Tbftest expectatins need to change because 5000/20 = 250 < 255, hence
the message is now sent as units of 20ms instead of seconds.
Related: OS#3928
Change-Id: I48b34b94b1a5dfb046a3a6cf8a0d944a7c9b6754
That field is not needed anymore, and it works only under the assumption
that only 1 poll request can be active at a time per TBF, which is not
true.
Change-Id: I9b8bed7741d385bab4cd8c64b841a78a02a05fe1
That field is not needed anymore, and it works only under the assumption
that only 1 poll request can be active at a time per TBF, which is not
true.
Change-Id: I63a34a702f028b871530fb7caeb13e8ea1cc78ac
Value 'false' is always passed by all callers of the function, so
there's no need to pass it. Furthermore, since it's false, there's no
need to access poll_fn since RRBP will always be invalid.
Change-Id: Ia48ce2a021865e76e813dedb22aca9c2522c5693
The poll_state logic was part of previous implementation (prior to pdch
ul controller) where the ssumption was that TBF could only had 1 POLL
request in transit, which is really not true. With current
infrastructure we don't need this state tracking at all.
Change-Id: Ie5b807ccd38aa736ae11b3310ca61ad0156ca4d4
The related ul_ass_state already implies polling is ongoing since we are
waiting for an ACK to be received from MS. Hence there's no need to
check poll_state there.
Change-Id: I5e12280a6835407fa452bd4d5df799d2672790ec
There's no good reason to allow only for 1 concurrent POLL requested to
a TBF, it was onyl done this was as an implementation limitation factor.
It can well happen that several multiple POLLs may be in transit at the
same time, eg to get DL ACK/NACK as well as to get a CTRL ACK for a Pkt
Cell Change Continue (NACC).
Change-Id: Ic4080db684a4626cae90dd574d123081981284ca
This allows easily checking the initial reason to trigger the poll when
either it is received or times out.
Later on this reason can be transformed into an FSM event and sent to
the related FSM.
Related: OS#5020
Change-Id: Ie8fefd1f47ad674ce597a8065b15284088956bde
TbfTest is updated to submit empty blocks to have somehow meaningful
output (at least as meaningful test results as before, not much). That's
because we must update bts->curr_fn to have polls expire.
Related: OS#5020
Change-Id: I683ca738ce5a133c49c36a1d94439a942d64a831
Right now we handle different types of UL allocations in different
classes like PollAllocator and SBAllocator, and they usually don't take
into account the other one in most cases. Furthermore, those objects are
usually per-BTS object, instead of per PDCH object.
This is a first step towards having a unified per-PDCH controller which
takes care of controlling what is scheduled and hence expected on the
uplink. Each PDCH has a UL Controller which keeps track of all reserved
uplink frame, be it SB, RRBP poll or USF assigned, all under the same
API.
As a first step, only the SBA part is fully implemented and used (being
it the easiest part to replace); TBF poll+usf will come in follow-up
patches later on. As a result, the SBAllocator per-BTS class dissappears
but some of its code is refactored/reused to provide more features to the
gprs_rlcmac_sba object, which is also further integrated into the new UL
Controller.
Related: OS#5020
Change-Id: I84b24beea4a1aa2c1528f41435f77bd16df2b947
Since a while ago, the data architecture was changed so that TBF is
guaranteed to always have a MS object associated. Hence, it makes no
sense to pass the MS object as a separate param as we can take it from
tbf object and makes code less confusing.
Change-Id: Idc0c76cf6f007afa4236480cdad0d8e99dabec5f
The old VTY command is marked as deprecated and still overrides the use
in case it's used.
Related: SYS#5358
Depends: libosmocore.git Change-Id I74fb0a3afc1ac4aadbfc609b882d929401f790eb
Depends: osmo-bsc.git Change-Id I8b97ea11bad5fe05f2f634945b5703ee9abde81d
Change-Id: I46f2a955b157a409055fca7fb917dc4f75482426
Use the fact that the MS must answer the RRBP of the Pkt Cell Change
Continue with a CTRL ACK to find out whether the message was received
successfuly or a retransmission is potentially required.
3GPP TS 44.060:
"""
When the mobile station receives the PACKET CELL CHANGE ORDER or
the PACKET CELL CHANGE CONTINUE message the mobile station shall
transmit a PACKET CONTROL ACKNOWLEDGMENT message in the specified
uplink radio block if a valid RRBP field is received as part of the
message; the mobile station may then switch to a new cell.
"""
Related: SYS#4909
Change-Id: I7cc28922e71699598da0ef6eb90136a47d3c002f
A new nacc_fsm is introduced per MS object, with its partner priv
structure struct nacc_fsm_ctx, which exists and is available in the MS
object only during the duration of the NACC procedure.
The NACC context is created on an MS whenever a Pkt Cell Change
Notification is received on Uplink RLCMAC, which asks for neighbor
information of a given ARFCN+BSIC.
First, the target ARFCN+BSIC needs to be translated into a CGI-PS
(RAC+CI) address. That's done by asking the BSC through the Neighbour
Resolution Service available in osmo-bsc using the CTRL interface.
Once the CGI-PS of the target cell is known, PCU starts a RIM RAN-INFO
request against the SGSN (which will route the request as needed), and
wait for a response containing the SI bits from the target cell.
After the SI are received, the scheduler is instructed to eventually
poll a TBF for the MS originating the CCN, so that we can send the SI
encapsulated into multiple Packet Neighbor Cell Data messages on the
downlink.
One all the SI bits are sent, the scheduler is instructed to send a
Packet Cell Change Continue message.
Once the message above has been sent, the FSM autodestroys itself.
Caches are also introduced in this patch which allows for re-using
recently known translations ARFCN+BSIC -> CGI-PS and CGI-PS -> SI_INFO
respectively.
Change-Id: Id35f40d05f3e081f32fddbf1fa34cb338db452ca
Under some circumstances, it could happen that a DL TBF is created as a
GPRS TBF due to not yet having enough information of the MS, and only
after the TBF is created the PCU gains that information and upgrades the
MS mode to "EGPRS". Hence, there's the possibility to run into a
situation where a GPRS TBF is attached to a EGPRS MS.
It may also happen sometimes that despite the TBF and the MS be EGPRS,
there's need to further limit the DL MCS to use, eg. MCS1-4 (GMSK).
As a result, when asking for the current DL (M)CS to use, we must tell
the MS which kind of limitations we want to apply. The later reasoning
was already implemented when GPRS+EGPRS multiplexing was added, but the
former was not being checked. Hence, by further spreading through the
call stack the "req_kind_mode" we match both cases.
Related: OS#4973
Change-Id: Ic0276ce045660713129f0c72f1158a3321c5977f
The TBF can sometimes be detached from an MS, for eg. when switching
from one MS object to another due to them being merged after we found
duplicate objects upon receiving new information from it, but that
change is instantaneous so it shouldn't be a problem. The only other way
where an MS can be detached from an MS is during the end of its (or the
MS) life, where it is not sending data anymore.
Hence, it is safe to drop those checks for MS not being null. Those
being trigger, it should be considered a bug.
Change-Id: If292a53a09a64664031e756bff4735b9c6ee8651
Those files are not really being used other than for calling
get_current_fn() which is just a placeholder to call
bts_current_frame_number on the global bts object.
Change-Id: I6d50a8c15c1de5e2a308a24b313a7776f94ae54f
Before, we used tho have a BTs object split into 2 parts, a C
gprs_rlcmac_bts struct and a C++ BTS struct, and "bts_data" naming was
used to distinguish them in variable names. Nowadays the struct is
finally combined into one, so there's no point in using this "bts_data"
terminology, we use always "bts".
Change-Id: I9852bf439292d1abc70711bea65698b21bde0ee8
Previous work on BTS class started to get stuff out of the C++ struct
into a C struct (BTS -> struct gprs_glcmac_bts) so that some parts of
it were accessible from C code. Doing so, however, ended up being messy
too, since all code needs to be switching from one object to another,
which actually refer to the same logical component.
Let's instead rejoin the structures and make sure the struct is
accessible and usable from both C and C++ code by rewriting all methods
to be C compatible and converting 3 allocated suboject as pointers.
This way BTS can internally still use those C++ objects while providing
a clean APi to both C and C++ code.
Change-Id: I7d12c896c5ded659ca9d3bff4cf3a3fc857db9dd
Currently the BTS object (and gprs_rlcmac_bts struct) are used to hold
both PCU global fields and BTS specific fields, all mangled together.
The BTS is even accessed in lots of places by means of a singleton.
This patch introduces a new struct gprs_pcu object aimed at holding all
global state, and several fields are already moved from BTS to it. The
new object can be accessed as global variable "the_pcu", reusing and
including an already exisitng "the_pcu" global variable only used for
bssgp related purposes so far.
This is only a first step towards having a complete split global pcu and
BTS, some fields are still kept in BTS and will be moved over follow-up
smaller patches in the future (since this patch is already quite big).
So far, the code still only supports one BTS, which can be accessed
using the_pcu->bts. In the future that field will be replaced with a
list, and the BTS singletons will be removed.
The cur_fn output changes in TbfTest are actually a side effect fix,
since the singleton main_bts() now points internally to the_pcu->bts,
hence the same we allocate and assign in the test. Beforehand, "the_bts"
was allocated in the stack while main_bts() still returned an unrelated
singleton BTS object instance.
Related: OS#4935
Change-Id: I88e3c6471b80245ce3798223f1a61190f14aa840
It is expected that the tbf object is freed at any moment in time, for
instance if osmo-pcu drops PCUIF connection with osmo-bts. I couldn't
find any reason why it would e dangerous to free the tbf, so let's
remove this message.
related: OS#4779
Change-Id: I4ab5ccaa5bf6257b18d8fd5ba06baab083821817
As we integrate osmo-pcu more and more with libosmocore features, it
becomes really hard to use them since libosmocore relies heavily on C
specific compilation features, which are not available in old C++
compilers (such as designated initializers for complex types in FSMs).
GprsMs is right now a quite simple object since initial design of
osmo-pcu made it optional and most of the logic was placed and stored
duplicated in TBF objects. However, that's changing as we introduce more
features, with the GprsMS class getting more weight. Hence, let's move
it now to be a C struct in order to be able to easily use libosmocore
features there, such as FSMs.
Some helper classes which GprsMs uses are also mostly move to C since
they are mostly structs with methods, so there's no point in having
duplicated APIs for C++ and C for such simple cases.
For some more complex classes, like (ul_,dl_)tbf, C API bindings are
added where needed so that GprsMs can use functionalitites from that
class. Most of those APIs can be kept afterwards and drop the C++ ones
since they provide no benefit in general.
Change-Id: I0b50e3367aaad9dcada76da97b438e452c8b230c
The assumption that TLLI 0x00000000 is invalid and can be used
as the initializer is wrong. Similar to TMSI, 0x00000000 is a
perfectly valid value, while 0xffffffff is reserved - use it.
According to 3GPP TS 23.003, section 2.4, a TMSI/P-TMSI with
all 32 bits equal to 1 is special and shall not be allocated by
the network. The reason is that it must be stored on the SIM,
where 'ff'O represents the erased state. According to section
2.6 of the same document, a local/foreign TLLI is derived from
P-TMSI, so the same rule applies to TLLI.
I manually checked and corrected all occurances of 'tlli' in the
code. The test expectations have been adjusted with this command:
$ find tests/ -name "*.err" | xargs sed -i "s/0x00000000/0xffffffff/g"
so there should be no behavior change. The only exception is
the 'TypesTest', where TLLI 0xffffffff is being encoded and
expected in the hexdump, so I regenerated the test output.
Change-Id: Ie89fab75ecc1d8b5e238d3ff214ea7ac830b68b5
Related: OS#4844
This patch avoids enabling EGPRS on MS objects if BTS/VTY assigned no
MCS supported/available for use.
As a result, if NO MCS is enabled/supported EGPRS won't be used despite
the MS announcing through EGPRS MS class that it supports EGPRS.
Change-Id: Ib19e9e006d851c2147de15f4aec36ab65250bdd3
Some tests were wrong (TypesTest) and required modification, since they
were setting a EGPRS MS but then expecting a GPRS assignment.
Change-Id: I9d3ee21c765054a36bd22352e48bde5ffca9225a
Avoid passing tons of params to internal helper function
tbf_nel_dl_assignment() in order to either fetch again the ms object or
create a new one. Let's instead create the ms function earlier if needed
and fill it with all the discovered information prior to calling the
helper function. This provides cleaner code and also better log output.
This way we also avoid trying to fill the MS twice and unneeded
getter+setter for TA.
tbf::imsi(): There' always an ms, so simply forward call to
ms()->imsi().
We can also get rid of assign_imsi, since the modified code is the only
place where it's used and there's already some code in place there to
update the MS. We instead merge it with set_imsi and keep the
duplication code to catch possible bugs from callers.
Move merge_and_clear_ms from tbf class to GprsMS, where it really
belongs.
Change-Id: Id18098bac3cff26fc4a8d2f419e21641a1f4c83b
This is another step forward towards a more clear data model where a TBF
always has a MS object (which may be lacking some information, and at a
later point when more information is found, it may actually be a
duplicated MS object and hence one duplicate removed and the TBF moved
to the object being kept).
This helps for instance in removing duplicated information stored in
the TBF which is really per MS, like ms_class, ta, etc. Since there's
always a MS object there's no need to keep a duplicate in both classes
in case there's no MS object.
It can already be seen looking at unit test logging that this kind of
data model already provides better information.
Some unit test parts were needed to adapt to the new model too.
Change-Id: I3cdf4d53e222777d5a2bf4c5aad3a7414105f14c
Output of all diag in different lines is really confusing, since the
user reads a timeout ocurred and then later in another line something
like "Downlink ACK was received" while no GSMTAP message shows any ACK.
Change-Id: I6a7d79c16c930f0712bc73b308409ececb1946ba
It's quite odd to see that in write_packet_downlink_assignment()
we initialize an 'RlcMacDownlink_t', so then the caller can use
the power of CSN.1 codec to generate the final sequence of bytes
to be transmitted, while in write_packet_uplink_assignment() we
already compose the final RLC/MAC message straight away using
the low-level bitvec API (like bitvec_write_field()).
I guess the reason is that at the time of writing this code, the
CSN.1 codec was not stable enough, so it was safer to generate
the message 'by hand'. This would also explain why we *decode*
the final RLC/MAC message in create_ul_ass() right after encoding.
Rewrite write_packet_uplink_assignment(), so now it initializes
a caller-provided 'RlcMacDownlink_t' structure. Given that it's
allocated on heap using talloc_zero(), do not initialize presence
indicators of fields that are not present in the message.
This would facilitate handling of frequency hopping parameters
in the upcoming changes, in particular we can now introduce a
function that would compose Frequency Parameters IE for both
write_packet_{downlink,uplink}_assignment().
Tested manually by running a GPRS-enabled network, as well as by
running test cases from ttcn3-pcu-test => no regressions observed.
Change-Id: I2850b91e0043cdca8ae7498a5fc727eeedd029b6
Related: SYS#4868, OS#4547
Initialize the bit vector to use already allocated memory,
so we would not need to allocate additional 23 bytes and
copy them from the bit vector to a msgb.
Change-Id: I4190707d7fa5b1c4c3db745635f88d5afb9e21ca
Since commit 322456ed47 (and previous
one), it is expected that a tbf object ALWAYS has a MS object referend
to it, even if it's a temporary copy which will later be merged when
TLLI/IMSI is retrieved and it is found that several MS objects relate to
the same MS.
The purpose of set_tlli_from_ul was mainly to update TBF's ms() to
old_ms before going through usual tbf->update_ms() path. That's not
really needed since ms() is already always set and TBFs for old_ms are
already freed in update_ms() and children function.
Change-Id: Ie8795e7a02032336e53febb65c11f9150c36d2a0
We have same kind of object splitted into two layers, in coding_scheme
and gprs_coding_scheme. Let's merge them together and get rid of the
class, which is not really useful because it's only a set of functions
operating on one enum value.
This change also fixes gcc 10.1.0 error about memseting a complex type
in rlc.h init().
Change-Id: Ie9ce2144ba9e8dbba9704d4e0000a2929e3e41df
It's super annoying seeing lots of functions being called everywhere
only to find out they are only incrementing a counter. Let's drop all
those functions and increment the counter so people looking at code
doesn't see dozens of code paths evyerwhere.
Most of the commit was generated by following sh snippet:
"""
#!/bin/bash
grep -r -l ^CREATE_COUNT_INLINE . | xargs cat | grep "^CREATE_COUNT_INLINE("| tr -d ",;" | tr "()" " " | awk '{ print $2 " " $3 }' >/tmp/hello
while read -r func_name ctr_name
do
#echo "$func_name -> $ctr_name"
files="$(grep -r -l "${func_name}()" .)"
for f in $files; do
echo "$f: $func_name -> $ctr_name";
sed -i "s#${func_name}()#do_rate_ctr_inc(${ctr_name})#g" $f
done;
done < /tmp/hello
grep -r -l "void do_rate_ctr_inc" | xargs sed -i "/void do_rate_ctr_inc(CTR/d"
grep -r -l "CREATE_COUNT_INLINE" | xargs sed -i "/^CREATE_COUNT_INLINE/d"
"""
Change-Id: I360e322a30edf639aefb3c0f0e4354d98c9035a3
The function is simply setting the ta on the ms, so simply make sure ta
is set on callers before passing the ms object.
Change-Id: Iebb9c57f458690e045ddc45c800209ad8cf621e0
It's really non-sense from architectural point of view to pass an
optional pointer to the MS holding the TBF and creating it otherwise.
TBFs shouldn't be creating MS they belong too.
This simple change requiring so many code line changes really exhibits
how badly entangled the object relationship is.
Another commit will follow doing the same for dl tbf.
Change-Id: I010aa5877902816ae246e09ad5ad87946f96855c
Original file from wireshark.git (packet-gsm_csn1.c) is being built and
maintained as a C file. There's no real need for us to maintain it as a
C++, and doing so will make both files derive over time (as already
happened). Let's keep it as a C compiler (which btw seems to be more
strict) to make it easier to port patches back and forth wireshark.git.
Take the chance to move some declarations we added to csn1.h to be able
to build it out of wireshark. Let's keep those in a separate header file
to ease looking for differences.
Change-Id: I818a8ae947f002d35142f9f5473454cfd80e1830
Including the <new> header is required as explained by the c++ specs [1]
osmo-pcu/src/tbf.cpp: In function ‘gprs_rlcmac_ul_tbf* tbf_alloc_ul_tbf(gprs_rlcmac_bts*, GprsMs*, int8_t, uint8_t, uint8_t, bool)’:
osmo-pcu/src/tbf.cpp:1002:39: error: no matching function for call to ‘operator new(sizetype, gprs_rlcmac_ul_tbf*&)’
1002 | new (tbf) gprs_rlcmac_ul_tbf(bts->bts);
| ^
Most of the times this issue is not detected because other STL headers
are already including <new>.
[1] http://www.cplusplus.com/reference/new/operator%20new/
Change-Id: Ie5fb536ae29dcf40e2a0dbe67432bebd61b8c7aa
The problem is that bitvec_free() is not NULL-safe. Ideally we
need to fix it in libosmocore [1], but let's also fix it here,
so OsmoPCU can be safely used with older libosmocore versions.
[1] https://gerrit.osmocom.org/c/libosmocore/+/17114
Change-Id: I7647d17b3d03f8e193ef6e793a2d3c1967744eef
Fixes: CID#208181, CID#208179
This will allow for configuration of some of the timers by the user,
and allow him to inspect current values being used.
It will be also useful for TTCN3 tests which may want to test some of
the timers without having to wait for lots of time.
Timers are splitted into 2 groups: BTS controlled ones and PCU controlled
ones. The BTS controlled ones are read-only by the user (hence no
"timer" VTY command is provided to change them).
TbfTest.err output changes due to timers being set up correctly as a
consequence of changes. Other application such as pcu_emu.cpp and
pcu_main.cpp had to previosuly set the initial values by hand (and did
so), but apparently TbfTest.c was missing that part, which is now fixed
for free.
Depends: libosmocore.git Id56a1226d724a374f04231df85fe5b49ffd2c43c
Change-Id: I5cfb9ef01706124be262d4536617b9edb4601dd5
Those namings my collide with usual osmocom "T" variable name associated
to a timer number, which will be added in following patches.
Change-Id: Ic2b5068a4882e4a043bf81496be30a378fdb9a09
In preparation for Channel Coding Command encoder in follow-up patches
let's add necessary helpers. Those are similar to previously used
helpers from GprsCodingScheme class but without CamelCase and with less
typo chances between Gprs and Egprs cases.
Change-Id: I6699cbc8d7ae766fa4d2b3d37e5f9ff1cf158b7e
Move Mode (EDGE/GPRS) definition and related functions outside of
GprsCodingScheme class. This allows us to use standard libosmocore
value_string functions.
Change-Id: I3baaac7f1ca3f5b88917a23c1679d63847455f47
The '.' is illegal character in counter names, as they are exported
via CTRL interface, where '.' has a special meaning that cannot be
used by strings comprising the variable name.
Change-Id: Ieb7496e1a30ab4f2bfe36c7b664dcdc034010a15
Wrap-around of var handling next id will luckly happen
long after initially assigned TBFs are already released.
Change-Id: I90ef64133986c556c1a529f5b966e847e6cabbad
There have been test failures on the osmo-pcu Jenkins builders due
to apparent clock drift. Switch relevant code from gettimeofday()
to clock_gettime() with CLOCK_MONOTONIC to prevent time from going
backwards and causing negative time deltas in calculations.
Change-Id: I775d85d0d3ac740330879e588bdab6fce7f0b46c
Related: OS#3225
As warned by gcc 8.1.0:
osmo-pcu/src/tbf.cpp: In constructor ‘gprs_rlcmac_tbf::gprs_rlcmac_tbf(BTS*, gprs_rlcmac_tbf_direction)’:
osmo-pcu/src/tbf.cpp:222:33: error: ‘void* memset(void*, int, size_t)’ clearing an object of type ‘struct gprs_rlc’ with no trivial copy-assignment; use assignment or value-initialization instead [-Werror=class-memaccess]
memset(&m_rlc, 0, sizeof(m_rlc));
^
In file included from osmo-pcu/src/tbf.h:24,
from osmo-pcu/src/bts.h:37,
from osmo-pcu/src/tbf.cpp:22:
osmo-pcu/src/rlc.h:234:8: note: ‘struct gprs_rlc’ declared here
struct gprs_rlc {
^~~~~~~~
Change-Id: Ifb0529b9ae6cd4300e5cbbd9151054792edbfe06
Currently, the TBF timer log messages lack the frame number in
the logoutput
- Add frame number to TBF timer related log-statements
Change-Id: I5a744dc5cd7c1de1baea13fffac026c83d091429
Related: SYS#4139
Patch-by: Octasic inc.
* store N310* counters in shared array similar to corresponding timers
* add functions to increment/reset counters
This avoids direct access to TBF counters from PDCH.
Change-Id: I8ffff9c7186f74bde7e6ac5f6e98f0b3e4c35274
Related: OS#1539
The PDCH class and corresponding functions are rather self-contained and
independent from BTS implementation. Let's move them into separate file
to make bts.cpp more manageable. As additional benefit it allow us to
somewhat untangle all the different cross-dependent includes.
Change-Id: Ie05e25361e6741a81b024679f9675c98d4923683
Related: OS#1539
Many files include unnecessary headers and don't include headers which
are actually used. Because of that combined with the fact that OsmoPCU
is a mixture of C and C++, it makes it hard to modularize code. Fix
this (using iwyu [1] tool):
* add missing headers
* remove unused headers
[1] https://include-what-you-use.org/
Related: OS#1539
Change-Id: I8c9f488a43b099c72b2d30d3245e7ba50872fc00
* drop unused parameters (from both functions and structs)
* document used parameters and return values
* tighten types used for parameters
* use consistent formatting
Tests are adjusted accordingly but test results are left untouched to
avoid regressions.
Change-Id: I39d81ab64ff790b9c4c2d0312a574485cd83e755
Related: OS#2282
* add functions/macros for setting TBF's poll state
* add function for checking TBF's poll state
Change-Id: I6db1c4e7bd0a49aeb5e391afe371c36b96c6a702
Related: OS#1539
* add functions/macros for setting TBF's UL ack state
* add functions for checking TBF's UL ack state
N. B: this should not be confused with TBF-UL state.
Change-Id: I144483447d4b0b93e775da0e926ee45eb8ab39f3
Related: OS#1539
* add functions/macros for setting TBF's UL/DL state
* add functions for checking TBF's UL/DL state
* move pre-free check into separate function
N. B: this should not be confused with TBF-UL or TBF-DL state.
Change-Id: Idcbf5775d17b1247f2ed01788f9b0788ce66e871
Related: OS#1539
Previously all TBF-related events were logged as part of DRLCMAC which
is too broad to make it practically useful due to excessive amount of
log messages generated. Introduce dedicated log categories for
TBF-related events. Adjust test output as necessary.
Change-Id: I64d660e5971263d5c63d2ba95d50625c16a594aa
We use the same approach for osmo_fsm: when state transition happens,
it's not very useful to always log the transition function itself, it's
much more useful to see where the actual transition comes from.
Change-Id: I348ba89bdda2b44c7019e9c893c764ee08c80bec
Related: OS#1759
Move actual calculation into shared function and use it to set window
size for TBF. TBT test output requires cosmetic adjuestements due to
extended debug output.
Change-Id: Ib9f4a277082da3c71007f5f3b4f2acac8b994540
Related: OS#1759
The UL and DL TBF use different classes implementing window
management. Hence it's better to use it explicitly instead of using the
common window management superclass inside common TBF superclass. While
at it, also remove the direct access to window class - use accessor
functions instead.
Related: OS#1759
Change-Id: I0b55aa8947db65f7206adcf53ea32b74a831d9e6
* introduce generic function to check whether particular flag was set
for'a TBF and clear it if necessary. Use this instead of
clear_poll_timeout_flag()
* add function to explicitly set assignment and appropriate state flags
Overall this makes the code easier to read and debug.
Related: OS#1759
Change-Id: Ic4560280c72f91700f2e19c6c7f6658dc29625c2
It either returns 0 or LLC queue size() which has size_t return
type. This means it can never be negative - hence it's better to use
size_t as return type.
Change-Id: I2a6e849d349ab12854976bd0d68537a370a9c83d
Fixes: CID181478
Return right after logging error if attempting to start or stop unknown
timer.
Change-Id: Ie6ae564d41a5e03270685c6bafb3504278eb3551
Fixes: CID181512, CID181514
When troubleshooting TBF timers we're not only interested in timer
duration but also in the code which triggered it. Let's use LOGPSRC to
log it: wrap t_start() in a macro for convenience.
Change-Id: If5f883ae52c469e5158bad24da9904fdc455582f
Related: OS#2407
Use generic timer handling infrastracture to handle assignment/reject
internal timer. Rename timer array accordingly. Use defines with
explicit second/microsecond values to make it more readable.
Change-Id: I63fb7e6f0695383a83472c836a381a055f64690b
Properly reset the counter when receiving valid RLCMAC block and update
it when no data is received as per 3GPP TS 44.060 §8.1.1.1
Change-Id: I2f79c6153dc4073c9d293b2824979e6381576682
Fixes: OS#2407
Previously TBF got single timer so the pending timer was automatically
cancelled when new one was scheduled. Let's make it more robust by
implementing independent T31 xx timers from 3GPP TS 44.060 §13.2 with
corresponding start/stop functions and counters.
The semantics of the timers is preserved as before: pending timers are
restarted unconditionally. It might be neecessary to change this later on
after spec review.
N. B. T0: used for assign/reject timeouts, have to be properly
attributed and documented first.
Change-Id: I0305873ca47534f53441247217881da59625e1f7
Related: OS#2407
When troubleshooting complex issues with TBF lifecycle, it's much easier
to follow the logs which are consistently formatted. Add LOGTBF*() macro
similar to struct-specific log routines we use in other Osmocom project
and use it to log TBF-related messages in a unified way. Tweak test
output accordingly.
Related: OS#2407
Change-Id: I388249afefc32d2f6e5cb5e5abc6daf4dbd284ea