[B.A.T.M.A.N.] [RFC 22/23] batman-adv: B.A.T.M.A.N. V - implement bat_neigh_cmp API

[Antonio Quartulli]

Signed-off-by: Antonio Quartulli <anto...@meshcoding.com>
---
 bat_v.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/bat_v.c b/bat_v.c
index 70ff9e9..d05d548 100644
--- a/bat_v.c
+++ b/bat_v.c
@@ -64,6 +64,23 @@ static void batadv_v_ogm_emit(struct batadv_forw_packet 
*forw_packet)
 {
 }
 
+static int batadv_v_neigh_cmp(struct batadv_neigh_node *neigh1,
+                             struct batadv_hard_iface *if_outgoing1,
+                             struct batadv_neigh_node *neigh2,
+                             struct batadv_hard_iface *if_outgoing2)
+{
+       struct batadv_neigh_ifinfo *ifinfo1, *ifinfo2;
+
+       ifinfo1 = batadv_neigh_ifinfo_get(neigh1, if_outgoing1);
+       ifinfo2 = batadv_neigh_ifinfo_get(neigh2, if_outgoing2);
+
+       if (WARN_ON(!ifinfo1 || !ifinfo2))
+               return 0;
+
+       return ifinfo1->bat_v.metric - ifinfo2->bat_v.metric;
+
+}
+
 static bool batadv_v_neigh_is_eob(struct batadv_neigh_node *neigh1,
                                  struct batadv_hard_iface *if_outgoing1,
                                  struct batadv_neigh_node *neigh2,
@@ -95,6 +112,7 @@ static struct batadv_algo_ops batadv_batman_v __read_mostly 
= {
        .bat_primary_iface_set = batadv_v_primary_iface_set,
        .bat_ogm_emit = batadv_v_ogm_emit,
        .bat_ogm_schedule = batadv_v_ogm_schedule,
+       .bat_neigh_cmp = batadv_v_neigh_cmp,
        .bat_neigh_is_equiv_or_better = batadv_v_neigh_is_eob,
        .bat_neigh_free = batadv_v_neigh_free,
 };
-- 
1.8.5.3