[B.A.T.M.A.N.] [RFC 21/23] batman-adv: B.A.T.M.A.N. V - implement neigh_is_equiv_or_better API

[Antonio Quartulli <antonio@meshcoding.com>]

From: Antonio Quartulli <antonio@open-mesh.com>

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
---
 bat_v.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/bat_v.c b/bat_v.c
index 3e4575d..70ff9e9 100644
--- a/bat_v.c
+++ b/bat_v.c
@@ -21,6 +21,7 @@
 #include "bat_algo.h"
 #include "bat_v_elp.h"
 #include "bat_v_ogm.h"
+#include "originator.h"
 
 static int batadv_v_iface_enable(struct batadv_hard_iface *hard_iface)
 {
@@ -63,6 +64,23 @@ static void batadv_v_ogm_emit(struct batadv_forw_packet *forw_packet)
 {
 }
 
+static bool batadv_v_neigh_is_eob(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;
+	uint32_t threshold;
+
+	ifinfo1 = batadv_neigh_ifinfo_get(neigh1, if_outgoing1);
+	ifinfo2 = batadv_neigh_ifinfo_get(neigh2, if_outgoing2);
+
+	threshold = ifinfo1->bat_v.metric << 8 >> 10;
+	threshold = ifinfo1->bat_v.metric - threshold;
+
+	return ifinfo2->bat_v.metric > threshold;
+}
+
 static void batadv_v_neigh_free(struct batadv_neigh_node *neigh)
 {
 	batadv_elp_neigh_node_free_ref(neigh->bat_v.elp_neigh);
@@ -77,6 +95,7 @@ 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_is_equiv_or_better = batadv_v_neigh_is_eob,
 	.bat_neigh_free = batadv_v_neigh_free,
 };
 
-- 
1.8.5.3