subscr: Introduce subscr_purge_inactive to free unused subscribers
Introduce a method that will remove all subscribers that have a
zero use count. This is useful if someone wants to purge subscribers
from memory or wants to disable the everything in RAM feature.
diff --git a/openbsc/src/gsm_subscriber_base.c b/openbsc/src/gsm_subscriber_base.c
index e3a04f3..8872a9a 100644
--- a/openbsc/src/gsm_subscriber_base.c
+++ b/openbsc/src/gsm_subscriber_base.c
@@ -133,3 +133,18 @@
return NULL;
}
+
+int subscr_purge_inactive(struct gsm_network *net)
+{
+ struct gsm_subscriber *subscr, *tmp;
+ int purged = 0;
+
+ llist_for_each_entry_safe(subscr, tmp, subscr_bsc_active_subscriber(), entry) {
+ if (subscr->net == net && subscr->use_count <= 0) {
+ subscr_free(subscr);
+ purged += 1;
+ }
+ }
+
+ return purged;
+}