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We always use id = 0 when sending TRAP messages. Let's make this more
obvious by introducing appropriate define.
Change-Id: I33d7d4c6a1885a75a85d6f2f017430e0860b4126
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Callers require to know whether the returned ERROR cmd was received or
generated locally, in order to send it or do something with it locally.
Related: OS#3394
Change-Id: Ide9170e5c31967c353f8fe4e8227e64130b91eae
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Closes: OS#3293
Change-Id: I8dc2f24d4bf557ff7bb0f2f46881f9f8d9d7f86f
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The CTRL interface has a ctrl_cmd_def_* API that allows deferring a CTRL
command reply until later. However, the command handling currently fails to
acknowledge this and deallocates the struct ctrl_cmd anyway.
Fix: in struct ctrl_cmd, add a defer pointer to be populated by
ctrl_cmd_def_make(). A cmd thus marked as deferred is not deallocated at the
end of command handling. This fix needs no change in calling code.
(Another idea was to return a different code than CTRL_CMD_HANDLED when the
command is to be deferred, but that would require adjusting each user of
ctrl_cmd_def_make(). The implicit marking is safer and easier.)
Show that handling deferred commands is fixed by adjusting the expectations of
ctrl_test.c's test_deferred_cmd() and removing the now obsolete exit_early
label.
One symptom of the breakage is that osmo-bts-sysmo crashes when asked to report
a trx's clock-info, which is aggravated by the fact that the sysmobts-mgr does
ask osmo-bts-sysmo for a clock-info.
The crash appears since Id583b413f8b8bd16e5cf92a8a9e8663903646381 -- it looked
like just fixing an obvious memory leak, which it did as shown by the unit
test, but deferred ctrl commands actually relied on that leak. Both fixed now.
Related: OS#3120
Change-Id: I24232be7dcf7be79f4def91ddc8b8f8005b56318
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If a control command fails to parse, we so far discard specific error messages
and instead send just "Command parser error".
In ctrl_cmd_parse() we actually compose detailed error replies, but in the end
simply talloc_free() them and return NULL.
A first step to report these errors to the ctrl command issuer is to not return
NULL and instead return the cmd with type = CTRL_TYPE_ERROR. Add
ctrl_cmd_parse2() to return such instead of NULL.
To stay API compatible, provide ctrl_cmd_parse2() to return a cmd on errors.
ctrl_cmd_parse() retains identical behavior but becomes just a simple wrapper
around ctrl_cmd_parse2() which discards the cmd on error.
No need really to deprecate ctrl_cmd_parse() yet; especially as long as
compiler warnings might break jenkins builds.
Change-Id: I5047c9f977d70b03eea77cbcfd2b96d43ea46880
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Add macro to append to a CTRL commands' reply string, ctrl_cmd_reply_printf().
The talloc_asprintf() part of it is generic enough to qualify for a separate
macro, osmo_talloc_asprintf().
The idea is to not have to decide for each bit added to a string whether the
string is already allocated or not, but simply be able to issue printf commands
and let the macro worry about initial allocation or reallocation.
This originally came from osmo-hlr change
I1bd62ae0d4eefde7e1517db15a2155640a1bab58, where it was requested to move this
bit to libosmocore.
Change-Id: Ic9dba0e4a1eb5a7dc3cee2f181b9024ed4fc7005
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Considering the various styles and implications found in the sources, edit
scores of files to follow the same API doc guidelines around the doxygen
grouping and the \file tag.
Many files now show a short description in the generated API doc that was so
far only available as C comment.
The guidelines and reasoning behind it is documented at
https://osmocom.org/projects/cellular-infrastructure/wiki/Guidelines_for_API_documentation
In some instances, remove file comments and add to the corresponding group
instead, to be shared among several files (e.g. bitvec).
Change-Id: Ifa70e77e90462b5eb2b0457c70fd25275910c72b
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This allows programmatic access to introspection of FSM instances, which
is quite handy from e.g. external test cases: Send a message to the
code, then use the CTRL interface to check if that message has triggered
the right kind of state transition.
Change-Id: I0f80340ee9c61c88962fdd6764a6098a844d0d1e
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Don't use CTRL_TYPE_UNKNOWN as value_string[] terminator, use an explicit, more
obvious { 0, NULL } termination. Set an explicit string for CTRL_TYPE_UNKNOWN.
No other value_string[]s to date have such a "hidden" terminator.
BTW, a { 0, "string" } item is not a terminator, only { 0, NULL } is, so we can
set a string for CTRL_TYPE_UNKNOWN == 0.
Also, having a string value for CTRL_TYPE_UNKNOWN is not harmful because all
code paths explicitly check for the CTRL_TYPE_*s that are valid.
Adjust the test expectation.
From the ctrl_type_vals enum, remove the = 0, because it is implicitly 0
anyway.
One motivation to press this fixup: I am trying to add a script that checks
whether all value_string[]s are terminated to our jenkins jobs, and to find
that this one is terminated, it would need to interpret the CTRL_TYPE_UNKNOWN
constant, which would make things far more complex. At this point, all of the
value_string[]s have an explicit termination, and I would like to enforce this
from now on -- for readable code and to not spend more time on the validator.
The patch adding ctrl_type_vals (Icd4e96dd9f00876cb70b43cfcf42ab4f10311b28) was
accepted by another reviewer before I could reconfirm my -1, so this is a fixup
to enable the termination checking script patches.
Related: I2bc93ab4781487e7685cfb63091a489cd126b1a8 (adds script to libosmocore)
I7fe3678b524d602fc6aa14bc0ed06308df809a3e (uses in jenkins.sh)
Icd4e96dd9f00876cb70b43cfcf42ab4f10311b28 (adds ctrl_type_vals)
Change-Id: Ia99f37464c7b36b587da2cc78f52c82725f02cbc
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Use value_string for enum ctrl_type instead of custom code. Add
corresponding unit tests.
Related: OS#1615
Change-Id: Icd4e96dd9f00876cb70b43cfcf42ab4f10311b28
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Similar to CTRL_CMD_DEFINE_RO() add helper for control commands which
are not meant to be read, only to set. Similarly, add
CTRL_CMD_DEFINE_WO_NOVRF() for commands which do not perform inbound
data verification.
Change-Id: I66b7990db590c1f8e56326e392e6c1d2eafebd9a
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This reverts commit ed9d6da5df98538adc70aa03cb569eb9505d04b6.
The commit is good as such, but it causes many compiler warnings in the OpenBSC
build. We want this to be re-applied as soon as we have patches ready that fix
the fallout in openbsc.git.
See also https://lists.osmocom.org/pipermail/openbsc/2016-October/009802.html
Related: OS#1829
Change-Id: I722ad60232a6ef5b4cb984b92c42851de26b3ccd
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Change-Id: I3f55c1d4b965d215dc9b16f4b284b7fea4bde9e9
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Sometimes a control interface command cannot be processed
and responded immediately, but we need to process it asynchronously.
In order to support this, we introduce the 'ctrl_cmd_def', which
represents such a deferred command. It is created by the service
implementing the command using ctrl_cmd_def_make(), and a response is
later sent using ctrl_cmd_def_send().
ctrl_cmd_def_is_zombie() must be called to handle the case where
the control connection has disconnected/died between receiving the
command and sending the response.
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... and rather introduce a general osmo_talloc_replace_string() to
libosmocore.
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