The gitlog shows that these warnings were added in
744f745d7a by jolly (in 2012!).
As nobody has bothered for the past ten years, degrade them to comments.
Change-Id: Iebf9961cffbd7aa20b263f7dc0016a44782dec60
Related: osmo-bsc.git I9ef7e18f56aa86b48f0ffeec58406260736170f3
Remove the paragraph about writing to the Free Software Foundation's
mailing address. The FSF has changed addresses in the past, and may do
so again. In 2021 this is not useful, let's rather have a bit less
boilerplate at the start of source files.
Change-Id: I12b250e16426b125124def49e124e40ae93d0d58
It may happen after the A-bis connection recovery that the RF RESource
INDication message gets sent too early, while some timeslots are not
yet configured. This confuses the BSC and provokes error messages.
Change-Id: I00bc6fe67ea1bbedcd5d8640e73bd8b16b9e667f
Related: SYS#5313, SYS#4971
Starting from [1], interference levels on PDCH timeslots are also
reported over the A-bis/RSL. They may be useful for the BSC to
determine whether dynamic PDCH timeslots might be better used for
new circuit switched connections, or whether alternative PDCH slots
should be allocated for interference reasons.
* Handle GSM_LCHAN_PDTCH in lchan_report_interf_meas().
* Rework pcu_tx_interf_ind() to accept 'struct gsm_bts_trx'.
* Call pcu_tx_interf_ind() from l1sap_interf_meas_report().
Regarding pcu_tx_interf_ind(), it's better to call this function
from the upper layers once, rather than calling it from various
places in the model specific code.
[1] I5b4d1da0920e788ac8063cc765fe5b0223c76758
Change-Id: I3fbaad5dbc3bbd305b3ad4cb4bfb431a42cfbffc
Related: SYS#5313
When the paging queue is filled up to a critical level, pagings from the
PCU should be dropped as each immediate assignment paging from the PCU
is worth 4 normal CS pagings. Also the PCU may still issue pagings if the
paginging queue is already full and CS pagings are dropped. In a
congestion situation it is more important to get the CS rather than PS
pagings through.
Change-Id: I30f97672d7a0c369c4a656e878ab8cbbd83e31ea
Related: SYS#5306
They will gain support to be activated as SDCCH/8 soon too.
Related: SYS#5309
Depends: libosmocore.git I56dcfe4d17899630b17f80145c3ced72f1e91e68
Change-Id: Ia617d20fc52f09dbab8f4516c06fa1efac08e898
This new extension protocol is used to forward Osmocom PCUIF messages
BSC<->BTS<->PCU.
It will be sent re-using the IPA multiplex of the OML link between
BSC and BTS. BTS is responsible for forwarding the message over the unix
socket to the PCU.
PCUIF existing RX path needs to be reworked in order to accept
variable-size messages, in order to be able to transparently forward
messages without knowing about them (the new container message is
variable-length).
Related: SYS#5303
Change-Id: I73fdb17107494ade9263a62d1f729e67303fce87
The PDCH multiframe contains 48 data slots, 2 PTCCH slots, and
2 IDLE slots. The later two can be used for the interference
measurements, since the UEs shall not transmit on them.
bts_report_interf_meas() is called every 104 TDMA frames, what
corresponds to 2 PDCH multiframe periods. Report interference
levels on PDCH timeslots from this function.
Change-Id: I56f83db5264c246ec1b4b8a973105a4fc09931fb
Related: SYS#5313, OS#1569
OsmoPCU will need this SI2 in order to gain knowledge of the BCCH
Frequency List being broadcasted, in order to build a per-MS specific
Neighbour List using NC_FREQUENCY_LIST bits in Packet Measurement Order.
Related: SYS#5303
Change-Id: If70c64f941f621a9a68aef2c846639b5c7f2f74b
The TSC (Training Sequence Code) value in 'struct gsm_bts_trx_ts'
is always initialized in oml_rx_set_chan_attr() during the OML
bootstrapping, so there is no need for gsm_ts_tsc() - remove it.
Store the initial TSC value in 'struct gsm_bts_trx_ts', so we can
apply a different TSC value during the RSL CHANnel ACTIVation.
Store the Training Sequence Code/Set in 'struct trx_dl_burst_req'.
These values are indicated to the transceiver (TRXDv2 PDUs, 'MTS'
field) and used by the new TRX_{GMSK,8PSK}_NB_TSC macros.
Change-Id: I3744bc308b99ef941e6e9d139444e414abebc14b
Related: SYS#4895, OS#4941
Similar to what we have been doing for TCH channels, we want to make
sure all MAC blocks get to the upper layers, even if containing invalid
data (flagging it with data_len=0) so that upper layers (osmo-pcu
through PCUIF in this case) can rely on FN clock without gaps due to
Rx errors.
Related: OS#5020
Change-Id: I0b04b013b7bad5ff53d6a969ff0128b37f7f62d5
In function pcu_tx_si_all(), the variable rc is not initalized. If
pcu_tx_si() fails, then rc is populated with value -EINVAL, but if all
si transmissions succeed, which is the normal case, rc remains
uninitalized.
Change-Id: I571fdb4f175fb259b77f989554f569fc2230dfe6
Related: CID#216932
This patch PCUIF extends the SAPI 4 that is used
to transfer SI13 only, so that it can transfer SI1 and SI3 as well.
The system information SI1, SI3 and SI13 is needed by the NACC RIM
application which runs inside osmo-pcu.
Depends: osmo-pcu I5138ab183793e7eee4dc494318d984e9f1f56932
Change-Id: Ib7aeb41e634ad6fcab3766a4667b0267c749436a
Related: SYS#5103
Sending INFO.ind unconditionally in pcu_if_signal_cb() provokes
a lot of warnings during OML bootstrapping / termination:
DPCU INFO pcu_sock.c:247 Sending info
DPCU INFO pcu_sock.c:262 BTS is up
DPCU INFO pcu_sock.c:205 (bts=0,trx=0) unavailable for PCU (op=Disabled adm=Unlocked)
DPCU INFO pcu_sock.c:205 (bts=0,trx=1) unavailable for PCU (op=Disabled adm=Unlocked)
Do not call pcu_tx_info_ind() if the PCU is not connected.
Change-Id: If8bc8bec5ad808be8d40e91278a4a4fde84920b0
The PCUIF is a 'brilliant' protocol: some fields are expected to
be in the network byte order, some in the host order. The NSVC
remote address and local/remote ports is a good example:
- byte order of the address must be the network order, and
- byte order of the ports must be the host order.
Change-Id: I383cab0b58b62734090023298da8c5a341c670d5
Fixes: I310699fabbfec4255f0474f31717f215c1201eca
Related: SYS#4915
Using gsm_bts_trx_num() involves redundant iterations over the
list of transceivers - we definitely don't want them.
Change-Id: I4bd40ffcc1e925412a21b0a934bbfdeddbc6ad1f
With PCU interface version 10 it supports IPv6 NSVC. The new OML IE
NM_ATT_OSMO_NS_LINK_CFG allows to configure IPv6 NSVC.
Change-Id: I310699fabbfec4255f0474f31717f215c1201eca
Introduce a address_type in the NSVC configuration pass the given
protocol. The remote_ip is network byte order, the default
encoding for in_addr and in6_addr.
Change-Id: I6d60277eb5b8d938d9f38114c933d58ee1b884c9
Related: Iae854875a45dbc29cd46a267ccaf60f1f2ac2973
Related: SYS#4915
Avoid announcing to PCU as available a dyn TS not yet fully
configured in the phy. Otherwise when we receive the Chan Activation
over the PCU sock while pchan_is still is not PDCH, and we fail to fully
activate the channel at that time.
See previous commit description for more information on the issue.
We still want to check for pchan_want because we actually want to stop
announcing the TS when it is in progress of being changed to TCH. This
configuration change is continued/finished once we receive the resulting
Release from PCU.
Change-Id: I8e2b170c1f94e7dfe2576a1fc899bf9c8a826a44
Something is wrong currently with dynamic TS and PDCH activation.
Apparently there's a race condition between activation in BTS lower
layers (example in TRXC) and against PCU.
Currently, when a GSM_PCHAN_TCH_F_TCH_H_PDCH is configured, we set
ts->dyn.pchan_want = GSM_PCHAN_PDCH and submit the async activation
through lower layers (CMD SETSLOT), and once the lower layer acks it we
set ts->dyn.pchan_is = pchan_want (when receiving RSP SETSLOT). However,
we seem to be advertising available TS to PCU based on pchan_want,
instead of pchan_is, which means we advertise channels not yet fully
configured. As a result, we may receive a Channel Act coming from PCU
for a given TS for which we didn't receive confirmation from upper
layers, meaning pchan_is is still GSM_PCHAN_NONE. This is by no means
expected in following code, so let's avoid going further over it.
Actual issue will be fixed in follow-up patch.
Change-Id: I9edb5b8a14ffaed3e24c10c2c7a3f618e05f3a01
This reverts commit df93a448b7.
It was to early because the frequency hopping wasn't ready to be merged.
Change-Id: I6e67f4cd9828afa53ed4e783b83b039ee6a1d570
Introduce a address_type in the NSVC configuration pass the given
protocol.
The remote_ip is network byte order, the default encoding for in_addr and in6_addr.
Change-Id: I4067b1af041b2cdad60d6fb16c9caee98bc218dd
It's not something useful to see unless someone's really debugging that
part, and it shows up quite frequently.
Change-Id: I3c0dee36c7d34e6b1341b517ce3bcd1b275e69c1
New define is available since libosmocore 1.1.0, and we already require
1.3.0, so no need to update dependenices.
Let's change it to avoid people re-using old BSC_FD_READ symbol when
copy-pasting somewhere else.
Change-Id: Id51ccb2c273c5f0fa4986f28bbd69a72d2dbaa0e
Since there can be multiple PDCH channels configured on different
timeslots, different TRXes, and BTSes, the PTCCH/U handling code
in OsmoPCU needs to know the exact origin of a given RACH.ind.
Otherwise, it is not known which subscriber originated a given
PTCCH/U indication, and hence it is impossible to send PTCCH/D
Timing Advance notification properly.
Fortunately, we can extend the RACH.ind message without even
bumping the protocol version, because every single PDU has a
fixed size defined by the largest message - INFO.ind. In case
if the actual message payload is smaller, the rest is filled
with a constant padding byte (0x00).
Older versions of OsmoPCU will consider the new fields as padding,
while the messages from older OsmoBTS versions will always have
both fields set to 0x00. Since C0/TS0 cannot be configured to
PDCH, this can be easily detected on the other end.
Change-Id: Iff38934a108b6b1cd298669834263a7d5296c3f6
Related: OS#4102, OS#1545
According to 3GPP TS 45.010, section 5.6.2, for packet-switched
channels the BTS shall monitor the delay of the Access Bursts
sent by the MS on PTCCH and respond with timing advance values
for all MS performing the procedure on that PDCH.
According to 3GPP TS 45.002, section 3.3.4.2, PTCCH (Packet Timing
advance control channel) is a packet dedicated channel, that is
used for continuous Timing Advance control (mentioned above).
There are two sub-types of that logical channel:
- PTCCH/U (Uplink): used to transmit random Access Bursts
to allow estimation of the Timing Advance for one MS in
packet transfer mode.
- PTCCH/D (Downlink): used by the network to transmit
Timing Advance updates for several MS.
As per 3GPP TS 45.003, section 5.2, the coding scheme used for
PTCCH/U is the same as for PRACH as specified in subclause 5.3,
while the coding scheme used for PTCCH/D is the same as for
CS-1 as specified in subclause 5.1.1.
The way we used to handle both PTCCH/U and PTCCH/D is absolutely
wrong - they have nothing to do with xCCH coding. Instead, we
need to use tx_pdtch_fn() for Downlink and rx_rach_fn() for Uplink.
In l1sap_ph_rach_ind() we need to check if an Access Burst was
received on PTCCH/U and forward it to OsmoPCU with proper SAPI
value (PCU_IF_SAPI_PTCCH). To be able to specify a SAPI, a new
parameter is introduced to pcu_tx_rach_ind().
Change-Id: I232e5f514fbad2c51daaa59ff516004aba97c8a3
Related: OS#4102
All MS/UE must be notified of ETWS Primary Notifiations.
Depending on their state, the notification goes different paths:
* CS dedicated mode: BSC sends it as L3 message over LAPDm / DCCH
* CS/PS idle mode: BTS sends paging messages on PCH
* PS TBF active: PCU send Packet Application Info
This enables the last of the three methods by passing any
ETWS Primary Notifications received over RSL via the PCU socket into
the PCU.
Change-Id: Ic0b3f38b400a0ca7e4089061ceb6548b0695faa6
Related: OS#4047, OS#4048
Convert the cell identity to LE when sending it to the PCU via unix
socket, just like we do it with the location area code.
In the Osmocom stack, the CellID is configured in OsmoBSC, sent as BE
via RSL to OsmoBTS, then with a socket to OsmoPCU (where OsmoPCU expects
it to be LE in a LE system). OsmoBTS was always sending the CellID as
BE to OsmoPCU. In March 2018, a regression in OsmoPCU [1] caused an
endianness swap in the CellID on LE systems, resulting by chance in the
correct, LE encoded, CellID as it should have been sent from OsmoBSC
(for LE systems). This regression was fixed in March 2019 [2].
I've verified this fix with a TTCN3 test [3].
[1] I787fed84a7b613158a5618dd5cffafe4e4927234 (osmo-pcu)
[2] I2f6cc930c5dbf8dac386b24b0756df2efe8199e4 (osmo-pcu)
[3] I6516808f4b9e9a2301f9ccc1e55ded14e7334c33 (osmo-ttcn3-hacks)
Related: OS#3854
Change-Id: I68faf4558f0686fb2a3db24077dceaae05bf0262
Vadim Yanitskiy
Oliver Smith
Philipp Maier
Pau Espin
Harald Welte
Alexander Couzens
Martin Hauke