path: root/openbsc/tests
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authorJacob Erlbeck <>2015-01-23 11:33:51 +0100
committerHolger Hans Peter Freyther <>2015-01-26 08:51:50 +0100
commit81ffb740f78ccdada8ece786cfab852bc10172e8 (patch)
treeaf356b98d257881ecdb0ef37c885d6f83e0a2b8c /openbsc/tests
parent841d95f86701b9e813402c65a7b1f88d132593fb (diff)
sgsn: Remove inactive LLME/MM after inactivity timeout
Currently old LLMEs and MM contexts that haven't been explicitly detached or cancelled are not removed until another request with the same IMSI is made. These stale entries may accumulate over time and severely compromise the operation of the SGSN. This patch implements age based LLME expiry, when the maximum age has been reached, the corresponding MM context is cancelled. If such an MM context doesn't exist, the LLME is unassigned directly. The implementation works as follows. - llme->age_timestamp is reset on each received PTP LLC message - sgsn_llme_check_cb is invoked periodically (each 30s) - sgsn_llme_check_cb sets the age_timestamp to the current time if it has been reset - sgsn_llme_check_cb computes the age and expires the LLME if it exceeds gprs_max_time_to_idle() Ticket: OW#1364 Sponsored-by: On-Waves ehf [hfreyther: Fix typo in comment LMME -> LLME]
Diffstat (limited to 'openbsc/tests')
1 files changed, 1 insertions, 1 deletions
diff --git a/openbsc/tests/sgsn/ b/openbsc/tests/sgsn/
index c1b5fbda4..693cf792a 100644
--- a/openbsc/tests/sgsn/
+++ b/openbsc/tests/sgsn/
@@ -32,5 +32,5 @@ sgsn_test_LDADD = \
- -lgtp
+ -lgtp -lrt