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.

Change-Id: I95cb7e3211b2470b773965e7aa94d8eb6c8c1a3a

1 files changed, 10 insertions, 0 deletions

diff --git a/src/libbsc/bsc_api.c b/src/libbsc/bsc_api.c
index 9c60af9c0..27bf739d1 100644
--- a/src/libbsc/bsc_api.c
+++ b/src/libbsc/bsc_api.c
@@ -277,6 +277,7 @@ struct gsm_subscriber_connection *bsc_subscr_con_allocate(struct gsm_lchan *lcha
 	conn->bts = lchan->ts->trx->bts;
 	lchan->conn = conn;
 	INIT_LLIST_HEAD(&conn->ho_dtap_cache);
+	INIT_LLIST_HEAD(&conn->ho_penalty_timers);
 	llist_add_tail(&conn->entry, &net->subscr_conns);
 	return conn;
 }
@@ -326,6 +327,8 @@ static void ho_dtap_cache_flush(struct gsm_subscriber_connection *conn, int send
 
 void bsc_subscr_con_free(struct gsm_subscriber_connection *conn)
 {
+	struct ho_penalty_timer *penalty;
+
 	if (!conn)
 		return;
 
@@ -350,6 +353,13 @@ void bsc_subscr_con_free(struct gsm_subscriber_connection *conn)
 	/* drop pending messages */
 	ho_dtap_cache_flush(conn, 0);
 
+	/* flush handover penalty timers */
+	while ((penalty = llist_first_entry_or_null(&conn->ho_penalty_timers,
+						    struct ho_penalty_timer, entry))) {
+		llist_del(&penalty->entry);
+		talloc_free(penalty);
+	}
+
 	llist_del(&conn->entry);
 	talloc_free(conn);
 }