However, when we free after we encode, fsanitize isnt happy.
Need to clean that up. Also, found an actual bug in LTE.
For the random value issue from fall 2020, we added a fix.
This fix uses ctxt and we were getting ctxt properly.
Lastly, we allocated some memory in processing of the
NR Meas report in the eNB.
At this point we are successfully able to build.
Additionally, we can run the scenario,
however, it does not pass. It seems that the gNB
is not connecting to the proxy correctly. Just
wanted to push the progress so far. FYI, the items
that had to be changed to correct the linking issues
were the following:
- mac_rrc_data_ind_ue vs. nr_mac_rrc_data_ind_ue
- rrc_data_req vs. nr_rrc_data_req
- mac_rrc_data_req_ue vs. nr_mac_rrc_data_req_ue
- rrc_data_req_ue vs. rrc_data_req_nr_ue
- rrc_data_req vs. nr_rrc_data_req
The listed functions should be declard in the LTE/NR
UE directory depending on the functionality. Several
were mixed. i.e.: LTE functions being called in NR UE.
Also, removing siWindowLength, siWindowLength_int,
SIBType, SIBPeriod, and siPeriod_int from the NR UE RRC.
These variable were not used in the NR UE and are defined
for LTE only.
Lastly, in the NR_IF_Module.c of the NR UE, the global
variable def_dci_pdu_rel15 is not accessible. Need to
revisit this. For not it is commented out.
Once the LTE UE's tunnel interface with the EPC
is ready to be established, if we are in NSA mode,
we do not want to launch the tunnel interface
from the LTE UE side, but in the NR UE. Via itti_msgs
we send the string containing the tunnel interface
'up' command to the NR UE and bring it up from the NR UE.
At the moment, the NSA mode worked once, but shows
unpredictable behavior. Other times it does not work.
In this commit I added several LOG_A messages for NSA
mode. Also removed old comments that were added during
development. Lastly, more comments for all the hacks
have been added.
Also removed several warnings by properly
declaring nr-nFAPI functions and removed
declaration of unused functions. Also, reverted
eNB configuration file changes.
This caused the SCTP descriptor to be reset. This
made issues in the X2 interface between gNB and eNB.
Lots of logs added here. Need to fill NR_UE_Capability_Info
properly.
Also removed the [eNB_index + 1] saving/writing
in the process_MeasObj function. This indexing
was incorrect. Also cleaned up the code, fixed
ssRSRB -> ssbRSRP. Lastly, added assertFatals
around indexing in process_measObj function.
This commit also removed MAX_NUM_NEIGH_CELLs and
replaced it with MAX_GNB_CELLS. This was a minor change
OAI added. The standalone sockets for the NR UE correctly
connect to the proxy. We are currently receiving dl_tti
messages from the proxy.
We used to set 'does_nr' of an UE if we detect ENDC supported in the
UE capabilities.
Then we activate NR measurements if 'does_nr' is true.
The problem is that if the eNB is not connected to a gNB but the UE
reports some NR measurements (because a gNB is running somewhere near)
then the eNB will crash when starting the switch to NR.
A (quick) solution is to set 'does_nr' only if there is a gNB connected to
the eNB.
Maybe not the best solution. To be changed if needed.
Removing references to memcpy_dl_config_req and
memcpy_tx_req because these functions are leaking
memory. For our standalone mode we have created
new/modified memcpy_dl/tx_req functions.
- a new section in the configuration file to select security algorithms,
with new code to deal with it
- cleanup CG-ConfigInfo: specs seem to indicate that we must not
add mcg_RB_Config; the gNB has to deal with that
- as a consequence, modify fill_default_rbconfig() that is called in
every cases and needs security and bearer parameters
The new section in the configuration file looks like:
security = {
# preferred ciphering algorithms
# the first one of the list that an UE supports in chosen
# valid values: nea0, nea1, nea2, nea3
ciphering_algorithms = ( "nea0", "nea2" );
# preferred integrity algorithms
# the first one of the list that an UE supports in chosen
# valid values: nia0, nia1, nia2, nia3
integrity_algorithms = ( "nia0" );
};
Michael Cook