recipe = slapos.cookbook:mkdirectory
@@ -56,11 +56,11 @@ service = ${:etc}/service
 promise = ${:etc}/promise
 log = ${:var}/log

-{% if slapparameter_dict.get("ue_lte_config_link", None) %}
-[ue-lte-config-dl]
+{% if slapparameter_dict.get("ue_nr_config_link", None) %}
+[ue-nr-config-dl]
 recipe = slapos.recipe.build:download
-url = {{ slapparameter_dict.get("ue_lte_config_link") }}
-version = {{ slapparameter_dict.get("ue_lte_config_version") }}
+url = {{ slapparameter_dict.get("ue_nr_config_link") }}
+version = {{ slapparameter_dict.get("ue_nr_config_version") }}
 offline = false
 {% endif %}

@@ -87,7 +87,7 @@ mode = 0775
 reserve-cpu = True
 pidfile = ${directory:run}/ue.pid
 hash-files =
-  ${lte-ue-lte-config:output}
+  ${lte-ue-nr-config:output}
   ${lte-ue-sh-wrapper:output}
 environment =
   LD_LIBRARY_PATH={{ openssl_location }}/lib
@@ -101,18 +101,19 @@ context =
   section slap_configuration slap-configuration
   section pub_info publish-connection-information
   key slapparameter_dict slap-configuration:configuration
-  json do_lte true
-  json do_nr  false
+  json do_lte false
+  json do_nr  true

-[lte-ue-lte-config]
+[lte-ue-nr-config]
 <= config-base
-{% if slapparameter_dict.get("ue_lte_config_link", None) %}
-url = ${ue-lte-config-dl:target}
+{% if slapparameter_dict.get("ue_nr_config_link", None) %}
+url = ${ue-nr-config-dl:target}
 {% else %}
 url = {{ ue_template }}
 {% endif %}
 output = ${directory:etc}/ue.cfg

+
 [publish-connection-information]
 <= monitor-publish
 recipe = slapos.cookbook:publish.serialised
```

As Amarisoft documentation says in UEsim LTE bandwidth is defined in MHz, nor in RB:

    https://tech-academy.amarisoft.com/lteue.doc#prop.bandwidth

I checked the history and it was like this since 2015-10-28 release.

-> Fix emitted bandwidth for LTE cell.

Diff for rendered ue-lte.cfg:

```
$ git diff --no-index config/{old,out}
```

```diff
--- a/config/old/ue-lte.cfg
+++ b/config/out/ue-lte.cfg
@@ -1,5 +1,4 @@

-#define N_RB_DL             50

 {
   log_options: "all.level=error,all.max_size=0,nas.level=debug,nas.max_size=1,rrc.level=debug,rrc.max_size=1,phy.level=info,file.rotate=1G,file.path=/dev/null",
@@ -20,7 +19,7 @@ rf_driver: {
     multi_ue: true,
     cells: [
       {
-        bandwidth: N_RB_DL,
+        bandwidth: 10,
         dl_earfcn: 0,
         n_antenna_dl: 2,
         n_antenna_ul: 2,
```

By coincidence this removes last usage of C Preprocessor from ue.jinja2.cfg
and, similarly to enb.jinja2.cfg, makes it to be Jinja2-only.

/cc @lu.xu, @tomo, @xavier_thompson, @Daetalus
/reviewed-by @jhuge
/reviewed-on !1521

To support multiple Radio Units and multiple cells, we will need to loop over them
and emit corresponding configuration parts taking RU/Cell parameters into
account for each part. We currently handle some such parameters at Jinja2 level
(e.g. dl_earfcn), while some other parameters at CPP level (e.g. cell
bandwidth) and rely on enb to preprocess generated enb.cfg with CPP on its own.

While CPP works ok for simple 1RU-1CELL cases, and CPP is also the tool that Amarisoft
itself uses in its examples, it has the limitation that it cannot cooperate
with loops. In other words there can be only one global N_RB_DL #define, and it
cannot be different for different cells while we are looping over them at
Jinja2 level. That means that we cannot use CPP to handle multiple cells.

For this reason switch enb.jinja2.cfg to be using Jinja2 only without CPP.

While rendered enb.cfg/gnb.cfg change, we can see that they change in expected
way, with leaving only blocks that should be active for input parameters. See
the Appendix for details.

The switch is straightforward but one thing deserves to be mentioned: due to
limitation of Jinja2, where macros can return only strings, we use JSON
encoding to be able to return arbitrary types - integers, floats, dicts, etc,
and use a convention to name such macros with j prefix and wrap their usage
with J so that whole invocation does not add much noise. See added slaplte.J
documentation for details.

/cc @lu.xu, @tomo, @xavier_thompson, @Daetalus
/reviewed-by @jhuge
/reviewed-on !1520

--------

Appendix. Diff for rendered enb.cfg/gnb.cfg before and after this patch

```
$ git diff --no-index config/{old,out}
```

```diff
diff --git a/config/old/enb.cfg b/config/out/enb.cfg
index 23e56c9a9..ee2661640 100644
--- a/config/old/enb.cfg
+++ b/config/out/enb.cfg
@@ -1,14 +1,6 @@

-#define TDD                 1
-
-#define N_RB_DL             50
-
-#define N_ANTENNA_DL        2
-
-#define N_ANTENNA_UL        2
-

 {

@@ -44,8 +36,8 @@
   cell_list: [
     {
       rf_port: 0,
-      n_antenna_dl: N_ANTENNA_DL,
-      n_antenna_ul: N_ANTENNA_UL,
+      n_antenna_dl: 2,
+      n_antenna_ul: 2,

       cell_id: 0x00,
       tac: 0x0001,
@@ -59,83 +51,33 @@

     manual_ref_signal_power: true,

-
-#if TDD == 1
     uldl_config: 6,
     sp_config: 7,
-#endif
-
-    n_rb_dl: N_RB_DL,
-#if N_RB_DL == 6
-    si_coderate: 0.30,
-#else
-    si_coderate: 0.20,
-#endif
+    n_rb_dl: 50,
+    si_coderate: 0.2,

     pdsch_dedicated: {
-#if N_ANTENNA_DL == 4
-      p_a: -6,
-#elif N_ANTENNA_DL == 2
       p_a: -3,
-#else
-      p_a: 0,
-#endif
       p_b: -1,
     },

-#if N_RB_DL == 6
-    pdcch_format: 1,
-#else
-    pdcch_format: 2,
-#endif
-
-#if N_RB_DL == 6
-    prach_config_index: 15,
-#else
+    pdcch_format:       2,
     prach_config_index: 4,
-#endif
-
-#if N_RB_DL == 6
-    initial_cqi: 5,
-#else
-    initial_cqi: 3,
-#endif
+    initial_cqi:        3,

     pucch_dedicated: {
       n1_pucch_sr_count: 11,
       cqi_pucch_n_rb: 1,
       n1_pucch_an_cs_count: 8,
       n3_pucch_an_n_rb: 3,
-#if TDD == 1
       tdd_ack_nack_feedback_mode: "multiplexing", /* TDD only */
-#endif
     },
-
-#if N_ANTENNA_DL >= 2
     m_ri: 8,
     transmission_mode: 3,
-#endif

     srs_dedicated: {
-#if N_RB_DL == 6
-      srs_bandwidth_config: 7,
-      srs_bandwidth: 1,
-#elif N_RB_DL == 15
-      srs_bandwidth_config: 6,
-      srs_bandwidth: 1,
-#elif N_RB_DL == 25
-      srs_bandwidth_config: 3,
-      srs_bandwidth: 1,
-#elif N_RB_DL == 50
       srs_bandwidth_config: 2,
       srs_bandwidth: 2,
-#elif N_RB_DL == 75
-      srs_bandwidth_config: 2,
-      srs_bandwidth: 2,
-#else
-      srs_bandwidth_config: 2,
-      srs_bandwidth: 3,
-#endif
       srs_subframe_config: 3,
       srs_period: 40,
       srs_hopping_bandwidth: 0,
diff --git a/config/old/gnb.cfg b/config/out/gnb.cfg
index 5bfd3bb01..0b6a1445c 100644
--- a/config/old/gnb.cfg
+++ b/config/out/gnb.cfg
@@ -1,13 +1,6 @@

-#define TDD                 1
-
-
-#define N_ANTENNA_DL        2
-
-#define N_ANTENNA_UL        2
-

 {

@@ -50,8 +43,8 @@
   nr_cell_list: [
   {
     rf_port: 0,
-    n_antenna_dl: N_ANTENNA_DL,
-    n_antenna_ul: N_ANTENNA_UL,
+    n_antenna_dl: 2,
+    n_antenna_ul: 2,

     cell_id: 0x01,
     n_id_cell: 500,
@@ -108,29 +101,10 @@
     csi_rs: {
       nzp_csi_rs_resource: [
         {
-#if N_ANTENNA_DL == 1
-          n_ports: 1,
-          frequency_domain_allocation: "row2",
-          bitmap: "100000000000",
-          cdm_type: "no_cdm",
-#elif N_ANTENNA_DL == 2
           n_ports: 2,
           frequency_domain_allocation: "other",
           bitmap: "100000",
           cdm_type: "fd_cdm2",
-#elif N_ANTENNA_DL == 4
-          n_ports: 4,
-          frequency_domain_allocation: "row4",
-          bitmap: "100",
-          cdm_type: "fd_cdm2",
-#elif N_ANTENNA_DL == 8
-          n_ports: 8,
-          frequency_domain_allocation: "other",
-          bitmap: "110011",
-          cdm_type: "fd_cdm2",
-#else
-#error unsupported number of DL antennas
-#endif
         },

       ],
@@ -148,22 +122,10 @@

       csi_report_config: [
         {
-#if N_ANTENNA_DL > 1
           codebook_config: {
             codebook_type: "type1",
             sub_type: "typeI_SinglePanel",
-#if N_ANTENNA_DL == 2
-#elif N_ANTENNA_DL == 4
-            n1: 2,
-            n2: 1,
-            codebook_mode: 1,
-#elif N_ANTENNA_DL == 8
-            n1: 4,
-            n2: 1,
-            codebook_mode: 1,
-#endif
           },
-#endif
         },
       ],
     },
```

In the next patch we will switch usage of C Preprocessor to Jinja2, and in jinja2 doing set from under if, as e.g. in

    {%- if ru == 'm2ru' %}
    {%-   set n_antenna_ul = 1  %}
    {%- endif %}

does _not_ have the effect of setting n_antenna_ul=1 outside of the if block.

That, however, can be worked around with usage of namespace objects, so the following works as intended:

    {%- set x = namespace() %}
    {%- if ru == 'm2ru' %}
    {%-   set x.n_antenna_ul = 1  %}
    {%- endif %}

with x.n_antenna_ul=1 if ru was m2ru.

So taking into account this, and that in MultiRU ru will be denoting
RadioUnit-related configuration, let's switch ru to be a namespace object with
ru.ru_type denoting type of attached radio unit.

This both goes as a preparatory step for MultiRU and also allows to switch from
CPP to Jinja2 in the next patch.

/cc @lu.xu, @tomo, @xavier_thompson, @Daetalus
/reviewed-by @jhuge
/reviewed-on !1520

When running resilience tests we have too deep paths:

    time="2024-01-24T01:32:14+01:00" level=fatal msg="load config" config_path=/srv/slapgrid/slappart22/t/eeq/i/0/tmp/inst/T2/srv/runner/instance/slappart0/etc/gitaly-config.toml error="socket could not be created in /srv/slapgrid/slappart22/t/eeq/i/0/tmp/inst/T2/srv/runner/instance/slappart0/var/gitaly/sockets/internal: listen unix /srv/slapgrid/slappart22/t/eeq/i/0/tmp/inst/T2/srv/runner/instance/slappart0/var/gitaly/sockets/internal/test-0c5c65ff.sock: bind: invalid argument"

and stop using old version in gitlab