batman-adv: add bat_neigh_cmp API function

This new API allows to compare the two neighbours based on
the metric avoiding the user to deal with any routing
algorithm specific detail

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index 3159a148c1ac..1f2f1ac67a4c 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -501,7 +501,8 @@ int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops)
             !bat_algo_ops->bat_iface_update_mac ||
             !bat_algo_ops->bat_primary_iface_set ||
             !bat_algo_ops->bat_ogm_schedule ||
-            !bat_algo_ops->bat_ogm_emit) {
+            !bat_algo_ops->bat_ogm_emit ||
+            !bat_algo_ops->bat_neigh_cmp) {
                 pr_info("Routing algo '%s' does not implement required ops\n",
                         bat_algo_ops->name);
                 ret = -EINVAL;