HO: Add a penalty timer list to the subscriber connection entity

This penalty timer is used to temporarily block cells where handover
or assignment failed or where handover is not allowed. This is usefull
to prevent repeated handover attempts to broken cells or cells that have
limited allowed distance.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/libbsc/bsc_api.c b/src/libbsc/bsc_api.c
index 045068f24..8ac822e93 100644
--- a/src/libbsc/bsc_api.c
+++ b/src/libbsc/bsc_api.c
@@ -249,6 +249,7 @@ struct gsm_subscriber_connection *subscr_con_allocate(struct gsm_lchan *lchan)
 	conn->lchan = lchan;
 	conn->bts = lchan->ts->trx->bts;
 	lchan->conn = conn;
+	INIT_LLIST_HEAD(&conn->ho_penalty_timers);
 	llist_add_tail(&conn->entry, &sub_connections);
 	return conn;
 }
@@ -256,6 +257,8 @@ struct gsm_subscriber_connection *subscr_con_allocate(struct gsm_lchan *lchan)
 /* TODO: move subscriber put here... */
 void subscr_con_free(struct gsm_subscriber_connection *conn)
 {
+	struct ho_penalty_timer *penalty;
+
 	if (!conn)
 		return;
 
@@ -281,6 +284,14 @@ void subscr_con_free(struct gsm_subscriber_connection *conn)
 		conn->secondary_lchan->conn = NULL;
 	}
 
+	/* flush handover penalty timers */
+	while (!llist_empty(&conn->ho_penalty_timers)) {
+		penalty = llist_entry(conn->ho_penalty_timers.next,
+			struct ho_penalty_timer, entry);
+		llist_del(&penalty->entry);
+		talloc_free(penalty);
+	}
+
 	llist_del(&conn->entry);
 	talloc_free(conn);
 }