In libosmocore Change-ID I1834d90fbcdbfcb05f5b8cfe39bfe9543737ef8f
we have introduced ipa_ccm_id_resp_parse() as a bugfixed replacement
of ipa_ccm_idtag_parse().
The main difference is that the returned "value" parts now have
a correct reported "length", whereas before this commit they all
reported a one-byte too-long "length" for each IE.
Change-Id: I7d5ab323989c13d0cc6ff05547306edb918e423f
Add FSMs:
- timeslot_fsm: handle dynamic timeslots and OML+RSL availability.
- lchan_fsm: handle an individual lchan activation, RTP stream and release,
signal the appropriate calling FSMs on success, failure, release.
- mgw_endpoint_fsm: handle one entire endpoint with several CI.
- assignment_fsm: BSSMAP Assignment Request.
- handover_fsm: all of intra, inter-MO and inter-MT handover.
Above FSMs absorb large parts of the gscon FSM. The gscon FSM was surpassing
the maximum amount events (32), and it is more logical to treat assignment,
handover and MGW procedures in separate FSMs.
- Add logging macros for each FSM type:
- LOG_TS()
- LOG_LCHAN()
- LOG_MGWEP(), LOG_CI()
- LOG_ASSIGNMENT()
- LOG_HO()
These log with the osmo_fsm_inst where present.
New style decision: logging without a final newline char is awkward,
especially for gsmtap logging and when other logs interleave LOGPC() calls;
we have various cases where the final \n goes missing, and also this invokes
the log category checking N times instead of once.
So I decided to make these macros *always* append a newline, but only if
there is no final newline yet. I hope that the compiler optimizes the
strlen() of the constant format strings away. Thus I can log with or without
typing "\n" and always get an \n termination anyway.
General:
- replace osmo_timers, state enums and program-wide osmo_signal_dispatch()
with dedicated FSM timeouts, states and events.
- introduce a common way to handle Tnnn timers: gsm_timers.h/.c: struct T_def.
These can be used (with some macro magic) to define a state's timeout once,
and not make mistakes for each osmo_fsm_inst_state_chg().
Details:
bsc_subscr_conn_fsm.c:
- move most states of this FSM to lchan_fsm, assignment_fsm, handover_fsm and
mgw_endpoint_fsm.
- There is exactly one state for an ongoing Assignment, with all details
handled in conn->assignment.fi. The state relies on the assignment_fsm's
timeout.
- There is one state for an ongoing Handover; except for an incoming Handover
from a remote BSS, the gscon remains in ST_INIT until the new lchan and conn
are both established.
- move bssmap_add_lcls_status() to osmo_bsc_lcls.c
abis_rsl.c:
- move all dynamic timeslot logic away into timeslot_fsm. Only keep plain send/receive functions in
abis_rsl.c
- reduce some rsl functions to merely send a message, rename to "_tx_".
- rsl_ipacc_mdcx(): add '_tx_' in the name; move parts that change the lchan state out into the
lchan_fsm, the lchan->abis_ip.* are now set there prior to invoking this function.
- move all timers and error/release handling away into various FSMs.
- tweak ipa_smod_s_for_lchan() and ipa_rtp_pt_for_lchan() to not require an
lchan passed, but just mode,type that they require. Rename to
ipacc_speech_mode*() and ipacc_payload_type().
- add rsl_forward_layer3_info, used for inter-BSC HO MO, to just send the RR
message received during BSSMAP Handover Command.
- move various logging to LOG_LCHAN() in order to log with the lchan FSM instance.
One drawback is that the lchan FSM is limited to one logging category, i.e. this moves some logging
from DRR to DRSL. It might actually make sense to combine those categories.
- lose LOGP...LOGPC logging cascades: they are bad for gsmtap logging and for performance.
- handle_classmark_chg(): change logging, move cm2 len check out of the cm3 condition (I hope that's
correct).
- gsm48_send_ho_cmd(): split off gsm48_make_ho_cmd() which doesn't send right away, so that during
inter-bsc HO we can make an RR Handover Command to send via the MSC to the remote BSS.
assignment_fsm.c:
- the Chan Mode Modify in case of re-using the same lchan is not implemented
yet, because this was also missing in the previous implementation (OS#3357).
osmo_bsc_api.c:
- simplify bsc_mr_config() and move to lchan_fsm.c, the only caller; rename to
lchan_mr_config(). (bsc_mr_config() used to copy the values to mr_bts_lv
twice, once by member assignment and then again with a memcpy.)
- During handover, we used to copy the MR config from the old lchan. Since we
may handover between FR and HR, rather set the MR Config anew every time, so
that FR rates are always available on FR lchans, and never on HR lchans.
Depends: I03ee7ce840ecfa0b6a33358e7385528aabd4873f (libosmocore),
I1f2918418c38918c5ac70acaa51a47adfca12b5e (libosmocore)
Change-Id: I82e3f918295daa83274a4cf803f046979f284366
Move all of libbsc/ into osmo-bsc/, and separate/move some implementations to
allow linking from utils/* and ipaccess/* without pulling in unccessary
dependencies.
Some utilities use gsm_network and gsm_bts structs, which already include data
structures for fairly advanced uses. Move initialization that only osmo-bsc
needs into new bsc_network_init() and bsc_bts_alloc_register() functions, so
that the leaner tools can use the old gsm_* versions without the need to link
everything (e.g. handover and lchan alloc code).
In some instances, there need to be stubs if to cut off linking "just before
the RSL level" and prevent dependencies from creeping in.
- abis_rsl_rcvmsg(): the only program currently interpreting RSL messages is
osmo-bsc, the utils are merely concerned with OML, if at all.
- paging_flush_bts(): ip.access nanobts models call this when the RSL link is
dropped. Only osmo-bsc actually needs to do anything there.
- on_gsm_ts_init(): the mechanism to trigger timeslot initialization is related
to OML, while this action to take on init would pull in RSL dependencies.
utils/ and ipaccess/ each have a stubs.c file to implement these stubs. Tests
implement stubs inline where required.
From src/utils/, src/ipaccess/ and tests/*/, link in .o files from osmo-bsc/.
In order for this to work, the osmo-bsc subdir must be built before the other
source trees. (An alternative would be to include the .c files as sources, but
that would re-compile them in every source tree. Not a large burden really, but
unless linking .o files gives problems, let's have the quicker build.)
Minor obvious cleanups creep in with this patch, I will not bother to name them
individually now unless code review asks me to.
Rationale:
1) libbsc has been separate to use it for osmo-nitb and osmo-bsc in the old
openbsc.git. This is no longer required, and spreading over libbsc and osmo-bsc
is distracting.
2) Recently, ridiculous linking requirements have made adding new functions
cumbersome, because libbsc has started depending on osmo-bsc/*.c
implementations: on gscon FSM and bssap functions. For example, neither
bs11_config nor ipaccess-config nor bts_test need handover_cfg or BSSMAP
message composition. It makes no sense to link the entire osmo-bsc to it, nor
do we want to keep adding stubs to each linking realm.
Change-Id: I36a586726f5818121abe54d25654819fc451d3bf
Fix various sanitizer complaints about memory leaks using a sanitizer build
with gcc (Debian 7.3.0-12) 7.3.0.
Also fix deprecation warnings on osmo_init_logging().
Depends: I216837780e9405fdaec8059c63d10699c695b360 (libosmocore)
Change-Id: I970c6f8a0e36a8b63e42349dbc92baff649e5cef
The nanobts related tool ipaccess-config is currently not built due
to dependancy issues added by GSCON FSM.
- Re-Add ipacces-config to makefile.am
- Add dependencies and stubs
Change-Id: I1d0a45bed61b45352ed305b6b1fd8d9b3d3cecae
Related: OS#2823
Preceding commit I38ac98a4d25159cfd4f686efbfbaf8f00625a6d8 changed the
ipac_bcch_info.cgi type to osmo_cell_global_id, but did not carry out
corresponding changes in ipaccess/network_listen.c.
The reason this was not caught is that recent commit
I68286d26e2014048b054f39ef29c35fef420cc97 adding the new gscon FSM actually
disables ipaccess-config in the build.
Fix the build, given that ipaccess-config were re-enabled.
Change-Id: I15cd58e8ba0563ce4e42a61e79d01394b61593dd
Print a clear error when the format in not correct. I was in the
situation several times in which I was passing "123" instead of
"123/0/0", and spent a while seeing what was wrong.
Change-Id: I70906939b3320473c56a87929c4886aac9d7d064
Interestingly, SO_BINDTODEVICE used to bind to a specific iface
requires root permissions. However, the same target can be accomplished
by binding to a local IP addr set on the target interface, which doesn't
require root permissions in this case.
Change-Id: Ie123c45005d68b186cb06538f7bd31f3b2513007
In the current implementation of osmo-bsc, the subscriber connection is
not handled (very) statefully. However, there is some state keeping in the
code that handles the mgcp connection, but there are still to much loose ends
which allow odd situations to happen, which then lead severe error situations
(see also closes tags at the end) This commit adds a number of improvements
to fix those problems.
- Use an osmo-fsm to control the gsm_subscriber_connection state and
make sure that certain operations can only take place at certain states
(e.g let connection oriented SCCP traffic only pass when an SCCP connection
actually exists.
Remove the old osmo_bsc_mgcp.c code. Use the recently developed MGCP client
FSM to handle the MGCP connections.
Also make sure that stuff that already works does not break. This in
particular refers to the internal handover capability and the respective
unit-tests.
See also OS#2823, OS#2768 and OS#2898
- Fix logic to permit assignment to a signalling channel. (OS#2762)
- Introduce T993210 to release lchan + subscr_conn if MSC fails to respond
The GSM specs don't have an explicit timer for this, so let's introdcue
a custom timer (hence starting with 99).
This timeout catches the following situation:
* we send a SCCP CR with COMPL_L3_INFO from the MS to the MSC,
* the MSC doesn't respond (e.g. SCCP routing failure, program down, ...)
The MS is supposed to timeout with T3210, 3220 or 3230. But the BSC
shouldn't trust the MS but have some timer on its own.
SCCP would have a timer T(conn est), but that one is specified to be
1-2min and hence rather long.
See also: OS#2775
- Terminate bsc_subscr_conn_fsm on SCCP N-DISC.ind from MSC
If the MSC is disconnecting the SCCP channel, we must terminate the FSM
which in turn will release all lchan's and other state.
This makes TC_chan_rel_hard_rlsd pass, see also OS#2731
As a side-effect, this fixes TC_chan_act_ack_est_ind_refused(),
where the MSC is answering with CREF to our CR/COMPL_L3.
- Release subscriber connection on RLL RELEASE IND of SAPI0 on main DCCH
The subscriber connection isn't really useful for anything after the
SAPI0 main signalling link has been released. We could try to
re-establish, but our best option is probably simply releasing the
subscriber_conn and anything related to it.
This will make TC_chan_rel_rll_rel_ind pass, see also OS#2730
This commit has been tested using the BSC_Tests TTCN3 testsuit and the
following tests were passed:
TC_chan_act_noreply
TC_chan_act_ack_noest
TC_chan_act_ack_est_ind_noreply
TC_chan_act_ack_est_ind_refused
TC_chan_act_nack
TC_chan_exhaustion
TC_ctrl
TC_chan_rel_conn_fail
TC_chan_rel_hard_clear
TC_chan_rel_hard_rlsd
TC_chan_rel_a_reset
TC_rll_est_ind_inact_lchan
TC_rll_est_ind_inval_sapi1
TC_rll_est_ind_inval_sapi3
TC_rll_est_ind_inval_sacch
TC_assignment_cic_only
TC_assignment_csd
TC_assignment_ctm
TC_assignment_fr_a5_0
TC_assignment_fr_a5_1_codec_missing
TC_assignment_fr_a5_1
TC_assignment_fr_a5_3
TC_assignment_fr_a5_4
TC_paging_imsi_nochan
TC_paging_tmsi_nochan
TC_paging_tmsi_any
TC_paging_tmsi_sdcch
TC_paging_tmsi_tch_f
TC_paging_tmsi_tch_hf
TC_paging_imsi_nochan_cgi
TC_paging_imsi_nochan_lac_ci
TC_paging_imsi_nochan_ci
TC_paging_imsi_nochan_lai
TC_paging_imsi_nochan_lac
TC_paging_imsi_nochan_all
TC_paging_imsi_nochan_plmn_lac_rnc
TC_paging_imsi_nochan_rnc
TC_paging_imsi_nochan_lac_rnc
TC_paging_imsi_nochan_lacs
TC_paging_imsi_nochan_lacs_empty
TC_paging_imsi_a_reset
TC_paging_counter
TC_rsl_drop_counter
TC_classmark
TC_unsol_ass_fail
TC_unsol_ass_compl
TC_unsol_ho_fail
TC_err_82_short_msg
TC_ho_int
Authors:
Harald Welte <laforge@gnumonks.org>
Philipp Maier <pmaier@sysmocom.de>
Neels Hofmeyr <neels@hofmeyr.de>
Closes: OS#2730
Closes: OS#2731
Closes: OS#2762
Closes: OS#2768
Closes: OS#2775
Closes: OS#2823
Closes: OS#2898
Closes: OS#2936
Change-Id: I68286d26e2014048b054f39ef29c35fef420cc97
Check exact number of parameters to avoid explicit void params ("") to
be used as BTS IP by an incorrect caller.
Exit successfully if firmware analysis is requested and there's no BTS
IP provided (meaning no BTS set up is required).
Save BTS IP into bts_ip variable as using optind is tricky.
Use new bts_ip variable to print the IP of the BTS we are trying to
connect to.
Change-Id: I8071aaf2be217207261ad698f87344f7ca15ccc4
log_parse_category_mask is preventing errors from being printed, which
makes debugging issues with the application harder.
Change-Id: I69ee2de921979f8bfaa8b501c6b05db1717b0c36
This format outputs json format which can be more easily parsed if
launched by scripting launguage with json support like python.
Change-Id: Ib2d461c79fbc242141dc342578467c3e9c6ed5fc
If list-view is not enabled, then a line with the new BTS is printed to
stdout buffer. That's fine if stdout goes to the terminal, since it's
line buffered, but if abisip-find write to a pite or to a file, then the
buffer won't be flushed until a full page is full, which may take a
while, and produce delays in scripts using abisip-find.
Change-Id: I19f8c7f747fa7a130a436e5e07a8648932404bf0
When the BTS answers, it uses the src addr used by abisip-find to send
the boardcast packets. This way a different IP than the one
automatically specified by default routing can be used.
An extra benefit: more than one abisip-find process can now be run in
parallel on the same interface.
Change-Id: I6b805f22d261003239d7002d9e568ea4797a2b0b
All callers pass mcc=1, mnc=1, so just have it as default.
(Prepare for net->country_code etc to be replaced by net->plmn)
Change-Id: Ic16bc0bab3f2d4721e86a1a04f9d9f988d777df2
Move gsm_data.c and handover_cfg.c to libbsc, where they belong.
This leaves libcommon utterly empty, drop it.
Change-Id: I6178061fa30c7e1a4c22c29d3c8f508b1033569f
Curiously, ipaccess-proxy.c is able to define its own tall_bsc_ctx even though
the same should already be linked from gsm_data.c. Declare it extern instead
and hence use the one from gsm_data.c.
A linking error actually occured as soon as I joined gsm_data_shared.c into
gsm_data.c, which is how my attention was drawn to this. I assume that linking
didn't necessarily pull in gsm_data.c before and a separate tall_bsc_ctx was
permitted. As soon as the next commit merges those files
(Ie247bc492efb331871d970c56700595ad3f7e201), it becomes impossible to define a
second tall_bsc_ctx in ipaccess-proxy.c.
Change-Id: I9c9c8540419876696e65a690717144d497d60fb2
Interestingly enough, talloc_ctx_init() actually had not a single caller.
While dropping it, see to it that the few contexts that are actually used in
osmo-bsc.git are indeed initialized in all the main scopes.
Also initialize two void* ctxts as NULL explicitly, to allocate under the NULL
context in case some main scope forgets to branch it off another root context.
(That's bsc, fle and paging, all others actually come in from other libraries.)
Change-Id: I344a3d07e146999e154824837ed95db2b9879356
Replace calls to make_sock() with osmo_sock_init_ofd().
Shame on me for not testing every single one in practice, I hope for peer
review to confirm that this should be correct... Read closely please!
The IPPROTO_GRE define seems to be unused (at least in osmo-bsc.git), drop it
completely.
Change-Id: Ia6e4e0e1eed3328fa25b3b90be376d532ad0e56b
Provide concise log categories for each main scope.
Move the complete log categories 1:1 to osmo_bsc_main.c.
In bsc_nat.c, omit obviously unused log categories.
In tests, omit almost all log categories, except for those explicitly tested as
the expected output.
Note: should any logging occur for a log category that is omitted by accident,
such will end up being logged as DLGLOBAL, so it will show up and we can fix
it, and it will not get lost silently.
Change-Id: Ib524e49ec211662e0dfde8161495a72aa8ad76cf
The code triggers following error:
abisip-find.c:317:3: error: format not a string literal and no format
arguments [-Werror=format-security]
The error was introduced in 5bf1e15c55.
Change-Id: I613781495edbc53916ca70ff7b78d28ffabd3f5d
To get an overview of what base stations are present in a network, particularly
with many base stations being present, it is particularly useful to get a list
of connected base stations instead of just output of received replies.
Keep a sorted list of known base stations, which time out after 10 seconds.
Print additions and removals, and total amount of replies received. On each
change, print the entire list.
Output a running total of replies received, to provide comfort to the reader
that something is still happening, and to confirm that the shown listing is
still up-to-date (updated on the same line by means of '\r').
It looks like:
----- Mon Dec 25 18:59:43 2017
0: MAC_Address='00:02:95:07:dc:bd' IP_Address='192.168.0.124' Unit_ID='1/1/1' Location_1='Unknown' Location_2='3GAP' Equipment_Version='237B015_C' Software_Version='unknown' Unit_Name='Unknown' Serial_Number='000295-0000152614'
1: MAC_Address='00:02:95:07:dd:57' IP_Address='192.168.0.15' Unit_ID='1/1/1' Location_1='Unknown' Location_2='3GAP' Equipment_Version='237B015_C' Software_Version='unknown' Unit_Name='Unknown' Serial_Number='000295-0000154153'
Total: 2
RX: 11
----- Mon Dec 25 19:00:12 2017
LOST:
MAC_Address='00:02:95:07:dd:57' IP_Address='192.168.0.15' Unit_ID='1/1/1' Location_1='Unknown' Location_2='3GAP' Equipment_Version='237B015_C' Software_Version='unknown' Unit_Name='Unknown' Serial_Number='000295-0000154153'
----- Mon Dec 25 19:00:12 2017
0: MAC_Address='00:02:95:07:dc:bd' IP_Address='192.168.0.124' Unit_ID='1/1/1' Location_1='Unknown' Location_2='3GAP' Equipment_Version='237B015_C' Software_Version='unknown' Unit_Name='Unknown' Serial_Number='000295-0000152614'
Total: 1
RX: 15
----- Mon Dec 25 19:00:28 2017
New:
MAC_Address='00:02:95:07:dd:57' IP_Address='192.168.0.15' Unit_ID='1/1/1' Location_1='Unknown' Location_2='3GAP' Equipment_Version='237B015_C' Software_Version='unknown' Unit_Name='Unknown' Serial_Number='000295-0000154153'
----- Mon Dec 25 19:00:28 2017
0: MAC_Address='00:02:95:07:dc:bd' IP_Address='192.168.0.124' Unit_ID='1/1/1' Location_1='Unknown' Location_2='3GAP' Equipment_Version='237B015_C' Software_Version='unknown' Unit_Name='Unknown' Serial_Number='000295-0000152614'
1: MAC_Address='00:02:95:07:dd:57' IP_Address='192.168.0.15' Unit_ID='1/1/1' Location_1='Unknown' Location_2='3GAP' Equipment_Version='237B015_C' Software_Version='unknown' Unit_Name='Unknown' Serial_Number='000295-0000154153'
RX: 18
Change-Id: I4201876431029b303dbd10e46492228379c9782a
Subsequent patch I4201876431029b303dbd10e46492228379c9782a will add the -l
cmdline option. Add getopt in a separate step here to keep the patch lean.
Change-Id: Idba1a89753510fe6d409277b20c2db86c1b8f7f8
There still is a lot of dead code that we inherited from the NITB
days, let's remove more of it.
libtrau will be re-introduced as part of osmo-mgw later.
Change-Id: I8e0af56a158f25a4f1384d667c03eb20e72df5b8
This is the first step in creating this repository from the legacy openbsc.git.
Like all other Osmocom repositories, keep the autoconf and automake files in
the repository root. openbsc.git has been the sole exception, which ends now.
Change-Id: I9c6f2a448d9cb1cc088cf1cf6918b69d7e69b4e7
Harald Welte
Neels Hofmeyr
Philipp Maier
Pau Espin