batman-adv: implement AP-isolation on the receiver side

When a node receives a unicast packet it checks if the source and the
destination client can communicate or not due to the AP isolation

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>

1 files changed, 4 insertions, 0 deletions

diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
index 6deed44a3703..9addbab52999 100644
--- a/net/batman-adv/soft-interface.c
+++ b/net/batman-adv/soft-interface.c
@@ -739,6 +739,9 @@ void interface_rx(struct net_device *soft_iface,
 
         soft_iface->last_rx = jiffies;
 
+        if (is_ap_isolated(bat_priv, ethhdr->h_source, ethhdr->h_dest))
+                goto dropped;
+
         netif_rx(skb);
         goto out;
 
@@ -812,6 +815,7 @@ struct net_device *softif_create(const char *name)
 
         atomic_set(&bat_priv->aggregated_ogms, 1);
         atomic_set(&bat_priv->bonding, 0);
+        atomic_set(&bat_priv->ap_isolation, 0);
         atomic_set(&bat_priv->vis_mode, VIS_TYPE_CLIENT_UPDATE);
         atomic_set(&bat_priv->gw_mode, GW_MODE_OFF);
         atomic_set(&bat_priv->gw_sel_class, 20);