| Commit message (Collapse) | Author | Age | Files | Lines |
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The function gsm0808_sc_cfg_from_gsm48_mr_cfg() takes an S15 to S0
bitmask and converts that bitmask into an AMR multirate configuration
struct.
Unfortunately the current implementation implements 3GPP TS 28.062,
Table 7.11.3.1.3-2 wrongly in some aspects. Lets fix this.
- Fix wrong interpretation of the bitpatterns
- 5,15K is invalid and must never be selected
- Make sure that no more than 4 rates are selected in the active set
- Extend unit-test
Change-Id: I6fd7f4073b84093742c322752f2fd878d1071e15
Related: SYS#4470
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CGI to Cell ID: for example, for Paging, osmo-msc has a CGI for a subscriber
and needs to send out a Cell Identifier IE. Makes sense to add this conversion
here.
Cell ID to CGI: for a Layer 3 Complete, a subscriber sends the current cell in
the form of a Cell Identifier, which we store as a CGI, if necessary enriched
with the local PLMN.
Add enum with bitmask values to identify parts of a CGI, for the return value
of gsm0808_cell_id_to_cgi(). Can't use enum CELL_IDENT for that, because it
doesn't have a value for just a PLMN (and is not a bitmask).
Change-Id: Ib9af67b100c4583342a2103669732dab2e577b04
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During FSM design for osmo-msc, I noticed that the current behavior that
keep_timer=true doesn't guarantee a running timer can make FSM design a bit
complex, especially when using osmo_tdef for timeout definitions.
A desirable keep_timer=true behavior is one that keeps the previous timer
running, but starts a timer if no timer is running yet.
The simplest example is: a given state repeatedly transitions back to itself,
but wants to set a timeout only on first entering, avoiding to restart the
timeout on re-entering.
Another example is a repeated transition between two or more states, where the
first time we enter this group a timeout should start, but it should not
restart from scratch on every transition.
When using osmo_tdef timeout definitions for this, so far separate meaningless
states have to be introduced that merely set a fixed timeout.
To simplify, add osmo_fsm_inst_state_chg_keep_or_start_timer(), and use this in
osmo_tdef_fsm_inst_state_chg() when both keep_timer == true *and* T != 0.
In tdef_test.ok, the changes show that on first entering state L, the previous
T=1 is now kept with a large remaining timeout. When entering state L from O,
where no timer was running, this time L's T123 is started.
Change-Id: Id647511a4b18e0c4de0e66fb1f35dc9adb9177db
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Always call osmo_tdef_fsm_inst_state_chg(), also when no timeout is defined.
When there is no timeout defined for a state, tdef_test.c tries to be smart and
print different output. In that mess, I missed the fact that
osmo_tdef_fsm_inst_state_chg() isn't always called as it should. In the same
mess, the resulting state was never printed until the preceding patch, which
helped to hide this bug.
Change-Id: I1d953d99854422bff8eb32f051e9c6147bc836b6
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- Always print the state after a state transition.
This shows that actually state transitions are missing for states that have
no timer defined. This is a bug in tdef_test.c, to be fixed subsequently.
- Instead of total time passed since start, print the individual fake time
intervals. Omit initial useless zero fake time advance.
- Add two more state transitions, back out from and into a state that has no
timeout set.
Change-Id: Icb31af96d37741e256ff07868f3d4f5c48cdda74
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fi->T values are int, i.e. can be negative. Do not log them as unsigned, but
define a distinct timer class "Xnnnn" for negative T values: i.e. for T == -1,
print "Timeout of X1" instead of "Timeout of T4294967295".
The negative T timer number space is useful to distinguish freely invented
timers from proper 3GPP defined T numbers. So far I was using numbers like
T993210 or T9999 for invented T, but X1, X2 etc. is a better solution. This way
we can make sure to not accidentally define an invented timer number that
actually collides with a proper 3GPP specified timer number that the author was
not aware of at the time of writing.
Add OSMO_T_FMT and OSMO_T_FMT_ARGS() macros as standardized timer number print
format. Use that in fsm.c, tdef_vty.c, and adjust vty tests accordingly.
Mention the two timer classes in various API docs and VTY online-docs.
Change-Id: I3a59457623da9309fbbda235fe18fadd1636bff6
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Change-Id: Ide94558d1c31356483252b83e04b061b4ee4d3bf
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Check return value of RACH encode/decode functions and fail test on
unexpected results.
Change-Id: I41bfa808e3c064a11152e7ce8ee77a01d38a0744
Related: OS#1854
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Change-Id: Ic2652c7e4ffe1e707022168ac6c0da7c88ae7f45
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Add a flag that adds timeout info to osmo_fsm_inst state change logging.
To not affect unit testing, make this an opt-in feature that is disabled by
default -- mostly because osmo_fsm_inst_state_chg_keep_timer() will produce
non-deterministic logging depending on timing (logs remaining time).
Unit tests that don't verify log output and those that use fake time may also
enable this feature. Do so in fsm_test.c.
The idea is that in due course we will add osmo_fsm_log_timeouts(true) calls to
all of our production applications' main() initialization.
Change-Id: I089b81021a1a4ada1205261470da032b82d57872
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The NS implementation part of the Gb implementation libosmogb
so far implemented a rather classic dialect of Gb, with lots of
heritage to FR (Frame Relay) transports. At least since Release 6
of the NS specification, there's an IP Sub-Network Service (SNS),
which
* permits for dynamic configuration of IP endpoints and their NS-VCs
* abandons the concept of a NSVCI on IP transport
* forbids the use of RESET/BLOCK/UNBLOCK procedures on IP transport
This commit introduces BSS-side IP-SNS support to libosmogb in a
minimally invasive way. It adds a corresponding SNS FSM to each NS
instance, and implements the new SIZE/CONFIG/ADD/DELETE/CHANGE_WEIGHT
procedures very closely aligned with the spec.
In order to use the SNS flavor (rather than the classic one),
a BSS implementation should use gprs_ns_nsip_connect_sns() instead
of the existing gprs_ns_nsip_connect().
This implementation comes with a set of TTCN-3 tests in
PCU_Tests_RAW_SNS.ttcn, see Change-ID
I0fe3d4579960bab0494c294ec7ab8032feed4fb2 of osmo-ttcn3-hacks.git
Closes: OS#3372
Closes: OS#3617
Change-Id: I84786c3b43a8ae34ef3b3ba84b33c90042d234ea
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This function performs sending a NS-ALIVE PDU and starting Tns-Test,
let's use it in all places where we used to do that.
As part of this, also fix a bug where the sendto() return value (number
of bytes sent) would actually propagate up all the way to
gprs_ns_rx_reset() return value, which in turn affects the test results
on stdout.
Change-Id: I4d303117f77fabb74bbb91887b9914a81c2a084a
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Modern NS specifications contain a SNS (Sub Network Service) for
negotiating IP/port/weight parameters of NS-over-IP links dynamically.
This patch adds message encoding routines for SNS-CONFIG, SNS-SIZE
and their respective acknowledgements.
Related: OS#3372
Change-Id: I5c47e1c3c10deb89a7470ee2c03adfc174accc93
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It should be large enough to prepend a struct osmo_scu_prim to pass down an
SCCP stack (see libosmo-sccp). 264 should suffice, but pick the next larger
power-of-two instead.
In osmo-msc, I would like to prepend an osmo_prim to the msgb created by
gsm0808 API, but turns out the headroom is too small:
msgb(0x61700001b660): Not enough headroom msgb_push (126 < 264)
Instead of always copying a msgb that has just that instant been created, it
makes more sense to allocate sufficient headroom in the first place.
Change-Id: I95729991eb49555f8bba60c5dc916131b03b6cf2
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Add functions to dump LCLS (without GCR) and GCR. Dumping entire struct
results in inconveniently long string hence the separate functions. Both
use talloc functions so they expect caller to take care of providing
proper allocation context and freeing memory.
Change-Id: Ic3609224c8f3282d667e75f68bc20327e36eb9e6
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Change-Id: I4144506feee74a8219bd3736087c30cc6323ec1d
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When I added the definitions for the IP-SNS in commit
f030b210e8c13314d361a6b721a0cbcc72935219 back in 2010, I forgot to update
the string definitions in ns_cause_str[]. Let's fix that
Change-Id: I419ccc482d99b01263a60aede83dacd2d9de56ab
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Change-Id: I9209ee4ba5ebfc4f96b4c1d42840e1906455bae7
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That's pretty straightforward and convenient extention: handle all
extra positional arguments as patch file names. This makes it similar to
'cp' and other coreutils basic tools. For example:
osmo-config-merge base.cfg patch1.cfg patch2.cfg patch3.cfg
will apply 3 patches to the base config file.
Change-Id: I212cbdc3bf6f251c1a3175737ac74242fb004c6d
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Make sure to clear any log context before processing the next incoming message
as part of some file descriptor callback. This effectively prevents "context
leaking" from processing of one message into processing of the next message as part
of one iteration through the list of file descriptors here.
Change-Id: I3644c7bc1a9cec5858eb0faf94efc8c3ba7f5d8d
Closes: OS#3813
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According to Section 9.2.4 of 3GPP TS 48.016, the NS-BLOCK-ACK PDU has a
mandatory NSVCI IE which we so far were missing.
Change-Id: Ie7205e99d57f1e42d941f1be2460d8c9f46aadfe
Closes: OS#3808
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The symbols for those functions were always exported, but we
somehow didn't declare them in gprs_ns.h
Change-Id: Ib073e9c93fcdf408b63000182e90aabce37f687e
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Change-Id: Ic19f65bdc5527ad5a69d0a92320ce5f672bf4d2b
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If we use gprs_ns_tx_alive() we will get logging for free.
Change-Id: I53d410d13540d389096c40425e1fa2eb7460b16b
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We're transmitting a BVC-UNBLOCK but the log states the opposite:
BVC-BLOCK. Let's fix that.
Change-Id: I70fa7336402d193513f89fcf3068b0b21925702d
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During log review lack of support for PDCH was spotted:
scheduler.c:593 Configuring multiframe with PDCH trx=0 ts=4
rsl.c:1159 (bts=0,trx=0,ts=4,ss=0): chan_nr=UNKNOWN on TS4 type=0x00 mode=SIGNALLING
rsl.c:741 (bts=0,trx=0,ts=4,pchan=TCH/F_TCH/H_PDCH as PDCH) (ss=0) PDTCH Tx CHAN ACT ACK
Wireshark shows:
1100 0... = C-bits: PDCH (24)
.... .100 = Time slot number (TN): 4
Change-Id: If6ed96c9eb0431eb24e2135634def61e0ea506ea
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Change-Id: Ie3f34b78edc91a013152742bebbd839586a787fe
Related: OS#3805
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This single function has a quite different behavior than the other
gsm0808_ functions in terms of how the resulting msgb l3h
pointers are set. Let's document that to avoid more confusion.
Change-Id: I0367760a588fc968c5a2dea46001ef1ee7965c8c
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In Change-Id Id8a75e1da2d5f520064666e4ee413d1c91da6ae3 we recently
introduced adding the "CSFB INDICATOR" IE to the CLEAR COMMAND,
but we did so with a wrong length value.
Change-Id: I4d07d25fb03ca0f89fd7b94226c54309c77a010a
Closes: OS#3805
Related: OS#2778
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We are using macros like this or different workarounds in libmsc. In the course
of implementing inter-MSC handover, I am encountering yet another such
situation of appending multiple strings to a limited char buffer. Standardize.
Add a unit test to utils_test.c.
Change-Id: I2497514e26c5e7a5d88985fc7e58343be1a027b2
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This is from TS 08.08 3.2.2.11 directly. The choices for Data mode
and Speech mode were already present, but not for Signalling mode
Change-Id: I9e24841ea877a9a78dc4d2bd14cbf60c4bea79a6
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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When the initial patch was tweaked from osmo_classmark_* to
osmo_gsm48_classmark_* naming, the libosmogsm.map entries were forgotten to be
changed as well.
Change-Id: I53a41b5e965a529d3c146ee85102f7f1725c6014
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get_value_string() conveniently prints the value number to a static buffer if
it is unknown in a value_string array. Do the same if the value_string array
pointer itself is NULL.
If a value string array is user supplied and might be NULL, one could add a
separate NULL check around it; but by making get_value_string() itself guard
against NULL, another static char buffer to print the value number is avoided.
Change-Id: Ie640e9258a959da8f4f9089478de993509853997
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It's defined in logging.h for quite some time but is not actually
enabled alongside with other internal logging categories.
Change-Id: I0e7a2add6293a072752900608c8ba34cc3850f31
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In OsmoMSC, it's required to be able to specify a particular GSM 04.07
transaction ID for GSM 04.80 Release complete message instead of the
hard-coded value, that is used gsm0480_create_ussd_release_complete().
Let's finally deprecate gsm0480_create_ussd_release_complete(), and
introduce a new function without USSD prefix, as this message
is also used in other "structured" supplementary services.
Change-Id: Ie3ac85fcef90a5e532334ba3482804d5305c88d7
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Change-Id: Id4350dee4353ebf9de0450dd5dab6e4f2ee7c3a6
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
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Run INT_MAX and ULONG_MAX related tests only manually, remove from automatic
testing. This will hopefully fix recent build failures on various platforms.
Add a 64 bit output example for expected results when invoking
`./tdef_test range'. This is not checked automatically and merely serves for
manual reference.
For vty tests, use 32bit max values instead of INT_MAX and ULONG_MAX.
Change-Id: I6242243bde1d7ddebb858512a1f0b07f4ec3e5c2
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When a call that was established in a CSFB context ends the CLEAR
COMMAND that is send from the BSC to the MSC should contain a CSFB
indication IE, which consists of just the IE byte itsslef. This
additional IE tells the BSC to include other CSFB related IEs into the
RR Release message.
Change-Id: Id8a75e1da2d5f520064666e4ee413d1c91da6ae3
Related: OS#3778
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This is similar to msgb_tailroom(): It returns the amount of space
left at the end of the bit vector (compared to the current cursor).
The function returns the number of bits left in the bitvec.
Change-Id: I8980a6b6d1973b67a2d9ad411c878d956fb428d1
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This new bitvec API function returns the number of bytes used in a given
bit-vector.
Change-Id: Id4bd7f7543f5b0f4f6f876e283bd065039c37646
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Change-Id: If3649606ba7c25121e30ed02939ca08c94665be5
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These are some IEI definitions that we'll need for CSFB Fast Return
Change-Id: I0e101af316438b56d63d43fc2cb16d7caf563d07
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Move T_def from osmo-bsc to libosmocore as osmo_tdef. Adjust naming to be more
consistent. Upgrade to first class API:
- add timer grouping
- add generic vty support
- add mising API doc
- add C test
- add VTY transcript tests, also as examples for using the API
From osmo_fsm_inst_state_chg() API doc, cross reference to osmo_tdef API.
The root reason for moving to libosmocore is that I want to use the
mgw_endpoint_fsm in osmo-msc for inter-MSC handover, and hence want to move the
FSM to libosmo-mgcp-client. This FSM uses the T_def from osmo-bsc. Though the
mgw_endpoint_fsm's use of T_def is minimal, I intend to use the osmo_tdef API
in osmo-msc (and probably elsewhere) as well. libosmocore is the most sensible
place for this.
osmo_tdef provides:
- a list of Tnnnn (GSM) timers with description, unit and default value.
- vty UI to allow users to configure non-default timeouts.
- API to tie T timers to osmo_fsm states and set them on state transitions.
- a few standard units (minute, second, millisecond) as well as a custom unit
(which relies on the timer's human readable description to indicate the
meaning of the value).
- conversion for standard units: for example, some GSM timers are defined in
minutes, while our FSM definitions need timeouts in seconds. Conversion is
for convenience only and can be easily avoided via the custom unit.
By keeping separate osmo_tdef arrays, several groups of timers can be kept
separately. The VTY tests in tests/tdef/ showcase different schemes:
- tests/vty/tdef_vty_test_config_root.c:
Keep several timer definitions in separately named groups: showcase the
osmo_tdef_vty_groups*() API. Each timer group exists exactly once.
- tests/vty/tdef_vty_test_config_subnode.c:
Keep a single list of timers without separate grouping.
Put this list on a specific subnode below the CONFIG_NODE.
There could be several separate subnodes with timers like this, i.e.
continuing from this example, sets timers could be separated by placing
timers in specific config subnodes instead of using the global group name.
- tests/vty/tdef_vty_test_dynamic.c:
Dynamically allocate timer definitions per each new created object.
Thus there can be an arbitrary number of independent timer definitions, one
per allocated object.
T_def was introduced during the recent osmo-bsc refactoring for inter-BSC
handover, and has proven useful:
- without osmo_tdef, each invocation of osmo_fsm_inst_state_chg() needs to be
programmed with the right timeout value, for all code paths that invoke this
state change. It is a likely source of errors to get one of them wrong. By
defining a T timer exactly for an FSM state, the caller can merely invoke the
state change and trust on the original state definition to apply the correct
timeout.
- it is helpful to have a standardized config file UI to provide user
configurable timeouts, instead of inventing new VTY commands for each
separate application of T timer numbers.
Change-Id: Ibd6b1ed7f1bd6e1f2e0fde53352055a4468f23e5
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Even if ./configure --disable-doxygen was passed and doxygen builds are by
default skipped, provide a manual 'make apidoc' target that nevertheless
generates the API doc on the premise that a 'doxygen' program is available.
Especially since we do a two-pass doxygen build whenever any source file
changes, my guess is --disable-doxygen could be a common choice. It is then
cumbersome to have to ./configure just to get one doxygen build started.
Change-Id: If8d8dfb8365c8f28612b8ce2b8ddf88f74df9a90
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So far, when modifying a source file, the doxygen docs were not regenerated
automatically. It required a manual 'rm -rf docs/core' or similar. Make it
rebuild automatically:
Add each library's source files to the list of dependencies for the first-pass
doxygen build.
Attention, since all libraries depend on the .map files of each other library,
and each library depends on its own source files, that means that a single
touch on one .c file anywhere will result in rebuilding the entire doxygen
docs. It is correct to do so, since any file may introduce \ref targets used
anywhere else. If you don't want that, --disable-doxygen.
Change-Id: I15ea96be6e7abe91264b91f0b06963a0f2d63b0b
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doxygen \ref cross-references to groups or files from other libraries only work
when the .map file was present when the HTML was generated, and when that .map
file was listed in TAGFILES in the Doxyfile.
- Makefile.am: introduce a two-pass build for doxygen API docs.
- First build pass makes sure the .tag files are present.
- Second build pass picks up all the references, hence generates hyperlinks
properly.
- Add all libraries to TAGFILES of all other libraries, so we can from now on
freely criss-cross reference from everywhere to everywhere.
- Add all libraries' tag files as dependencies for all others.
Example: in upcoming tdef.h, I would like to cross reference to tdef_vty.h, and
vice versa, even though they are in libosmocore and libosmovty, respectively.
This is now possible.
We may still need to fix some problems with naming collisions, see for example
stats.h, which exists twice with identical doxygen handle (different source
dirs seems to not suffice for doxygen).
Change-Id: Ib03d0b70d536c8f1386def666c89106a840f7363
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Provide a va_list type vty_out() variant, to be able to pass on variable
arguments from other function signatures to vty_out().
This will be used by Ibd6b1ed7f1bd6e1f2e0fde53352055a4468f23e5 for osmo_tdef.
Change-Id: Ie6e6f11a6b794f3cb686350c1ed678e4d5bbbb75
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