This makes sure all MS and TBF objects under a bts are freed when its
underlaying storage is freed (cleanup() is called).
Related: OS#5555
Change-Id: Idf3ad8b70c97313dec38a49d48cf36d6c9b404c7
Log before the action is done ("Detaching", not "Detached"). This way,
if something crashes we see that last line.
Change-Id: I6811d3772e2ac850741d3db5ec32be5c0812e81a
This allows distinguishing when a TBF didn't set the TFI. Useful to
identify dummy reject TBFs, etc, and make sure a non-dummy TBF set its
TFI properly.
Change-Id: Iecf54a24041bd14f4ef5b86e57c3732e1b69d463
Let's set them to match expectancies for this type of dummy TBFs, in
order to avoid acidental use/access of other timeslots to the one where
the reject was associated to.
Also use tbf_assign_control_ts() to log the TS used for the TBF, similar
to what's used in other places where control_ts is assigned.
Related: OS#5293
Change-Id: I32dcb29ad24519082b8665921efcce0b5a16d12e
These new counters allow the user to find out which kind of access are
MS requesting.
Related: SYS#4878
Change-Id: Id87c3a53d3acee92499987c843130e358f54742c
This helps distinguishing the case where a TBF is in the initial state
and the unexpected case where osmo_fsm_inst_state_name reports "NULL"
due to fi pointer being NULL.
Change-Id: Ieaabfc9fa0dedb299bcf4541783cf80e366a88c3
The test uses get_poll_fn() to submit a UL ctrl block on the next
expected poll TS+FN.
During initial transmit_dl_data(), 2 POLLs for DL_ACK are set on
different TS, but the test only updates the clock for one of them in
send_ul_mac_block(). As a result, one POLL item is left in the rb_tree,
and later on, when send_control_ack() is called, get_poll_fn() will pick
that 2nd DL_ACK poll FN+TS which was left untouched (due to sending no
events to the PCU clock) instead of the FN+TS which was expected to be
allocated by PCU for DL_ASS.
Until now this was not an issue since rcv_control_ack() was not properly
veirfying what the poll scheduler was expecting and accepted it. This is
no longer the case after the follow up patch refactoring
rcv_control_ack() and improving its robustness.
Change-Id: I3a4b089fe66a99e73e07bd1c690cd4d67752fad9
There's no real use in having those 2 methods separately, and only adds
complexity. Let's merge it to have 1 TBF code path handling DL ACK/NACK.
Change-Id: I546d2e46bda96a2f551b28673464e57831c71828
There are 2 methods "rcvd_dl_ack()" in osmo-pcu code. One is used by
osmo-pcu itself, and the other is only used in tests.
Changing the tests to use the same method as osmo-pcu allows removing
the second one, and with it, a lot of code and complexity out of
osmo-pcu.
Change-Id: I14d9312cb61534dc97fca83141b9c0cd933c9206
The side effect is that the timer is enabled for other scenarios where a
PACCH assignment happens, like an Assignment Reject or Ul Assignment
(that's why there's more lines showing up now in TbfTest.err).
Change-Id: Ib8ab2f7397ad05c6fcd5dd74af55a1e2c56e1463
The flag is only used to print some non interesting stuff, let's drop it
in order to simplify code. We can add later whatever we want in the new
shiny FSM.
Change-Id: I13f92f058c219f230d57b3c00b8ae1d187603813
The flag is only used to print some uninteresting stuff, let's drop it
in order to simplify code. We can add later whatever we want in the new
shiny FSM.
Change-Id: I20aa7f83cc4f32de129e64c74a91745b983a7b16
We are freeing the object immediately afterwards anyway, so no need to
pretend it went through the normal state release.
Leaving current state as it is actually provides more information on
what was the status/state at the time the TBF had to be freed.
Change-Id: I3016caaccc2c43e1e300f3c6042d69f8adcd9d69
PdchUlcTest output changes because the original state NULL is not
expected when transactioning to RELEASING upon MAX N310* being hit. In
any case, none of those events should happen in NULL state, but we
don't really care about TBF states there so we are fine with whatever
the state is.
Related: OS#2709
Change-Id: I516b8d989a0d705e5664f8aeaf7d108e0105aa16
While at it, method maybe_start_new_window is renamed to
rcvd_dl_final_ack to make more sense out of the code.
Related: OS#2709
Change-Id: Iebd650c1036ef2d5132789778be7117ce3391c01
Prior code was wrong, as in it did stuff diferent to what is expected
and actually done in osmo-pcu. In osmo-pcu code, the function is guarded
and only called in FLOW or FINISHED state by the scheduler.
Change-Id: If8029bee90adceee128ebb20c033756efd50e90e
At some point later in time the state_flags will most probably be split
into different variables, one ending up in a different FSM. It is moved
so far to the exsiting FSM from the C++ class since it's easier to
access it from C and C++ code, and anyway that kind of information
belongs to the FSM.
Related: OS#2709
Change-Id: I3c62e9e83965cb28065338733f182863e54d7474
This reverts commit 846fd248dc.
The commit introduced a leak of UL-TBF, which do not time out and
accumulate indefinitely, leading to out-of-memory for the running
osmo-pcu process.
A proper fix for the leak is pending on a development branch pespin/fsm,
but that branch is not yet ready for merging. Hence let's re-introduce
timer T3169 to avoid the OOM due to lingering UL-TBF.
Related: OS#5209
Change-Id: I99a7d2ddf68a76739ce2db1d6a44967dd97667b0
This is only an initial implementation, where all state changes are
still done outside the FSM itself.
The idea is to do the move in several commits so that they can be
digested better in logical steps and avoid major break up.
Related: OS#2709
Change-Id: I6bb4baea2dee191ba5bbcbec2ea9dcf681aa1237
This allows more easily finding when this specific scenario happens, and
can easily be compared against the PACCH one.
Change-Id: I609792a40fda2a798ca71a0e9f5639d0a0f011d7
Store direction check to simplify the code.
Get rid of 2-step LOGP to avoid multi-row logs in gsmtap log.
Change-Id: Ia2e061da82ddce564b2d768d8ade1672c22934e2
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
Document the function, make it look similar to usual TBF creation path
tbf_alloc_ul()->tbf_alloc_ul_tbf->tbf::setup(), which it mimics with
some differences.
Get rid of unneeded stuff like creating MS and settings its TLLI (that's
already done in only caller of the function). There's no need for
calling update_ms() either.
Change-Id: I61df2e4f0f0df1f8db941741a2d35a2319252c5e
Now that we finally handle N3101 and N3103 correctly, we can fix abuse
of T3169 we were doing to make sure TBFs were freed.
According to 3GPP TS 44.060, T3169 should be armed:
* N3101_MAX reached
* N3103_MAX reached
Furthermore, when T3169 is enabled, the tbf should be in state
RELEASING so that its USF is not used.
See full description: https://osmocom.org/issues/5033#note-2
Related: OS#5033
Change-Id: I2cec531e2633281b88f69ba065c0105580c81076
Use recently added PDCH UL Controller to verify expectancies.
Test test_packet_access_rej_prr is rewritten since it didn't make sense
as it was before, since it relied on osmo-pcu not checking stuff
properly to trigger the reject. The RACH requests are changed to
allocate 8 SBAs (maximum of 7 concurrent USFs). Allocating the SBA
doesn't reserve a USF, that happens at PKT RESOURCE REQUEST, hence we
end up exhausting resources there and triggering the REJECT at that
point.
Previous version of the patch allocated TBFs directly through RACH req,
and then submitted an extra PKT RESOURCE REQUEST which PCU didn't expect
to trigger the reject.
Change-Id: I157e72160317340ee7742c78c62a25d3d98fc01e
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
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 API is not really needed anymore, since anyway it works under the
assumption there can only be 1 POLL in transit per TBF, which isn't
necessarily true.
Change-Id: I875f51cade95faeb2d79dcebfead4c83e23a731b
Pau Espin
Neels Hofmeyr