path: root/include/osmocom/msc/transaction.h
diff options
authorVadim Yanitskiy <axilirator@gmail.com>2018-11-28 23:05:51 +0700
committerVadim Yanitskiy <axilirator@gmail.com>2019-02-20 03:22:38 +0700
commit64623e18484d52a9d6eb5f0fa7166c78d8605422 (patch)
tree7ceb383dc0d1f0e29e1f8e0de0c3d1bfefad3bad /include/osmocom/msc/transaction.h
parent390d140b568ef8d776e5d7376168ba35b4f444a0 (diff)
libmsc/gsm_09_11.c: implement guard timer for NCSS sessions
It may happen that either the MS or an EUSE would become unresponsive during a call independent SS session, e.g. due to a bug, or a dropped message. In such cases, the corresponding transaction would remain unfreed forever. This change introduces a guard timer, that prevents keeping 'stalled' NCSS sessions forever. As soon as it expires, both sides (i.e. MS and EUSE) are getting notified, and the transaction is being released. By default, the timer expires after 30 seconds. As soon as either the MS, or an EUSE initiates any activity, the watchdog timer is rescheduled. The timeout value can be configured from the VTY: msc ... ! Use 0 to disable this timer ncss guard-timeout 30 Please note that changing the timeout value at run-time doesn't affect the existing NCSS sessions, excepting the case when the timer is disabled at run-time. This change makes TC_lu_and_ss_session_timeout pass. Change-Id: Icf4d87c45e90324764073e8230e0fb9cb96dd9cb Related Change-Id: (TTCN) I3e1791773d56617172ae27a46889a1ae4d400e2f Related: OS#3655
Diffstat (limited to 'include/osmocom/msc/transaction.h')
1 files changed, 2 insertions, 0 deletions
diff --git a/include/osmocom/msc/transaction.h b/include/osmocom/msc/transaction.h
index 39b09aeaa..830328bca 100644
--- a/include/osmocom/msc/transaction.h
+++ b/include/osmocom/msc/transaction.h
@@ -87,6 +87,8 @@ struct gsm_trans {
* a subscriber after successful Paging Response
struct msgb *msg;
+ /* Inactivity timer, triggers transaction release */
+ struct osmo_timer_list timer_guard;
} ss;