| Commit message (Collapse) | Author | Age | Files | Lines |
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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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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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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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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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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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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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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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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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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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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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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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Remove any special node exiting from the VTY CTRL-C handling.
From a curious VTY transcript test glitch, I noticed weird behavior by the VTY
telnet shell: usually, when the user hits CTRL-C, that means to cancel the
current command line and present a fresh, clean prompt. However, only on the
CONFIG_NODE and CFG_LOG_NODE, a CTRL-C also exits the current node and moves up
by one level. This behavior is unexplainable and makes zero sense.
No other nodes exit on CTRL-C:
- on the ENABLE node, a CTRL-C stays on the ENABLE_NODE and doesn't exit to the
VIEW_NODE.
- any sub-nodes of the CONFIG_NODE stay unchanged, e.g. 'network' or 'bts' /
'trx', etc.
There is no apparent special meaning of CTRL-C on CONFIG_NODE nor CFG_LOG_NODE
to justify this odd choice.
Particularly, the vty transcript tests using osmo_verify_transcript_vty.py rely
on sending CTRL-C to clear the command prompt, so that we can properly test
sending '?' to the VTY during transcripts. In a live session, a '?' prints
available options and then updates the prompt with identical command arguments.
In a transcript test, that doesn't make sense, because each time the transcript
writes out a new command to run. Consider e.g. a transcript test like:
tdef_vty_test(config)# timer ?
tea Tea time
test Test timers
software Typical software development cycle
tdef_vty_test(config)# timer tea ?
[TNNNN] T-number, optionally preceded by 't' or 'T'.
To be able to issue a fresh command after '?', osmo_verify_transcript_vty.py
explicitly sends a CTRL-C to clear the command buffer. Hence there we rely on
predictable behavior of CTRL-C.
More particularly, the upcoming osmo_tdef_vty transcript tests are apparently
the first that want to test '?' behavior on the CONFIG_NODE's root level and
fall on their face, because of the implicit exit that happens only there.
Change-Id: I4f339ba61f1c273fa7da85caf77ba116ae2697b1
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In cmd_complete_command_real(), detect and strip square braces from
multi-choice arguments, to enable tab-completion for commands like
> list
cmd [(alpha|beta)]
> cmd <TAB>
alpha beta
> cmd be<TAB>
> cmd beta
Change-Id: I8c304300b3633bb6e9b3457fcfa42121c8272ac0
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Since very recently we sensibly handle commands like
cmd ([one]|[two]|[three])
as optional multi-choice arguments. In addition, support the more obvious
syntax of
cmd [(one|two|three)]
Internally, the tokens are mangled to [one] [two] and [three], which is how the
rest of the code detects optional args, and makes sense in terms of UI:
> cmd ?
[one]
[two]
[three]
(i.e. optional arguments are always shown in braces in '?' listings)
Before this patch, commands defined with a syntax like [(one|two)], would lead
to an assertion (shows as "multiple") during program startup.
Change-Id: I952b3c00f97e2447f2308b0ec6f5f1714692b5b2
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Add basic optional multi-choice argument support.
The VTY detects optional arguments by square braces.
> cmd ?
[optional-arg]
> cmd optional-arg
ok
> cmd
ok
However, within multi-choice args, these braces were so far not treated as
optional:
> list
cmd2 ([one]|[two]|[three])
> cmd2
% Command incomplete
In preparation for I952b3c00f97e2447f2308b0ec6f5f1714692b5b2 which will enable
the more obvious syntax of
cmd [(one|two)]
for reasons of internal implementation, first support a syntax of
cmd ([one]|[two])
The internal vty implementation always needs square braces around each option.
There is currently no good way to prevent developers from defining braces
inside multi-arguments, so it is easiest to allow and handle them:
> list
cmd2 ([one]|[two]|[three])
> cmd2
ok
The VTY doesn't guard against a mix like
cmd (one|[two])
With this patch, a multi-choice command is treated as optional iff the first
element is in square brackets. The remaining elements' square brackets have no
effect besides confusing the user. This is not explicitly checked against.
In general, I would prefer to check all of these details, but the current VTY
code with its endless code duplication and obscure string mangling just doesn't
provide that luxury. There are numerous worse errors hidden in there.
Change-Id: I9a8474bd89ddc2155c58bfca7bd038d586aaa60a
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Replace osmo_gsup_get_err_msg_type() with a wrapper to
OSMO_GSUP_TO_MSGT_ERROR(). This macro assumes, that all error messages
are (request message | 0x000001). Add a big comment header for
osmo_gsup_message_type, describing this already implicitly followed rule
and therefore making it explicit.
With this change, we don't need to maintain the request -> error message
mapping in osmo_gsup_get_err_msg_type() anymore.
Related: Iec1b4ce4b7d8eb157406f006e1c4241e8fba2cd6 (osmo-gsm-manuals)
Change-Id: I46d9f2327791978710e2f90b4d28a3761d723d8f
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During testing of the upcoming tdef API, it became apparent that passing very
large timeout values to osmo_fsm_inst_state_chg() wraps back in the number
range, and might actually result in effectively very short timeouts instead.
Since time_t's range is not well defined across platforms, use a reasonable
maximum value of signed 32 bit integer. Hence this will be safe at least on
systems with an int32_t for struct timeval.tv_sec and larger.
Clamp the osmo_fsm_inst_state_chg() timeout_secs argument to a maximum of
0x7fffffff, which amounts to just above 68 years:
float(0x7fffffff) / (60. * 60 * 24 * 365.25) = 68.04965038532715
(In upcoming patch Ibd6b1ed7f1bd6e1f2e0fde53352055a4468f23e5, this can be
verified to work by invoking tdef_test manually with a cmdline argument passed
to enable the range check.)
Change-Id: I35ec4654467b1d6040c8aa215049766089e5e64a
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Before this patch, if timeout_secs == 0 was passed to
osmo_fsm_inst_state_chg(), the previous T value remained set in the
osmo_fsm_inst->T.
For example:
osmo_fsm_inst_state_chg(fi, ST_X, 23, 42);
// timer == 23 seconds; fi->T == 42
osmo_fsm_inst_state_chg(fi, ST_Y, 0, 0);
// no timer; fi->T == 42!
Instead, always set to the T value passed to osmo_fsm_inst_state_chg().
Adjust osmo_fsm_inst_state_chg() API doc; need to rephrase to accurately
describe the otherwise unchanged behaviour independently from T.
Verify in fsm_test.c.
Rationale: it is confusing to have a T number remaining from some past state,
especially since the user explicitly passed a T number to
osmo_fsm_inst_state_chg(). (Usually we are passing timeout_secs=0, T=0).
I first thought this behavior was introduced with
osmo_fsm_inst_state_chg_keep_timer(), but in fact osmo_fsm_inst_state_chg()
behaved this way from the start.
This shows up in the C test for the upcoming tdef API, where the test result
printout was showing some past T value sticking around after FSM state
transitions. After this patch, there will be no such confusion.
Change-Id: I65c7c262674a1bc5f37faeca6aa0320ab0174f3c
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osmo-bsc and osmo-msc implement identical Classmark structures. It makes sense
to define once near the gsm48 protocol definitions.
Also move along some generic Classmark API from osmo-msc.
Change-Id: Ifd27bab0380f7ad0c44c719aa6c8bd62cf7b034c
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Add osmo_hexdump_buf() as an all-purpose hexdump function, which all other
osmo_hexdump_*() implementations now call. It absorbs the static
_osmo_hexdump(). Add tests for osmo_hexdump_buf().
Rationale: recently during patch review, a situation came up where two hexdumps
in a single printf would have been useful. Now I've faced a similar situation
again, in ongoing development. So I decided it is time to provide this API.
The traditional osmo_hexdump() API returns a non-const char*, which should
probably have been a const instead. Particularly this new function may return a
string constant "" if the buf is NULL or empty, so return const char*. That is
why the older implementations calling osmo_hexdump_buf() separately return the
buffer instead of the const return value directly.
Change-Id: I590595567b218b24e53c9eb1fd8736c0324d371d
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Add
* osmo_lai_cmp() (to use in gsm0808_cell_id_u_matches())
* osmo_cgi_cmp() (to use in gsm0808_cell_id_u_matches())
* gsm0808_cell_id_u_match() (to re-use for single IDs and lists)
* gsm0808_cell_ids_match()
* gsm0808_cell_id_matches_list()
* Unit tests in gsm0808_test.c
Rationale:
For inter-BSC handover, it is interesting to find matches between *differing*
Cell Identity kinds. For example, if a cell as CGI 23-42-3-5, and a HO for
LAC-CI 3-5 should be handled, we need to see the match.
This is most interesting for osmo-msc, i.e. to direct the BSSMAP Handover
Request towards the correct BSC or MSC.
It is also interesting for osmo-bsc's VTY interface, to be able to manage
cells' neighbors and to trigger manual handovers by various Cell Identity
handles, as the user would expect them.
Change-Id: I5535f0d149c2173294538df75764dd181b023312
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gcc-8.2 is printing the following warning, which is an error
when used -Werror like our --enable-werror:
In file included from gprs_bssgp.c:34:
In function ‘tl16v_put’,
inlined from ‘tvlv_put.part.3’ at ../../include/osmocom/gsm/tlv.h:156:9,
inlined from ‘tvlv_put’ at ../../include/osmocom/gsm/tlv.h:147:24,
inlined from ‘msgb_tvlv_push’ at ../../include/osmocom/gsm/tlv.h:386:2,
inlined from ‘bssgp_tx_dl_ud’ at gprs_bssgp.c:1162:4:
../../include/osmocom/gsm/tlv.h:131:2: error: ‘memcpy’ forming offset [12, 130] is out of the bounds [0, 11] of object ‘mi’ with type ‘uint8_t[11]’ {aka ‘unsigned char[11]’} [-Werror=array-bounds]
memcpy(buf, val, len);
Where "130" seems to be the maximum value of uint8_t, shifted right one +
2. But even as we use strnlen() with "16" as maximum upper bound, gcc
still believes there's a way that the return value of gsm48_generate_mid_from_imsi()
could be 130. In fact, even the newly-added OSMO_ASSERT() inside
gsm48_generate_mid() doesn't help and gcc still insists there is a problem :(
Change-Id: I0a06daa19b7b5b5badbb8b3d81a54c45b88a60ec
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The longest BCd-digit type identity is the IMEISV with 16, so there's
no point in trying to parse up to 255 decimal digits, which will do
nothing but to overflow the caller-provided output buffer.
Let's also clearly define the required minimum size of the output
buffer and add a reltead #define for it.
Change-Id: Ic8488bc7f77dc9182e372741b88f0f06100dddc9
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Change-Id: I51696a3ace219ab69c294b0e3637371c5460291f
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This resolves an issue introduced in 84fb5bb6a09a6a358f98c654c84c3b99a0f24eef
when msgb_wrap_with_TL() was introduced as an inline function with
*exactly the same name* as in osmo-msc.git and openbsc.git. We *NEVER*
do something like this. Functions moved from applications to library
*MUST* always be renamed. This has been the case for almost a decade
now.
With this subsequent change we make sure the libosmocore function
has a different name and doesn't clash. After this commit, old
openbsc.git and osmo-bsc.git should again build fine.
Change-Id: If1e851ac605c8d2fde3da565b0bd674ea6350c2e
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Change-Id: I1bd973754b1ebc42283f6a07defa60f58523f5a3
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