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http://cgit.osmocom.org/openbsc/commit/?id=cf8cc2289bf343ca07bd2de58066acf569f932b2
commit cf8cc2289bf343ca07bd2de58066acf569f932b2
Author: Holger Hans Peter Freyther <holger at moiji-mobile.com>
Date: Tue Jan 20 21:14:03 2015 +0100
sgsn: Remove the "permanent" subscriber cache
The subscriber cache would help in case:
* GPRS DETACH, GPRS ATTACH. In that case we might still
have some cached authentication tuples we avoid another
sendAuthenticationInfo request.
* After a detach the cache expiry would make sure to
eventually send a purgeMS to the HLR (which might be
ignored).
At the same time to make the cache work we will need to
make sure to start and stop timers. In case we don't
start we might accumulate subscribers. I am afraid that
the above two benefits do not outweight the complexity
of this implementation.
Modify sgsn_mm_ctx_free to remove the entry from the
list as otherwise we might double free the context from
within gprs_subscriber_delete.
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The OpenBSC GSM Base Station Controller (+MSC/HLR/SGSN)