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In case the subscriber is currently busy we would omit the
subscr_put. This seems to be very hard to hit as the subscr
need to be active and at the same time be selected for the
purge operation.
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So in case somebody is starting paging from within a paging
expired callback we would dispatch the paging request right
away with the same failure.
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The idea of "subscriber_get_channel" was that different
requests would be coordinated. At the same time we have
seen that the "queue" can get stuck at both 31C3 and the
rhizomatica installations.
Voice calls and SMS do not need coordination. We should
be able to send SMS on a voice channel and switch the MS
from a SDCCH to a TCH in case we establish a voice call.
The SMS code itself needs to coordinate to obey the limit
of one SMS per direction but this should be enforced in
the sms layer and not on the subscriber.
Modify the code to have a simple paging coordination. The
subscriber code will schedule the paging and register who
would like to know about success/failure.
This allowed to greatly simplify the paging response
handling for the transaction code (and in fact we could
move the transaction list into the subscriber structure
now). The code gained to support to cancel the notification
of a request (but not the paging itself yet).
TODO: Cancel paging request in case no one cares about it
anymore.
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Over the next commits the queuing of commits will be
completely modified to remove the queue and move the
scheduling/limits to the outer callers.
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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
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The database code should not know about the network. Move the
setting of the network pointer into the subscriber layer.
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Disable the periodic LU using "no periodic location update" VTY
command. In that case set the expire_lu to 0 which will then be
translated to a NULL in the database layer. This leads to a bit of
copy and paste in the db_sync_subscriber method but I don't see
how we could easily use 'datetime(%i, 'unixepoch')' and 'NULL'
at the same time.
Change the query to find expired queries to check for NOT NULL
and the time being in the past. This means if there are still
old subscribers in the database they might not be expired. One
would need to execute a query like "UPATE Subscriber SET expire_lu
= 0 WHERE expire_lu is null". The same applies when disabling the
periodic LU. One would need to update the database by hand.
Manual tests executed/passed:
1.) periodic LU enabled:
* use gst LUTest.st to do a LU
* UPDATE Subscriber SET expire_lu=datetime('now');
* observe the subscriber being expired (it was)
2.) periodic LU disabled:
* use gst LUTest.st to do a LU
* verify that the expire_lu is NULL in the database
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We were expiring subscribers during active calls. This is because
the T3212 is stopped under certain conditions but we didn't stop
that timer at all.
Remember if T3212 timer was stopped due something done by NITB and
update the expiration time at the end of the radio connection, as
the phone should restart it when returning to MM Idle.
It is a bit difficult to decide when we should set the flag. E.g.
in a CM Service Request we don't know if we accept the service and
during a LU we already send MM messages before we accept or reject
the subscriber.
The easiest is to set the flag when receiving a paging response
on known subscribers and at the end of the authentication process.
Do not expire a subscriber that has an active connection that is
marked with the flag, e.g. we would still expire a subscriber that
is being paged.
Manual tests executed/passed:
* gst LUTest.st verified that a expiration date was set
* gst SMSTest.st (doing another LU but forcing a timeout on the
SMS sending). Verified that the expire_lu was updated.
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This fixes both a GCC and a Coverity warning:
GCC:
gsm_subscriber.c: In function ‘subscr_expire_callback’:
gsm_subscriber.c:389:2: warning: format ‘%i’ expects argument of type ‘int’, but argument 8 has type ‘long long unsigned int’ [-Wformat]
Coverity:
CID 1040712
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Set the subscriber expiry timeout to twice the duration of the location
update period and provide functions subscr_expire() and
db_subscriber_expire() to mark subscribers offline that have missed two
location update periods.
This patch increases the DB revision to 3, so the hlr will be
incompatible with prior versions.
We should allow 0 for T3212 as well to disable the location update
period. In that case we will need a way to indicate that in the
database.
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This was requested by Holger Freyther <zecke@selfish.org>.
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Summary of changes:
s/signal_cbfn/osmo_signal_cbfn/g
s/register_signal_handler/osmo_signal_register_handler/g
s/unregister_signal_handler/osmo_signal_unregister_handler/g
s/dispatch_signal/osmo_signal_dispatch/g
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This was done with sed on the files.
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libosmogsm is a new library that is distributed in the libosmocore.
Now, openbsc depends on it. This patch gets openbsc with this
change.
This patch also rewrites all include path to the new
osmocom/[gsm|core]
Signed-off-by: Pablo Neira Ayuso <pablo@gnumonks.org>
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... and make sure tests work again after restructuring
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