Currently the handling of the buffers is not done consistently. Some
code assumes that the whole buffer may be used to store the string
while at other places, the last buffer byte is left untouched in the
assumption that it contains a terminating NUL-character. The latter
is the correct behaviour.
This commit changes to code to not touch the last byte in the buffers
and to rely on the last byte being NUL. So the maximum IMSI/IMEI
length is GSM_IMSI_LENGTH-1/GSM_IMEI_LENGTH-1.
For information: We assume that we allocate the structure with
talloc_zero. This means we have NULed the entire imsi array and then
only write sizeof - 1 characters to it. So the last byte remains NUL.
Fixes: Coverity CID 1206568, 1206567
Sponsored-by: On-Waves ehf
Create a control command to read and modify the gprs mode. Use
the get_string_value to indicate if the value was found or not.
This is useful for the ctrl interface where I didn't want to
replicate "none", "gprs" and "egprs". Share code to verify that
a BTS supports the mode.
Related: SYS#591
30f1f37638 introduced new channel
combinations but had a copy and paste error in the description.
The jenkins system didn't run the external tests so this issue
and others were not noticed until now.
Fix the copy and paste and update the test result.
Move the "logging filter imsi IMSI" into the BTS/NITB code to
allow to set the gsm_subscriber and only compare it. This way
we simply compare the subscriber address and don't have to care
if the subscriber data is still valid.
We can now configure the pyisical channel types for CBCH either in the
CCCH+SDCCH4 or in the SDCCH8 chanel combination.
Depending on whether a CBCH exists on the BTS, we also generate the SI4
with matching CBCH channel description to notify the phones of the
existance of the CBCH.
There is now a VTY command how a SMS-CB message can be sent to a given
BTS.
We do not yet have any logic at all for actual scheduling of multiple
CBCH RSL messages towards one or multiple BTSs yet, though.
In case a BTS is dropped, iterate over the list of BTS and check
if a dependency is now missing and then drop the BTS. This check
could lead to check of 256*256 checks (e.g. all BTS on each other
in the chain and the master is being dropped). The performance
aspect of it doesn't matter for our usecase. We expect to have
pairs of BTS right now.
E.g. for the sysmoBTS2050 we have the requirement that the first
board connects before the second due clocking. The easiest point
to enforce this is the BSC. Add a simple bitmask based system to
allow to express dependencies for IP based systems.
Currently the keep_subscr flag in gsm_subscriber_group refers to a
whole group of subscribers which makes it difficult to really delete
single entries if the flag is set.
This patch adds a keep_in_ram field to gsm_subscriber which allows for
keeping subscriber objects in RAM while deleting others.
Note that really deleting an entry requires that both flags
(subscr_group->keep_subscr and subscr->keep_in_ram) are set to 0. So
only the latter should be used if a specification requires the
deletion of a subscriber entry.
Sponsored-by: On-Waves ehf
Currently every subcriber object directly refers to the gsm_network
which contains a flag shared by every related subscriber
(keep_subscr). This adds a dependency on gsm_network even if only the
function defined in gsm_subscriber_base.c are used.
This patch adds a new struct gsm_subscriber_group which contains the
keep_subscr flag and a back reference to the network object. The
latter is not dereferenced in gsm_subscriber_base.c, so it can safely
be set to NULL when only that part of the gsm_subscriber API is being
used. It also changes that API to use gsm_subscriber_group instead of
gsm_network parameters.
Since there are some places where a pointer to the gsm_network is
needed but where only a gsm_subscriber is available, a 'net' back
pointer is added to the group struct, too. Nevertheless subscr group
and network could be separated completely, but this is not the topic
of this commit.
Sponsored-by: On-Waves ehf
Since it is planned to use struct gsm_subscriber to manage subscriber
data in the SGSN, this file which contains the generic subscriber
related methods is moved to libcommon.
Sponsored-by: On-Waves ehf
Currently libcommon depends on libbsc, because gsm_network_init
(libcommon/gsm_data.c) directly calls gsm_net_update_ctype
(libbsc/gsm_04_08_utils.c).
This patch moves gsm_network_init to a new file libbsc/net_init.c.
Sponsored-by: On-Waves ehf
Remove ournode_exit_cmd, ournode_end_cmd, and bsc_install_default()
since this functionality is provided by the current libosmocore.
Replace calls to bsc_install_default() by call to
vty_install_default() with the following semantic patch:
@rule1@
expression N;
@@
- bsc_install_default(N);
+ vty_install_default(N);
Ticket: OW#952
Sponsored-by: On-Waves ehf
Add bsc_install_default() and replace all install_default()
This patch adds bsc_install_default() which calls install_default()
and add 'exit' and 'end'. All other calls to install_default() are
replaced by calls to bsc_install_default().
Since 'exit' and 'end' are now added automatically to each node, the
explicit registrations of these commands are removed by this patch,
too.
The related tests succeed now without work-arounds (except for the
'config' node itself which is part of libosmocore).
ournode_exit() duplicates most of bsc_vty_go_parent(). This patch
fixes the inconsistencies of both functions within
bsc_vty_go_parent() and replaces the implementation of
ournode_exit() by a call to it. This makes 'exit' behave exactly
like ^D in all openbsc nodes.
ournode_end() has been changed to walk through the intermediate
nodes until one of the top nodes is reached. This allows for
cleanups to be done on the way.
Note that in config mode if the tree is searched along the nodes
toward the config node and a command is not found this way, a
rollback is done by just replacing the vty's node and index member
variable by the saved old values which might break the whole thing, when
there has been a free() on the way.
It appears to me that for NM_OC_BS11 mo was either NULL or the
one mo value from NM_OC_BS11_RACK. The break inside the nested
switch case didn't break from the outer one.
Fixes Coverity: CID 1040728
The support has been implemented for an old model, we were told that
newer versions would be made incompatible with OpenBSC. Ther are
various warnings in the code and coverity has found some new ones.
Just remove the code as we don't know of anyone using this code.
The sysmobts is now having a SAPI queue with all pending SAPI operations
on the BTS. Add the llist_head to the lchan and make sure it is initialized
by the shared code.
The message was corrupt at several points. They are fixed now and
successfully tested.
A default T3122 timer value of 10 is defined by default now. If set to 0,
the reject message will not be sent. Note that when using existing configs
with T3122 value set to 0.
For short IP failures we want the RF to stay up and wait for
the re-connect but in case the A-link is gone too long it is
good to switch off the RF and wait for commands to enable it
again.
libcommon: Default to 30min location update period
libbsc: Limit VTY value for periodic update and disallow the value 0
According to GSM 04.08 Table 10.5.33 "The value 0 is used for infinite
timeout value i.e. periodic updating shall not be used within the cell."
This was the default value until now, but the code that deals with
expiring inactive subscribers in the next commit can't handle that case
so this remains a TODO for now.
If the CHAN ACTIV is NACKED we set the state backto NONE. This is
problematic as our channel allocator will allocate from the front
or from the back and if the channel is early in the list it might
cause permanent failures. Introduce a BROKEN state and use it when
the channel activation is failing for an unknown reason. Copy the
cause so it can be inspected later.
In order to keep mobile at PACCH as long as possible the timer T3192 is
set to 1500ms. This reduces the probablity of long lasting assignment
process on CCCH for subsequent downlink TBFs.
gcc does not really know the _NR_OF_ELEMENTS_IN_ENUM approach, add
the _NUM_GSM_BTS_TYPE to the handled cases.
gsm_data.c: In function ‘gsm_set_bts_type’:
gsm_data.c:349:2: warning: enumeration value ‘_NUM_GSM_BTS_TYPE’ not handled in switch [-Wswitch]
so far, osmo-bts/sysmobts used to be entered as "sysmobts" type in the
configuration file. However, there are some differences in the
protocol/behaviour and we should reflect that by a new BTS plugin (with
lots of code reuse from the nanobts driver).
Holger Hans Peter Freyther
Harald Welte
Alexander Huemer