the code hasn't been maintained for a while an likely needs to be
adapted for a real-world scenarios.
in order to avoid having to maintain two MAC/PHY interfaces we
remove the code from now.
some commands were executed from the calling thread which may lead
to concurrent access to members. Detected by TSAN. The patch
moves all remaining calls (the majority was alread moved) to the
Stack task queue.
fixed through the right usage of mutexes in both TTCN PHY and syssim.
nested mutex locking is solved by calling SS from the PHY after
releaseing the PHY lock again.
* Protect PHY SR signal management in a class
* Protect intra_freq_meas vector
* Protect cell and srate shared variables in thread-safe classes
* srsue,srsenb: include TSAN options header
* Protect ue_rnti_t and rnti scheduling windows behind thread-safe classes
* Protect access to state variable in sync_state
* Protect access to metrics configuration
* Protect access to is_pending_sr
* Protect access to UE prach worker
* Protect UE mux
* Avoid unlocking mutex twice
* Fix data races in RF/ZMQ
* Fix data races in intra_measure and PHY
* Fix minor data races in MAC
* Make TSAN default behaviour to not halt on error
* Fix blocking in intra cell measurement
* Address comments
Co-authored-by: Andre Puschmann <andre@softwareradiosystems.com>
the EPS bearer manager was only informed when a single DRB
was removed but not when entering idle which requires to
remove all bearers.
This cause the service request to fail.
this is a rather large commit that is hard to split because
it touches quite a few components.
It's a preparation patch for adding NR split bearers in the next
step.
We realized that managing RLC and PDCP bearers for both NR and LTE
in the same entity doesn't work. This is because we use the LCID
as a key for all accesses. With NR dual connectivity however we
can have the same LCID active at the same time for both LTE and NR
carriers.
The patch solves that by creating a dedicated NR instance for RLC/PDCP
in the stack. But then the question arises for UL traffic on, e.g. LCID 4
what PDCP instance the GW should use for pushing SDUs. It doesnt' know
that. And in fact it doesn't need to. It just needs to know EPS
bearer IDs. So the next change was to remove the knowledge of what
LCIDs are from the GW. Make is agnostic and only work on EPS bearer IDs.
The handling and mapping between EPS bearer IDs and LCIDs for LTE
or NR (mainly PDCP for pushing data) is done in the Stack because
it has access to both.
The NAS also has a EPS bearer map but only knows about default and
dedicated bearers. It doesn't know on which logical channels they
are transmitted.
this patch mainly modernizes the bearer creation to use smart pointers.
that allows to simplify the error handling.
ue_stack is changed to match new interface. This commit compiles
but doesn't work.
the issue let to unwanted log warning at the end of the UE
execution when the PHY was still pushing DL PDUs while MAC
was already stopped.
This fixes#3003
we had it returning int but had a bug in using the return value properly,
i.e. handling when -1 was returned in RLC TM.
Thinking about it more, it doesn't make sense to have a negative return
value here anyway. Either the RLC can return a PDU or not. If it can't the
returned lenght is zero.
general-purpose method for lower layers to signal protocol
failures to higher layers, i.e. RRC.
In the current case, implement a direct release of the UE (enb) or
a reestablishment (UE).
races detected with TSAN, primarily the ue_sync object which isn't
thread-safe is accessed by all workers to set the CFO and by the
sync thread to receive samples (which read the CFO).
The patch introduces shadow variables that are updates from the
main thread before/after the sync is executed. The atomic shadow
variables can then be read from otherthreads without holding a
mutex, i.e. blocking the sync.
in the mac_test the tb_decoded() method was called twice for
the 2nd codeword, causig TSAN to complain about an unlocked mutex
being unlocked.
The patch resolves the potential issue only calling tb_decoded
for a grant/tb thas has a non-zero MCS.
The patch also adjusts the reset function to have a safe and "unsafe"
version to be called from inside the class, similar to other
classes where we do the same.
this is an attempt to fix#2850 by defering the transmission of
the connection setup complete until the PHY has applied
the dedicated config in the connection setup.
- the consumer does multi-staged waiting:
1. spins first across all queues in a RR fashion
2. each queue access is done with a try_lock.
3. if the try_lock fails, it increases the number of spins needed
2. if no queue had data, the consumer sleeps for 100 usec.
- no differentiation between queues, in terms of notification features
preperation for Split bearer support. This patch is needed to allow
split bearer. Otherwise, even if the config is set in the eNB, it
will not enable split bearers.
With the new design, each queue created in the multiqueue object has its own mutex.
Pushing tasks to separate queues will, therefore, not cause contention.
There will be, however, still contention between the popping thread and the pushing threads.
this fixes a linking problem with RPi 3 (and probably others) running
with Raspbian (new Raspberry Pi OS) that can't use the inline
atomic functions but instead require linking against the lib -latomic.
The CMake code is based on SoapyRTLSdr file (licensed under MIT)
https://github.com/pothosware/SoapyRTLSDR/blob/master/CheckAtomic.cmake
- use const char* instead of std::string in enumerated<>::to_string() to avoid mallocs.
- Remove the use of "typedef", and use "using" keyword instead.
- Fix rrc_nr::setup_release_c<>::to_string() broken linkage.
the low timout of 10ms was:
1) causing too frequent measurement reports
2) causes a MO ping test to fail where the ICMP request
was sent on the LTE carrier but never got a reply because
the MCG addition was inbetween
log level for PHY-NR wasn't set so:
16:00:32.202953 [PHY-NR ] [I] [ 8024] Setting RAR Grant rnti=4602 dci=rar hop=0 f_alloc=0x32 t_alloc=0x1 mcs=4 tpc=3 csi=0
was always printed. Also use the logger for the PRACH
this commit adds a complete DL HARQ entity to the MAC of the UE.
It also refactors demux into an own class and adapts the PHY-MAC
interface to use the new MAC capabilities.
this patch adds a basic UL HARQ entity for NR.
The patch also updates some interfaces between MAC/RA/HARQ,
i.e. get_temp_crnti().
It also adds a Msg3 unit test.
the created RLC PDU was too large to fit inside the MAC grant
because only the header room for the short L field was used.
The patch determines the correct size before passing the opportunity to RLC.
It also improves logging in error case by using the MAC logger instead of
stderr/stdout when error occurs.
building on the previous refactor this patch now adds support
for peridoic BSR reporting (using short BSR). It furthermore does
the following changes:
* add BSR packing
* add proc_bsr_nr unit test
* move mac_nr test code into test folder under src (needs to be done with other test code too)
this should fix log warnings then demux was trying to feed MAC CEs
to RLC:
10:50:54.845116 [MAC ] [I] [ 1153] Handling subPDU 1/2: rnti=0x0 lcid=61, sdu_len=1
10:50:54.845117 [RLC ] [E] Radio bearer id must be in [0:11] - 61
10:50:54.845118 [RLC ] [W] LCID 61 doesn't exist. Dropping PDU.
10:50:54.845119 [MAC ] [I] [ 1153] Handling subPDU 2/2: rnti=0x0 lcid=63, sdu_len=33
10:50:54.845119 [RLC ] [E] Radio bearer id must be in [0:11] - 63
* refactor some common methods to mac_common.cc
* add common mux_base class
* move UL PDU generation to mux class
* add logical channel registration to MAC, MUX, BSR
* add initial proc BSR
* add basic MAC NR test
* rework MAC interfaces
inspired by accepted (but not yet merged) PR to include the
(unique_)byte_buffer_t for MAC/PHY interfacing, this patch adds
a few more useful bits to that. Buffer management for UL data is now
done in MAC and only a pointer to the data is passed in the UL action.
* Move Tx softbuffer to MAC (until UL HARQ class is ready)
* Remove temparal data member in cc_worker
* Remove memcpy after packing MAC PDU
this resolves issue #2277 in which a warning was logged when
the CC worker decoded a 2nd phantom PDDCH.
It's difficult to avoid this 2nd PDDCH without addional computation
that we don't want add at this stage.
Rather than filtering out the Warning in the log post-processing,
we reduce the log level to info.
after adding the thread-safe PCAP writer functionality to the EUTRA
MAC object it became clear that we don't wont to replicate the
same for the NR object.
This patch therefore refactors the class that now supports both EUTRA and
NR rats. The old mac_nr_pcap.[h/cc] has been deleted. All test-cases
and usages now use the new object that needs to pass the RAT type in
the ctor.
this patch addresses the last open point of #2160
this causes a debug log line as the first message in every ue.log because
the loggers/loglevels aren't configured yet.
22:10:02.463396 [MAC ] [D] [ 0] Msg3 buffer flushed
the msg3_flush isn't needed because all variables are initialized.
this patch fixes an issue with TC_9_3_1_17 after the "send attach in RRC connected" issue
has been fixed. The TC failed because the UE would always attempt to re-attach, even
after receiving an explicit detach request WITHOUT re-attach from the network.
According to TS 24.301 Sec. 5.5.2.3.2 the handling of that message largely depends
on the detach cause sent by network. Since we don't currently parse and handle
that the simplest solution here is to just enter deregistered:::null.
The patch is also part of the fix for issue #2237
this is an attempt to fix issue #2237 that cause the UE to fail to
attach because the attach request wasn't resent after T3410+T3411
expired.
this was only because RRC wasn't idle at that stage and the attach
request generation was aborted.
The patch fixes this by passing the NAS PDU directly to RRC in
connected state.
The patch also converts the blocking PDU alloc to a non-blocking one.
* Replaced UE logger in the ue class.
* Replaced loggers in the main phy class and prach.
* Replaced loggers in phy common and ta_control.
* Replace loggers in cc and sf workers.
* Replaced loggers in intra_measure, scell_recv, search, sfn_sync, sync.
* Remove last uses of the old loggers in the main phy class.
* Remove stray newline in logs.
* Replaced loggers in ue gw.
* - Started to replace loggers in the ue stack.
- Replaced loggers in usim and pcsc.
- Adapted nas and usim tests.
* Replace loggers in nas.
* Added missing log init calls in two previously modified tests.
* Replaced logger in nas idle procs.
* Replaced loggers in nas emm state.
* Replaced loggers in tft packet filter and adapted tft test.
* Replaced loggers in main RRC class.
* Replaced loggers in RRC cell.
* Replaced loggers in RRC meas.
* Replaced loggers in rrc procedures.
* Started logger replacement in MAC layer, more precisely in demux and dl_harq classes.
Been unable to inject loggers in construction for dl_tb_process due to very weird static assertions in the std::vector code being the type not constructible which is not true, so instead use the main MAC logger directly.
* Replaced loggers in mac mux class.
* Replaced loggers in mac pro_bsr.
* Replaced loggers in mac proc phr.
* Replaced loggers in mac proc SR and RA.
* Replace loggers in mac UL HARQ.
* Replaced loggers in main ue stack class.
* Fixed nas test crashing due to a null string.
* Ported mac_test to use the new loggers.
* Removed TTI reporting for the PHY log as the old logger did.
* Replaced loggers in UE phy tests.
* Configure loggers in nas_test.
* Replaced loggers in rrc_meas_test.
* Replaced loggers in rrc_reconfig_test.
* Added missing newline in tft_test.
* Fix compilation errors in TTCN3 tests.
* Fix linker error detected in CI and warning.
* Replaced loggers in TTCN3 tests.
* Fix a text replace error in some log messages.
* Remove trailing newlines from log entries.
* Remove old logger from rrc.
* Flush backend before printing the test status.
* - Fix compilation error from previous rebase.
- Remove trailing newlines from some missing log entries.